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Connecticut Surficial Aquifer Potential
SDE Feature Class - depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL
FGDC, ESRI Metadata
DescriptionGraphicSpatialData StructureData QualityData SourceData DistributionMetadata
+ Resource Description
Citation
Information used to reference the data.
Title: Connecticut Surficial Aquifer Potential
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (data compiler, editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 200803
Data type: vector digital data
Description
A characterization of the data, including its intended use and limitations.
Abstract:
The Surficial Aquifer Potential Map of Connecticut is a 1:125,000 scale analysis, identifying areas considered to have the greatest potential for ground water yield. This map has been prepared for statewide ground water resource protection, water management, non-point source pollution prevention, and land use planning. The map was compiled from a geospatial analysis of the surficial materials and thickness of glacial sediments digital data layers of the Surficial Materials Map of Connecticut, Stone and others (1992) and Quaternary Geologic Map of Connecticut and The Long Island Sound Basin, Stone and others (1998, 2005).  The map identifies areas with greater potential for ground water development based upon the texture and thickness of surficial aquifer deposits. The resulting hydrostratigraphic units define areas of coarse grained deposits, coarse overlying fine grained deposits, fine grained deposits, and areas where fine grained deposits overly coarse grained deposits.  Aquifer deposit thickness intervals are 1-50 feet, 50-100 feet, 100-200 feet, 200-300 feet, and 300-400 feet. 
Purpose:
The Surficial Aquifer Potential Map was prepared by the Connecticut Geological Survey at the request of the Water Protection and Land Reuse Bureau of the Department of Environmental Protection. A statewide view of surficial aquifer resources is necessary to facilitate proactive aquifer protection and water supply planning. Previous statewide groundwater availability (Meade 1978) and ground water yields mapping (Mazzaferro 1986) provided excellent planning documents at the time of publication. The compilation presented here incorporates geologic mapping and interpretations of Stone et al (1992; 1998; 2005) unavailable in the earlier treatments. Notably, the Surficial Materials Map of Connecticut (Stone et al 1992), used in this compilation, provides detailed 1:24,000 scale mapping which delineates larger and more numerous areas of coarse-grained deposits than previously known. 
Supplemental information:
Connecticut citizens rely on a readily available water supply, derived from both surface and ground water sources. Ground water occurs in the pore spaces of unconsolidated materials overlying the bedrock, and within bedrock fracture systems. Any geologic formations (sediment or rock) capable of yielding a sufficient quantity of ground water to wells are called aquifers. 

The amount of ground water available from an aquifer depends on many factors, including: the physical properties of the aquifer (how permeable and well-connected the pore spaces or fractures are), the size and composition of the watershed, climate, connection to surface water bodies, the amount of runoff due to impervious surfaces, and other water uses in the basin. In general, coarse-grained surficial aquifers (unconsolidated sediments overlying bedrock) have more, better connected pore spaces and are more productive than bedrock aquifers.

Surface water reservoirs and surficial aquifers serve most of Connecticut's urban areas.   Bedrock aquifers have smaller to more moderate yields, but are also an important source of ground water, particularly in the upland areas of Eastern and Western Connecticut, away from urban population centers. 

The Surficial Aquifer Potential Map delineates areas considered to have the greatest potential for ground water yield. The thicker and coarser-grained deposits have higher potential for water supply development. The most productive surficial aquifers in Connecticut are sand and gravel deposits originating from glacial meltwaters. These deposits are mapped where they occur at the surface and where they occur beneath fine- grained deposits.  The map shows total estimated surficial deposit thickness. This includes the combined thickness of fine and coarse-grained portions of the surficial aquifer for units designated as such. Other glacial meltwater deposits are shown on the map to display the full extent of the surficial aquifers, but these fine-grained deposits have significantly lower potential yields. The white areas of the map are areas of till and shallow rock. Till is generally a thin, very poorly sorted glacial deposit with low potential yields. Potential bedrock yields were not included in this compilation.

The surficial aquifer potential areas are mapped based upon their geologic features, without regard to possible natural or man-made water quality issues that may exist. For example, coastal and estuarine aquifers may have naturally impaired water quality due to unacceptable levels of salinity. In some urbanized or industrialized areas, chemical contamination may impair ground water quality. Water quality was not considered in constructing this map, but would be critical in determining if the potential aquifer is viable as a water supply.

DISCUSSION
Coarse-grained glacial deposits have the greatest potential to both store and transmit water. The locations and thickness of these aquifers are of utmost importance for water management. Coarse-grained deposits of thicknesses greater than 50' are considered to have the greatest long term potential ground water yields, particularly where they occur near large rivers and streams. Where coarse-grained deposits have a water saturated thickness of 10' or greater, moderate to very large ground water yields of 50-2000 gallons per minute have been documented. The saturated thickness of these deposits has not been mapped statewide. Therefore, the overall thickness of these deposits may be used as a proxy for saturated thickness in that, given equal recharge, a greater coarse grained deposit thickness would have a higher potential of containing a greater volume of saturated material. 

Detailed mapping of the surficial materials thickness at 1:24,000 scale is available for only 15% of the State. A wealth of historic hydrogeologic data is available for major watersheds of the State from the USGS Water Resources Bulletins (1968-1975). Generalized thickness estimates for coarse-grained deposits were assigned by geologic region for volume calculations conducted at 1:250,000 scale by DiGiacomo-Cohen and Quarrier (1992). Nevertheless, the most useful statewide compilation of surficial materials thickness became available recently as an element of the Quaternary Geologic Map of Connecticut and Long Island Sound Basin (Stone et al, 1998; 2005). 

The compilation of surficial aquifer potential presented here is suitable for statewide and regional environmental planning, however there are several mapping enhancements that may be explored. These include evaluation of additional sources of information relative to potential yields and saturated thickness of surficial aquifers. Additional work regarding the nature and impact of bedrock fractures relative to regional ground water flow may reveal a systematic effect on the quantity of available ground water to surficial aquifers. Additional work toward detailed surficial thickness estimates would refine current surficial aquifer potential mapping units. Also, consideration of known water quality threats of both natural and man-made origins would further support assessments of potential surficial aquifer use for water supply.
Dataset credit:
Margaret Thomas of the Connecticut Geological and Natural History Survey, Department of Environmental Protection in consultation with Janet Stone, U.S. Geological Survey for Surficial Aquifer Textures and Textural Groups used in the development of this map. Corinne Fitting, of CT DEP Aquifer Protection Program, provided comments on the map. This project was supported by the DEP Nonpoint Source Management Program, through the Federal Clean Water Act Section 319 administered by the U.S. Environmental Protection Agency. 
Language of dataset: en
Point Of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Organization: State of Connecticut, Department of Environmental Protection
Person: Margaret Thomas
Position: State Geologist
Phone: 860-424-3583
Email: margaret.thomas@ct.gov
Hours of service: Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: CT
Postal code: 06106
Country: USA
Data Type
How the data are represented, formatted and maintained by the data producing organization.
File or table name: depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL
Data type: vector digital data
Data format: SDE Feature Class
Native dataset environment: Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.6.1500
Time Period of Data
Time period(s) for which the data corresponds to the currentness reference.
Date: 1992
Currentness reference:
Publication date of 1:125,000 scale Surficial Materials Map of Connecticut, Stone and others, 1992
Status
The state of and maintenance information for the data.
Data status: Complete
Update frequency: None planned
Key Words
Words or phrases that summarize certain aspects of the data.
Theme:
Keywords: aquifer, surficial geology, geology, glacial, unconsolidated materials, stratified drift, Quaternary
Keyword thesaurus: none
Theme:
Keywords: geoscientificInformation
Keyword thesaurus: ISO 19115 Topic Category
Place:
Keywords: Connecticut, CT
Keyword thesaurus: U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.
Place:
Keywords: United States of America, USA
Keyword thesaurus: U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
Stratum:
Keywords: glacial, Quaternary, Aquifer
Data Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
All information compiled for this map is available as digital data from the Connecticut Department of Environmental Protection. http://ct.gov/deep
Use constraints:
The Surficial Aquifer Potential Map of Connecticut is suitable for regional and statewide water resource planning at 1:125,000 scale, and may be a useful tool for water resource classification relative to potential ground water availability. A surficial aquifer texture map was prepared as an intermediate product of the surficial aquifer potential map compilation. As a reclassification of the original mapping of Stone and others (1992), the aquifer texture map is suitable for use at the original data compilation scale of 1:24,000.
Cross Reference
Information about other, related data sets that are likely to be of interest.
Title: Connecticut Surficial Aquifer Texture
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (data source compiler, editor, and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 20090114
Data type: vector digital data
Data location: http://www.ct.gov/deep
Other citation details:
Connecticut Surficial Aquifer Texture is a derivative data product of the 1:24,000-scale Connecticut Surficial Materials data. Connecticut Surficial Materials was digitized from 1:24,000-scale compilation sheets used to prepare and publish a 1:125,000-scale statewide map, Surficial Materials Map of Connecticut, Stone and Others, 1992.
Development of the Surficial Aquifer Texture Map was supported by the Connecticut Department of Environmental Protection  Nonpoint Source Management Program, through Section 319 of the Federal Clean Water Act, administered by the US Environmental Protection Agency.
Larger Work Citation
Title: Surficial Materials Map of Connecticut
Originators: Janet Radway Stone, U.S. Geological Survey
John P. Schafer, U.S. Geological Survey
Elizabeth Haley London, U.S. Geological Survey
Woodrow B. Thompson, U.S. Geological Survey
Series name: U.S. Geological Survey special map, 2 sheets
Series identification: None
Publisher: U.S. Department of the Interior, U.S. Geological Survey
Publication place: Reston, Virginia, USA
Publication date: 1992
Data type: map
Other citation details:
The Surficial Materials Map of Connecticut is published by the U.S. Geological Suvey in cooperation with the State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey. The map is available for purchase from the Connecticut DEP Store or U.S. Geological Survey. Scale 1:125,000.
+ Graphic Example
Browse Graphic
Graphic illustration of the data.
Browse graphic 1
Open - Full view of Connecticut Surficial Aquifer Potential
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Open - Detail view of Connecticut Surficial Aquifer Potential at 1:50,000 scale.
Graphic Image
+ Spatial Reference Information
Horizontal Coordinate System
Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.
Projected coordinate system:
Name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet
Map units: survey feet
Geographic coordinate system:
Name: GCS North American 1983
Coordinate System Details
Map projection
Map projection name: Lambert Conformal Conic
Standard parallel: 41.200000
Standard parallel: 41.866667
Longitude of central meridian: -72.750000
Latitude of projection origin: 40.833333
False easting: 999999.999996
False northing: 499999.999998
Planar Coordinate Information
Planar coordinate encoding method: coordinate pair
Coordinate representation:
Abscissa resolution: 0.000328
Ordinate resolution: 0.000328
Planar distance units: survey feet
Geodetic model
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222
Vertical Coordinate System
Reference system from which vertical distances (altitudes or depths) are measured.
Altitude system definition:
Altitude resolution: 1.000000
Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates
Spatial Domain
The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.
Bounding Coordinates
In Projected or local coordinates
NAD 1983 StatePlane Connecticut FIPS 0600 Feet
BoundaryCoordinate
Left732187.189867 (survey feet)
Right1263083.750119 (survey feet)
Top944191.750046 (survey feet)
Bottom566433.749986 (survey feet)
In Unprojected coordinates (geographic)
GCS North American 1983
BoundaryCoordinate
West-73.736002 (longitude)
East-71.781407 (longitude)
North42.052372 (latitude)
South41.011537 (latitude)
+ Data Structure and Attribute Information
Overview
Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.
Dataset overview:
The Surficial Aquifer Potential Map of Connecticut is a 1:125,000 scale analysis, identifying areas considered to have the greatest potential for ground water yield. This map has been prepared for statewide ground water resource protection, water management, non-point source pollution prevention, and land use planning. The map identifies areas with greater potential for ground water development based upon the texture and thickness of surficial aquifer deposits.
Entity and attribute overview:
Dataset shows the distribution and thickness of coarse-grained glacial sediment deposits in Connecticut. Mapping units include areas of glacial meltwater deposits, with particular value to ground water resources. Coarse-grained deposits are delineated in intervals of 0-50 ft thick; 50-100 ft thick; 100-200 ft thick; 200-300 ft thick; 300-400 ft thick. Fine-grained deposits overlying coarse-grained deposits include areas 0-50 ft thick; 50-100 ft thick; 100-200 ft thick; 200-300 ft thick. Other glacial meltwater deposits with lower potential ground water yield are also delineated.
Entity and attribute detailed citation:
Surficial Aquifer Potential Map of Connecticut, 2008, State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection and U.S. Geological Survey, Department of the Interior, Hartford, CT, vector digital data, compilation scale 1:125,000. http://www.ct.gov/deep
Direct spatial reference method: Vector
Attributes of Connecticut Surficial Aquifer Potential
Detailed descriptions of entity type, attributes, and attribute values for the data.
Name: depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL
Type of object: Feature Class
Geometry type: Polygon
Number of records: 10843
Description:
Surficial Aquifer Potential Map of Connecticut, 2008, State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection and U.S. Geological Survey, Department of the Interior, Hartford, CT, vector digital data, compilation scale 1:125,000. http://www.ct.gov/deep
Source:
State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection and U.S. Geological Survey, Department of the Interior
Attributes
Shape
Definition:
Feature geometry.
Alias: Shape Type: Geometry Width: 4 Precision: 0 Scale: 0
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
SRFAQPOT
Definition:
SRFAQPOT, Surficial Aquifer Potential, field used to delineate areas of coarse-grained glacial meltwater deposits considered to have a favorable potential for ground water yield.
Alias: SRFAQPOT Type: String Width: 50 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
Coarse-Grained Deposits
Areas mapped as having coarse-grained glacial meltwater deposits
Definition Source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
Fines over Coarse-Grained Deposits
Areas mapped as having fine-grained deposits overlying coarse-grained glacial meltwater deposits 
Definition Source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
Other Stratified Drift Deposits
Areas mapped as having glacial meltwater deposits with lower potential ground water yield
Definition Source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
SRFAQTHKFT
Definition:
Surficial Aquifer Thickness in Feet
Alias: SRFAQTHKFT Type: String Width: 50 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
0-50
0 to 50 FT thickness interval
Definition Source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
50-100
50 to 100 FT thickness interval
Definition Source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
100-200
100 to 200 FT thickness interval
Definition Source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
200-300
200 to 300 FT thickness interval
Definition Source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
300-400
300 to 400 FT thickness interval
Definition Source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
Attribute definition source:
State of Connecticut Geological and Natural History Survey, Department of Environmental Protection, and the U.S. Geological Survey, Department of the Interior, and Long Island Sound Resource Center
THICKNS_FT
Definition:
Thickness Interval - Glacial sediment thickness interval, in feet
Alias: THICKNS_FT Type: String Width: 10 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
0-50
0 to 50 FT thickness interval
Definition Source:
compiler
50-100
50 to 100 FT thickness interval
Definition Source:
compiler
100-200
100 to 200 FT thickness interval
Definition Source:
compiler
200-300
200 to 300 FT thickness interval
Definition Source:
compiler
300-400
300 to 400 FT thickness interval
Definition Source:
compiler
400-500
400 to 500 FT thickness interval
Definition Source:
compiler
500-600
500 to 600 FT thickness interval
Definition Source:
compiler
> 600
Greater than 600 FT thick
Definition Source:
compiler
Attribute definition source:
Long Island Sound Resource Center compiler, Mary DiGiacomo-Cohen
TEXTURE
Definition:
Surficial Aquifer Texture - A field used to classify and symbolize surficial material polygon features into categories that describe the texture of surficial aquifers for ground water applications. This attribute condenses the 50 surficial materials map units (SMPOLY_COD values) into 10 textural categories of deposits (artificial fill, beach, coarse, coarse overlying fine, fine, fine overlying coarse, salt marsh, swamp, till and water).
Alias: TEXTURE Type: String Width: 40 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
Artificial Fill
This category includes SMPOLY_COD value of AF.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Beach
This category includes SMPOLY_COD value of B.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Coarse
This category includes SMPOLY_COD values of A/S, A/S/SG, A/SG, A/SG/S, G, G/SG, G/SG/S, G/S, S, S/G, S/SG, SG, SG/S, SG/S/SG, SW/S, SW/S/SG, and SW/SG.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Coarse overlying Fine
This category includes SMPOLY_COD values of A/S/F, A/SG/F, A/SG/S/F, G/F, G/S/F, S/F, SG/F, SG/S/F, SM/S/F, and SW/S/F.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Fine
This category includes SMPOLY_COD values of A/F, F, SM/F and SW/F.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Fine overlying Coarse
This category includes SMPOLY_COD values of A/F/G, A/F/S, A/F/SG, F/G, F/S, F/SG, S/F/SG, SG/F/SG, and SW/F/S.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Salt Marsh
This category includes SMPOLY_COD value SM.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Swamp
This category includes SMPOLY_COD value SW.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Till
This category includes SMPOLY_COD values A, T, TA, TS, and TT.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Water
This category includes SMPOLY_COD value W.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
TEXTUREGRP
Definition:
Surficial Aquifer Texture Group - A field used to classify and symbolize surficial material polygon features into broad textural categories of surficial aquifers for ground water applications. This attribute condenses the 50 surficial materials map units (SMPOLY_COD values) into 5 textural categories of deposits (coarse, coarse overlying fine, fine, fine overlying coarse, and not surficial aquifer).
Alias: TEXTUREGRP Type: String Width: 40 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
Coarse
This category includes SMPOLY_COD values of A/S, A/S/SG, A/SG, A/SG/S, G, G/SG, G/SG/S, G/S, S, S/G, S/SG, SG, SG/S, SG/S/SG, SW/S, SW/S/SG, and SW/SG.
Coarse overlying Fine
This category includes SMPOLY_COD values of A/S/F, A/SG/F, A/SG/S/F, G/F, G/S/F, S/F, SG/F, SG/S/F, SM/S/F, and SW/S/F.
Fine
This category includes SMPOLY_COD values of A/F, F, SM/F and SW/F.
Fine overlying Coarse
This category includes SMPOLY_COD values of A/F/G, A/F/S, A/F/SG, F/G, F/S, F/SG, S/F/SG, SG/F/SG, and SW/F/S.
Not Surficial Aquifer
This category includes SMPOLY_COD values of A, AF, B, SM, SW, T, TA, TS, TT, and W.
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
STRATDRIFT
Definition:
Stratified Drift - Classifies surficial material polygon features into fine and course grain stratified drift deposits. This attribute condenses the 50 surficial materials map units (SMPOLY_COD values) into 3 textural categories of deposits (coarse grain stratified drift, fine grain stratified drift, and not stratified drift).
Alias: STRATDRIFT Type: String Width: 40 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
Coarse Grain Stratified Drift
This category includes SMPOLY_COD values of A/F/G, A/F/S, A/F/SG, A/S, A/S/SG, A/SG, A/SG/S, F/G, F/S, F/SG, G, G/S, G/SG, G/SG/S, S, S/F/SG, S/G, S/SG, SG, SG/F/SG, SG/S, SG/S/SG, SW/F/S, SW/S, SW/S/SG, and SW/SG
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Fine Grain Stratified Drift
This category includes SMPOLY_COD values of A/F, A/S/F, A/SG/F, A/SG/S/F, F, G/F, G/S/F, SG/F, SG/S/F, SM/F, SM/S/F, S/F, SW/F, and SW/S/F.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Not Stratified Drift
This category includes SMPOLY_COD values of A, AF, B, SW, SM, T, TA, TS, TT, and W.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Geological and Natural History Survey, Department of Environmental Protection
SMPOLY_COD
Definition:
SMPOLY_COD 
Alias: SMPOLY_COD Type: String Width: 8 Precision: 0 Scale: 0
Attribute domain values
ValueDefinition
A
Floodplain Alluvium - Sand, gravel, silt, and some organic material, on the floodplains of modern streams. The texture of alluvium commonly varies over short distances both laterally and vertically, and is often similar to the texture of adjacent glacial deposits. Along smaller streams, alluvium is commonly less than 5 ft thick. The most extensive deposit of alluvium on the map is along the Connecticut River where the texture is predominantly fine to very fine sand and silt; here and along other larger rivers, it may be as much as 25 ft thick. Alluvium typically overlies thicker glacial stratified deposits, the general texture of which is indicated by the stacked unit.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/F
Alluvium overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/F/G
Alluvium overlying Fines overlying Gravel
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/F/S
Alluvium overlying Fines overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/F/SG
Alluvium overlying undifferentiated Fine deposits overlying coarse deposits (Sand and Gravel)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/S
Alluvium overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/S/F
Alluvium overlying Sand overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/S/SG
Alluvium overlying Sand overlying Sand and Gravel
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/SG
Alluvium overlying undifferentiated coarse deposits (Sand and Gravel)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/SG/F
Alluvium overlying undifferentiated coarse deposits (Sand and Gravel) overlying Fine deposits
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/SG/S
Alluvium overlying Sand and Gravel overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
A/SG/S/F
Alluvium overlying Sand and Gravel overlying Sand overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
AF
Artificial Fill - Earth materials and manmade materials that have been artificially emplaced. Artificial fill is common throughout the map area but has been shown on this map only where extensive areas of 'made land' occur, principally along the coast.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
B
Beach deposits - Sand and and gravel deposited along the shoreline by waves and currents and by wind action. The texture of beach deposits varies over short distances and is generally controlled by the texture of nearby glacial materials exposed to wave action. Beach deposits are generally well sorted and rarely more than a few feet thick. Many sand beaches along the Connecticut coast have been 'restored'; these have not been distinguished from natural beaches on this map; however, extensive beaches that consist totally of 'made-land' are mapped as artificial fill.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
F
Fines (very fine sand, silt, and clay) - Composed of well-sorted, thin layers of alternating silt and clay, or thicker layers of very fine sand and silt. Very fine sand commonly occurs at the surface and grades downward into rhythmically bedded silt and clay varves (lake-bottom deposits)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
F/G
Fines overlying Gravel
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
F/S
Fines overlying Sand-- Fines of variable thickness, commonly in thinly bedded layers overlie sand of variable thickness (distal lake-bottom deposits overlying slightly older more delta-proximal lacustrine sediment)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
F/SG
Fines overlying Sand and Gravel - Fines of variable thickness, commonly in thinly bedded layers overlie sand and gravel of ariable thickness (lake-bottom deposits overlying slightly older collapsed proximal fluvial or deltaic deposits); in a few places sand or sand and gravel, generally less than 25 ft thick occurs on top of the F/SG unit and is indicated as S/F/SG and SG/F/SG on the map, respectively
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G
Gravel - Composed mainly of gravel-sized particles; cobbles and boulders predominate; minor amounts of sand within gravel beds, and sand comprises few separate layers. Gravel layers generally are poorly sorted and bedding commonly is distorted and faulted due to postdepositional collapse related to melting of ice. Gravel deposits are shown only where observed in the field; additional gravel deposits may be expected, principally in areas mapped as unit SG (proximal fluvial deposits or delta-topset beds)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G/F
Gravel overlying Fines - Gravel is generally less than 20 ft thick, horizontally bedded and overlies thicker thinly bedded fines (proximal fluvial deposits overlying lake-bottom sediments)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G/S
Gravel overlying Sand-- Gravel is generally less than 20 ft thick, horizontally bedded, and overlies thicker, inclined layers of sand (proximal deltaic deposits)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G/S/F
Gravel overlying Sand overlying Fines - Gravel is generally less than 20 ft thick, horizontally bedded and overlies thicker inclined beds of sand which in turn overlie fines of variable thickness (proximal deltaic deposits overlying lake-bottom sediments)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G/SG
Gravel overlying Sand and Gravel - Gravel is generally less than 20 ft thick, horizontally bedded, and overlies thicker, inclined layers of sand and gravel (proximal deltaic deposits)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
G/SG/S
Gravel overlying Sand and Gravel overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
S
Sand - Composed mainly of very coarse to fine sand, commonly in well-sorted layers. Coarser layers may contain up to 25 percent gravel particles, generally granules and  pebbles; finer layers may contain some very fine sand, silt, and clay (delta-foreset beds, very distal fluvial deposits, or windblown sediment)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
S/F
Sand overlying Fines - Sand is of variable thickness, commonly in inclined foreset beds and overlies thinly bedded fines of variable thickness (distal deltaic deposits overlying lake-bottom sediment)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
S/F/SG
Sand overlying Fines overlying Sand and Gravel
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
S/G
Sand overlying Gravel - Sand of variable thickness overlies gravel of variable thickness (younger distal deltaic or fluvial sediments overlying older, more proximal fluvial or deltaic sediments)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
S/SG
Sand overlying Sand and Gravel - Sand of variable thickness overlies sand and gravel of variable thickness (distal deltaic or fluvial sediments overlying slightly older proximal fluvial or deltaic sediments)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG
Sand and gravel - Composed of mixtures of gravel and sand within individual layers and as alternating layers. Sand and gravel layers generally range from 25 to 50 percent gravel particles and from 50 to 75 percent sand particles. Layers are well to poorly sorted; bedding may be distorted and faulted due to postdepositional collapse. It is likely that some deposits within this map unit actually are gravel or sand and gravel overlying sand. It is less likely that some of these deposits are sand (fluvial deposits or delta-topset beds)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG/F
Sand and Gravel overlying Fines - Sand and gravel is generally less than 20 ft thick, horizontally bedded and overlies thicker thinly bedded fines (fluvial meltwater terrace deposits overlying lake-bottom sediment)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG/F/SG
Sand and Gravel overlying Fines overlying Sand and Gravel
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG/S
Sand and Gravel overlying Sand - Sand and gravel is generally less that 20 ft thick, horizontally bedded, and overlies thicker, inclined layers of sand (deltaic deposits)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG/S/F
Sand and Gravel overlying Sand overlying Fines - Sand and gravel is generally less than 20 ft thick, horizontally bedded and overlies thicker inclined beds of sand which in turn overlie thinly bedded fines of variable thickness (deltaic deposits overlying lake-bottom sediment)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SG/S/SG
Sand and Gravel overlying Sand overlying Sand and Gravel - Sand and gravel is generally less than 20 ft thick, horizontally bedded, and overlies thicker inclined layers of sand; thickness of sand and gravel at the base of the section is variable (deltaic deposits overlying slightly older, more proximal deposits)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SM
Salt-marsh and tidal-marsh deposits - Peat and muck interbedded with sand and silt, deposited in environments of low wave energy along the coast and in river estuaries. Marsh deposits are dominantly peat and muck, generally a few feet to 35 ft thick. In the major estuaries marsh deposits may overlie estuarine deposits which are sand and silt with minor organic material as much as 40 - 90 ft thick. These deposits are generally underlain by the glacial material shown adjacent on the map; either till or sand and gravel. Where they are known or inferred to be underlain by sand or fines, they are shown on the map by stacked units.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SM/F
Salt-marsh and tidal-marsh deposits overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SM/S/F
Salt-marsh and tidal-marsh deposits overlying Sand overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW
Swamp deposits - Muck and peat that contain minor amounts of sand, silt, and clay, accumulated in poorly drained areas. Most swamp deposits are less than about 10 ft thick. Swamp deposits are underlain by glacial deposits or bedrock. They are often underlain by glacial till even where they occur within glacial meltwater deposits. Where swamp deposits are known or inferred to be underlain by sand and/or fines, they are shown on the map by the stacked unit.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/F
Swamp deposits overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/F/S
Swamp deposits overlying Fines overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/S
Swamp deposits overlying Sand
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/S/F
Swamp deposits overlying Sand overlying Fines
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/S/SG
Swamp deposits overlying Sand overlying undifferentiated coarse deposits (Sand and Gravel)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
SW/SG
Swamp deposits overlying undifferentiated coarse deposits (Sand and Gravel)
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
T
Thin Till - areas where till is generally less than 10-15 ft thick and including areas of bedrock outcrop where till is absent. Predominantly upper till; loose to moderately compact, generally sandy, commonly stony. Two facies are present in some places; a looser, coarser-grained ablation facies, melted out from supraglacial position; and a more compact finer-grained lodgement facies deposited subglacially. In general, both facies of upper till derived from the red Mesozoic sedimentary rocks of  the central lowland of Connecticut are finer-grained, more compact, less stony and have fewer surface boulders than upper till derived from crystalline rocks of the eastern and western highlands.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
TA
Talus - Loose, angular blocks (mostly boulders) accumulated by rockfall at the bases of steep bedrock cliffs. Talus forms steep unstable slopes and is generally less than 10 ft thick. It occurs most extensively along the linear basalt and diabase ridges within the central lowland.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
TS
Sandy Till, Sand and Gravel, some areas of dense surface bolders (End moraine deposits) - Composed predominantly of ablation facies sandy upper till; lenses of stratified sand and gravel occur locally within the till. Surface boulders on end moraine deposits are generally more numerous than on adjacent till surfaces; dense concentrations of boulders are present in some places. Deposits occur as free-standing hummocky landforms, commonly in elongate ridges that trend NNE - SSW, and range in thickness from 10 to 60 ft.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
TT
Thick Till - areas where till is greater than 10-15 ft thick and including drumlins in which till thickness commonly exceeds 100 ft (maximum recorded thickness is about 200 ft). Although upper till is the surface deposit, the lower till constitutes the bulk of the material in these areas. Lower till is moderately to very compact, and is commonly finer-grained and less stony than upper till. An oxidized zone, the lower part of a soil profile formed during a period of interglacial weathering, is generally present in the upper part of the lower till. This zone commonly shows closely-spaced joints that are stained with iron and manganese oxides.
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
W
Water - Defined as streams, lakes, ponds, bays, and estuaries greater than 5 acres in size. Surficial Material water polygon features are outlined by Surficial Material line features with a SMARC_COD attribute value of 2 (for Hydrography Shoreline).
Definition Source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Attribute definition source:
Surficial Materials Polygon Code - A key field used to classify surficial materials units. Attribute values are mostly single characters in length, except for stacked map units that include forward slashes (/) between the different textural types such as A/F, A/F/G, and A/F/SG.
SURFM_POLY
Definition:
Surficial Materials - The SURFM_POLY attribute includes longer text values for the mostly single-character values stored in the SMPOLY_COD field. SURFM_POLY is the English language equivalent of (decodes) the SMPOLY_COD field. For example, SMPOLY_COD and SURFM_POLY attribute values for the same polygon feature are G and Gravel, respectively. SURFM_POLY attribute values for stacked map units include forward slashes (/) between the different textural types such as Aluv/Fines, Aluv/Fines/Gravel, and Alluv/Fines/Sand+Gravel.
Alias: SURFM_POLY Type: String Width: 35 Precision: 0 Scale: 0
Attribute values: See Enumerated Domain Value Definitions for SMPOLY_COD attribute. Examples include Alluv, Aluv/Fines, Aluv/Fines/Gravel, and Alluv/Fines/Sand+Gravel.
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
OBJECTID
Definition:
Internal feature number.
Alias: OBJECTID Type: OID Width: 4 Precision: 10 Scale: 0
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
ESRI
DESCRIP
Definition:
Surficial Materials Description - Based on the SMPOLY_COD attribute, a longer decoded description of the map unit than that provided by the SURFM_POLY attribute. For example, SMPOLY_COD, SURFM_POLY, and DESCRIP attribute values for the same polygon feature are A/S, Aluv/Sand, and Aluvium overlying Sand, respectively.
Alias: DESCRIP Type: String Width: 65 Precision: 0 Scale: 0
Attribute values: See Enumerated Domain Value Definitions for Surficial Materials Description DESCRIP attribute.Examples include Alluvium, Aluvium overlying Fines, Aluvium overlying Fines overlying Gravel, and Alluvium overlying Fines overlying Sand and Gravel.
Attribute definition source:
U.S. Geological Survey and State of Connecticut, Department of Environmental Protection
Shape.area
Definition:
Feature geometry.
Alias: Shape.area Type: Double Width: 0 Precision: 0 Scale: 0
Attribute values: Coordinates defining the features.
Attribute definition source:
ESRI
Shape.len
Alias: Shape.len Type: Double Width: 0 Precision: 0 Scale: 0
ESRI Feature Description
Description of spatial objects in the data using the Environmental Systems Research Institute (ESRI) terminology.
Environmental Systems Research Institute (ESRI) terms
depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL
ESRI feature type: Simple
Geometry type: Polygon
Topology: FALSE
Feature count: 10843
Spatial index: TRUE
Linear referencing: FALSE
SDTS Feature Description
Description of point and vector spatial objects in the data using the Spatial Data Transfer Standards (SDTS) terminology.
Spatial data transfer standard (SDTS) terms
depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL
Type: G-polygon
Count: 10843
+ Data Quality and Accuracy Information
General
Information about the fidelity of relationships, data quality and accuracy tests, omissions, selection criteria, generalization, and definitions used to derive the data.
Logical consistency report:
Polygon features conform to the following topological rules. Polygons are single part. There are no duplicate polygons. Polygons do not self overlap. Polygons do not overlap other polygons. Lines are single part. Line features conform to the following topological rules. There are no duplicate lines. Lines do not self overlap. Lines do not overlap other lines. Lines intersect only at nodes, and nodes anchor the ends of all lines. Lines do not overshoot or undershoot other lines they are supposed to meet and intersect. In general, there are no duplicate features, unresolved intersections, overshooting lines, open polygons, sliver polygons, or unlabeled (unattributed) polygons. 

The tests of logical consistency were performed by the State of Connecticut using ESRI ArcInfo software to maintain feature topology in ArcInfo coverage format. The data is topologically clean. The ArcInfo Clean function was repeatedly used following edits to verify topology and enforce a minimum distance between vertices of 4 feet (fuzzy tolerance) and a minimum allowed overshoot length of 0 feet (dangle length).
Completeness report:
The data reflects the content of the data sources: the Surficial Aquifer Texture data layer, a derivitive product of the Surficial Materials datalayer, and the thickness of glacial sediments datalayer of the Quaternary Geologic Map of Connecticut and The Long Island Sound Basin. The Surficial Materials datalayer was digitized 1:24,000-scale mylar compilation sheets.The materials texture was taken from a set of 1:24,000 scale mylar sheets used to compile and publish the Surficial Material Map of Connecticut, Stone and others, 1992 (U.S. Geological Survey in cooperation with the Connecticut Geological and Natural History Survey, DEP, 2 sheets, 1:125,000 publication scale).  The thickness of glacial sediments..............................
Attribute Accuracy
Accuracy of the identification of data entities, features and assignment of attribute values.
Attribute accuracy report:
The Connecticut Surficial Aquifer Texture data retains the underlying surficial material polygon feature and attribute information of the 1:24,000-scale Connecticut Surficial Materials layer, which retains the feature types and information identified on the 1:24,000-scale compilation sheets for the Surficial Materials Map of Connecticut, Stone and others, 1992. All attributes have valid values. Values are within defined domains. The accuracy test for the SMPOLY_COD attribute values was conducted by comparing the geologic map unit information presented on the source mylar overlays with 1:24,000-scale check plots or interactive displays of the digital data on a computer graphic system. These check plot maps and computer displays depicted and labeled the surficial material polygon features in different colors and line-fill patterns based on SMPOLY_COD attribute values for comparison with the original data source. SURFM_POLY and DESCRIP represent both brief and full text English language equivalents of (decodes) the SMPOLY_COD attribute, respectively. The TEXTURE, TEXTURE_GRP and STRAT_DRIFT that classify the SMPOLY_COD values into various texture categories and were populated by joining the Surficial_Aquifer_Texture_Data lookup data table to the polygon features using SMPOLY_COD as the relate key field instead of manually entering these values for each polygon feature. The Surficial_Aquifer_Texture_Data lookup table accounts for all 50 values of SMPOLY_COD, assigning each value a corresponding TEXTURE, TEXTURE_GRP and STRAT_DRIFT value.
Positional Accuracy
Accuracy of the positional aspects of the data.
Horizontal accuracy report:
The horizontal positional accuracy of this data complies with the United States National Map Accuracy Standards for 1:24,000 scale maps. According to this standard, not more than 10 percent of the locations tested are to be in error by more than 1/50 inch (40 feet) measured on the publication scale of a USGS 7.5 minute topographic quadrangle map. Feature locations were interpolated from the transporation features, surface water features, elevation contours, buildings,  built-up areas, and other natural features and landforms depicted on USGS 7.5 minute topographic quadrangle maps.
+ Data Source and Process Information
Data Sources
Information about the source data used to construct or derive the data.
Data source information
SURF_AQUIF_TEXT
Title: Connecticut Surficial Aquifer Texture
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (source data compiler, editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 2007
Data type: vector digital data
Data location: http://www.ct.gov/deep
Map scale denominator: 24,000
Media: disc
Source contribution:
Surficial Aquifer Texture based on a reclassification and generalization of the 1:24,000 scale compilation Surficial Materials Map of Connecticut by Stone and others, 1992. 
Surficial_Aquifer_Texture_Data is in GeoDatabase data table format. The TEXTURE_GRP attribute values were combined with thickness of unconsolidated materials data, THICK_UNCONSOL_MAT to produce Connecticut Surficial Aquifer Potential.
Date: 2008
Currentness reference:
publication date
THICK_UNCONSOL_MAT
Title: Thickness of Glacial Sediments in Connecticut and the Long Island Sound Basin
Originators: Long Island Sound Resource Center, a partnership between the State of Connecticut, Department of Environmental Protection and the University of Connecticut (data compiler, editor and publisher)
U.S. Geological Survey (source data compiler)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 2004
Data type: map
Data location: http://www.ct.gov/deep
Map scale denominator: 1:125,000
Media: disc
Source contribution:
Thickness of Unconsolidated Materials, THICK_UNCONSOL_MAT, 1:125,000 scale compilation, Thickness of Glacial Sediments in Connecticut and Long Island Sound Basin Polygon Glacial_Sediment_Thickness_poly is in Geodatabase Feature Class format.
The THICKI_FT attribute values were combined with Surficial Aquifer Texture data SURF_AQUIF_TEXT to produce the Connecticut Surficial Aquifer Potential Map.
Date: 2004
Currentness reference:
publication date
SURF_AQUIF_POT
Title: Connecticut Surficial Aquifer Potential
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (data compiler, editor and publisher)
Data location: http://www.ct.gov/deep
Map scale denominator: 1:125,000
Media: disc
Date: 200803
Currentness reference:
publication date
Process Steps
Information about events, parameters, tolerances and techniques applied to construct or derive the data.
Process step information
Process Step 1
Process description:
Surficial Aquifer Texture, SURF_AQUIF_TEXT, data TEXTURE_GRP  attribute vales were combined with thickness of unconsolidated materials data, THICK_UNCONSOL_MAT data SRFAQTHKFT attribute values to produce hydrostratigraphic mapping units. These hydrostratigraphic units define areas with similar potential for ground water flow. Resulting units included areas of coarse-grained deposits, coarse-grained deposits overlying fine-grained deposits, fine-grained deposits, and areas where fine-grained deposits overlie coarse grained deposits, each with thickness intervals of 0-50 ft., 50-100 ft., 100-200 ft., 200-300 ft., 300-400 ft., 400-500 ft., 500-600 ft., and greater than 600 ft. Areas of coarse-grained deposits, and fine-grained deposits overlying coarse-grained deposits (attribute SRFAQPOT) with corresponding thicknesses were saved for inclusion in the final map. Other areas of glacial meltwater deposits considered to have lower potential ground water yield were aggregated into a single map unit.
Person: Margaret Thomas
Organization: Connecticut Geological Survey, Department of Environmental Protection
Position: State Geologist
Phone: 860-424-3540
Fax: 860-424-4058
Email: margaret.thomas@ct.gov
Hours of service: 8:30-16:30 Eastern Standard Time
Address type: mailing and physical address
Address:
79 Elm Street, 6th floor
City: Hartford
State or Province: CT
Postal code: 06106
Country: USA
Process date: 2007
Data Source used
SURF_AQUIF_TEXT
Title: Connecticut Surficial Aquifer Texture
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (source data compiler, editor and publisher)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 2007
Data type: vector digital data
Data location: http://www.ct.gov/deep
Map scale denominator: 24,000
Media: disc
Source contribution:
Surficial Aquifer Texture based on a reclassification and generalization of the 1:24,000 scale compilation Surficial Materials Map of Connecticut by Stone and others, 1992. 
Surficial_Aquifer_Texture_Data is in GeoDatabase data table format. The TEXTURE_GRP attribute values were combined with thickness of unconsolidated materials data, THICK_UNCONSOL_MAT to produce Connecticut Surficial Aquifer Potential.
Date: 2008
Currentness reference:
publication date
THICK_UNCONSOL_MAT
Title: Thickness of Glacial Sediments in Connecticut and the Long Island Sound Basin
Originators: Long Island Sound Resource Center, a partnership between the State of Connecticut, Department of Environmental Protection and the University of Connecticut (data compiler, editor and publisher)
U.S. Geological Survey (source data compiler)
Publisher: State of Connecticut, Department of Environmental Protection
Publication place: Hartford, Connecticut, USA
Publication date: 2004
Data type: map
Data location: http://www.ct.gov/deep
Map scale denominator: 1:125,000
Media: disc
Source contribution:
Thickness of Unconsolidated Materials, THICK_UNCONSOL_MAT, 1:125,000 scale compilation, Thickness of Glacial Sediments in Connecticut and Long Island Sound Basin Polygon Glacial_Sediment_Thickness_poly is in Geodatabase Feature Class format.
The THICKI_FT attribute values were combined with Surficial Aquifer Texture data SURF_AQUIF_TEXT to produce the Connecticut Surficial Aquifer Potential Map.
Date: 2004
Currentness reference:
publication date
Data Source produced
SURF_AQUIF_POT
Title: Connecticut Surficial Aquifer Potential
Originators: State of Connecticut, Department of Environmental Protection, Geological and Natural History Survey (data compiler, editor and publisher)
U.S. Geological Survey (data compiler, editor and publisher)
Data location: http://www.ct.gov/deep
Map scale denominator: 1:125,000
Media: disc
Date: 200803
Currentness reference:
publication date
ESRI geoprocessing history
Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.
ESRI geoprocessing command information
1 Process
Date: 20090312 Time: 123639
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Conversion Tools.tbx\FeatureClassToFeatureClass
Command issued: FeatureClassToFeatureClass Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential SURFICIAL_AQUIFER_POTENTIAL.shp # "SRFAQPOT 'SRFAQPOT' true true false 50 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SRFAQPOT,-1,-1;SRFAQTHKFT 'SRFAQTHKFT' true true false 50 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SRFAQTHKFT,-1,-1;THICKNS_FT 'THCKNS_FT' true true false 10 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,THICKNS_FT,-1,-1;TEXTURE 'TEXTURE' true true false 40 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,TEXTURE,-1,-1;TEXTUREGRP 'TEXTUREGRP' true true false 40 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,TEXTUREGRP,-1,-1;STRATDRIFT 'STRATDRIFT' true true false 40 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,STRATDRIFT,-1,-1;SMPOLY_COD 'SMPOLY_COD' true true false 8 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SMPOLY_COD,-1,-1;SURFM_POLY 'SURFM_POLY' true true false 35 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SURFM_POLY,-1,-1;DESCRIP 'DESCRIP' true true false 65 Text 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,DESCRIP,-1,-1;SHAPE_Leng 'SHAPE_Length' false true true 8 Double 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SHAPE_Length,-1,-1;SHAPE_Area 'SHAPE_Area' false true true 8 Double 0 0 ,First,#,Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Surf_Aquifer_Potential.mdb\SURFICIAL_AQUIFER_POTENTIAL,SHAPE_Area,-1,-1" # Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\SURFICIAL_AQUIFER_POTENTIAL.shp
2 CopyFeatures_2
Date: 20090312 Time: 123840
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\SURFICIAL_AQUIFER_POTENTIAL.shp Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Geology.mdb\SURFICIAL_AQUIFER_POTENTIAL # 0 0 0
3 CopyFeatures_3
Date: 20090312 Time: 124055
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures
Command issued: CopyFeatures Y:\Workspaces\GIS_Drop_Box\SurfAquiferPotential\Geology.mdb\SURFICIAL_AQUIFER_POTENTIAL "Database Connections\10.18.8.60.depgis@dep_92dc.sde\depgis.DEP.SURFICIAL_AQUIFER_POTENTIAL" DEPFEATURESTATIC 0 0 0
+ Data Distribution Information
General
Description of the data known by the party from whom the data may be obtained, liability of party distributing data, and technical capabilities required to use the data.
Resource description:
Connecticut Surficial Aquifer Potential
Distribution Point of Contact
Contact information for the individual or organization distributing the data.
Organization: State of Connecticut, Department of Environmental Protection
Standard Order Process
Common ways in which data may be obtained.
Digital form:
Format specification:
Shapefile, Feature Class
Format information content:
vector digital data
Size of the data: 43M
Transfer size: 16M
File decompression technique: Zip file
Digital transfer option:
Online option:
Computer information:
Network address:
Network resource name: http://www.ct.gov/deep
+ Metadata Reference
Metadata Date
Dates associated with creating, updating and reviewing the metadata.
Last updated: 20120125
Language of metadata: en
Metadata Point of Contact
Contact information for the individual or organization responsible for the metadata information.
Organization: Connecticut Geological Survey, Department of Environmental Protection
Person: Margaret Thomas
Position: State Geologist
Phone: 860-424-3583
Fax: 860-424-4058
Email: margaret.thomas@ct.gov
Hours of service: 8:30-16:00, Eastern Standard Time, Mon-Fri
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106-5127
Country: USA
Metadata Standards
Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention: local time
Metadata profiles defining additonal information:
Profile: ESRI Metadata Profile
FGDC Plus Metadata Stylesheet
Stylesheet: FGDC Plus Stylesheet
File name: FGDC Plus.xsl
Version: 2.2
Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.
Instructions: On the top of the page, click on the title of the dataset to toggle opening and closing of all metadata content sections or click section links listed horizontally below the title to open individual sections. Click on a section name (e.g. Description) to open and close section content. Within a section, click on a item name (Status, Key Words, etc.) to open and close individual content items. By default, the Citation information within the Description section is always open for display.
Download: FGDC Plus Stylesheet is available from the ArcScripts downloads at www.esri.com.