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CT2016_Impaired_Rivers

Metadata:


Identification_Information:
Citation:
Citation_Information:
Title:
CT2016_Impaired_Rivers
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
The stormwater impaired waters layer is based on the 2016 Connecticut Integrated Water Quality Report (IWQR). All waters (rivers, lakes, estuaries) that were listed as impaired (EPA Category 5) in Table 3-4 of the report and all waters that were listed as having an adopted TMDL in place in Table 3-5 were identified. Both lists were then compared to the Impaired Waters guidance in Appendix D of the 2017 General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems Reissuance with Modifications.Waters with adopted TMDLs in the 2016 IWQR for the pollutants of concern listed in Appendix D (phosphorus, nitrogen, bacteria, mercury) of the General Permit were then identified and added to the Stormwater Impaired Waters layer.Waters without a TMDL in the 2016 IWQR were evaluated for causes that matched the causes listed in Appendix D for each pollutant. In addition, any water without a TMDL that mentioned stormwater as a potential cause was identified. These waters were then added to the Stormwater Impaired Waters layer. Waters in Table 3-4 of the IWQR that indicated any of the causes listed for Phosphorus or Nitrogen were listed as impaired for Phosphorus and Nitrogen per DEEP decision.The resulting list of stormwater impaired waterbodies were then matched up with the Connecticut 303(d) Impaired Waters 2016 (rivers, lakes and esturaries) waterbody features using the waterbody id. Information including stormwater pollutant of concern, cause, impaired designated use and TMDL can be identified by clicking on the layer(s) in the MS4 viewer or with the identify tool in a desktop application.Connecticut 303(d) Impaired Waters 2010 is a subset of Connecticut 305(b) Assessed Waters 2010. If one of the designated uses is categorized as not Fully Supporting the assessed waterbody is considered impaired. Additional information about Integrated Water Quality reporting is available at the CT DEEP website.
Purpose:
CT 2016 Impaired Rivers is 1:24,000-scale data. It depicts stormwater impaired waters layer is based on the 2016 Connecticut Integrated Water Quality Report (IWQR).  This layer should be used with the other assessed waterbody layers: Stormwater Impaired Estuary and Stormwater Impaired Lakes. This layer should only be viewed with other 1:24,000-scale map data such as water quality classifications, roads, towns, topographic quadrangles, and digital orthophotos. Not intended for maps printed at map scales greater or more detailed than 1:24,000 scale (1 inch = 2,000 feet.)
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.677570
East_Bounding_Coordinate: -71.783287
North_Bounding_Coordinate: 42.048842
South_Bounding_Coordinate: 41.018290
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: stormwater
Theme_Keyword: MS4
Theme_Keyword: Connecticut
Access_Constraints: None
Use_Constraints:
None
Data_Set_Credit:
Connecticut Department of Energy and Environmental Protection (CT DEEP)
University of Connecticut, Center for Land Use Education and Research (CLEAR)
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.0.6491
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 323
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 StatePlane Connecticut FIPS 0600 Feet
Lambert_Conformal_Conic:
NAD 1983 StatePlane Connecticut FIPS 0600 Feet
Standard_Parallel: 41.2
Standard_Parallel: 41.86666666666667
Longitude_of_Central_Meridian: -72.75
Latitude_of_Projection_Origin: 40.83333333333334
False_Easting: 999999.999996
False_Northing: 499999.999998
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000026813284925708565
Ordinate_Resolution: 0.000000026813284925708565
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: CT2016_Impaired_Rivers
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: OBJECTID
Attribute:
Attribute_Label: ID305B
Attribute:
Attribute_Label: WATER_NAME
Attribute:
Attribute_Label: LOCATION
Attribute:
Attribute_Label: HUC_8
Attribute:
Attribute_Label: HU_8_Name
Attribute:
Attribute_Label: MILES
Attribute:
Attribute_Label: Waterbody_
Attribute:
Attribute_Label: WaterbodyN
Attribute:
Attribute_Label: BasinNo
Attribute:
Attribute_Label: BasinNoTMD
Attribute:
Attribute_Label: SWP_Concer
Attribute:
Attribute_Label: ImpairedDe
Attribute:
Attribute_Label: Cause
Attribute:
Attribute_Label: TMDL
Attribute:
Attribute_Label: TMDL_Link
Attribute:
Attribute_Label: Comment
Attribute:
Attribute_Label: DataSource
Attribute:
Attribute_Label: EPA_Cate_1
Attribute:
Attribute_Label: Type
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Metadata_Reference_Information:
Metadata_Date: 20180627
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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