Brad Segrest, MDEQ, GIS Analyst Office of Pollution Contrl
20160401
SWIMS.ms303d_2016_p
vector digital data
Section 303(d) of the Clean Water Act requires the state to identify water bodies that do not meet one or more applicable water quality standards and for which TMDLs are needed. This dataset is Mississippi’s Section 303(d) List of Impaired Water Bodies. It identifies impaired water bodies and establishes a priority ranking for such waters, taking into account the severity of the pollution and the uses to be made of the water bodies. The Section 303(d) listing requirement applies to water bodies impaired by point and nonpoint sources.
2016 303d list of Water Quality Limited waters that are being addressed by the Mississippi Department of Environmental Quality. These waters require TMDLs to address Impairment. These data are represented by both a polyline feature class and a polygon feature class.
Each state and tribe collects these assessments and extensive programmatic information in a 305(b) report, a document usually involving information from multiple agencies. Reports are submitted to EPA every two years. Data represented in this shapefile date from 1Jan2004 through 31Dec2008. Shapefile is based upon USGS NHD 1:100,000 line work.
20020401
20160401
2002-2016 ACTIVE 303D LISTED WATERS
None planned
-91.087241
-90.968551
33.799398
32.479028
None
Clean Water Act
Water
Assessement
Surface Water Quality
305b
None
Mississippi
None
2004-2008
None
Scale and Resolution for USGS 1:100,000 Scale Data
MDEQ
Brad Segrest
GIS Analyst Office of Pollution Contrl
physical
515 E Amite St
Jackson
MS
39201
US
6019615657
brad_segrest@deq.state.ms.us
Mississippi Department of Environmental Quality
NONE
Unclassified
NONE
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143
Vector
GT-polygon composed of chains
2
MSTM
0.9998335
-89.75
32.5
500000.0
1300000.0
coordinate pair
0.0001
0.0001
meter
D North American 1983
GRS 1980
6378137.0
298.257222101
SWIMS.ms303d_2016_p
FEATURE CLASS
ESRI
OBJECTID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
WBNAME
WATERBODY NAME
MDEQ
WATERBODY NAME
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
ACRES
FEATURE SIZE IN ACRES
ESRI
993.896204
4476.173213
ACRES
NAME
WATERBODY ID
MDEQ
WATERBODY ID TO TIE BACK TO 303D LIST AND TMDL REPORTS
MWS
MISSISSIPPI WATERSHED, SAME GEOMETRY AS USGS SUBWATERSHED, 4 DIGIT INTEGER VALUE
MDEQ
WATERSHED
MDEQ
MDEQ
1000
9920
WATERSHED
1
REMAINING
WATER CATEGORY
mdeq
WATER TYPE CATEGORY
SHAPE.AREA
shape area
ESRI
4022155.236433
18114430.313867
sqmeters
0.999
SHAPE.LEN
shape length
esri
24031.42076
35719.94565
meters
0.999
20150421
MDEQ
Brad Segrest
GIS Analyst Office of Pollution Contrl
physical
515 E Amite St
Jackson
MS
39201
US
6019615657
brad_segrest@deq.state.ms.us
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time