20260918
15304500
1.0
ISO19139
FALSE
Water_Quality_Assessment_2026
002
Projected
GCS_North_American_1983
Linear Unit: Foot_US (0.304801)
NAD_1983_StatePlane_Tennessee_FIPS_4100_Feet
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.3.0'><WKT>PROJCS["NAD_1983_StatePlane_Tennessee_FIPS_4100_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1968500.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-86.0],PARAMETER["Standard_Parallel_1",35.25],PARAMETER["Standard_Parallel_2",36.41666666666666],PARAMETER["Latitude_Of_Origin",34.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2274]]</WKT><XOrigin>-121521300</XOrigin><YOrigin>-93934000</YOrigin><XYScale>3048.0060960121918</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102736</WKID><LatestWKID>2274</LatestWKID></ProjectedCoordinateSystem>
20260918
15231600
20260918
15231600
<p><strong>Overview</strong></p><p>This feature service contains polyline features used to represent water quality assessment units for a 2026 assessment cycle. The records store mapped stream or linear water features along with their assessed Overall Use attainment status, supporting watershed monitoring, reporting, and environmental review workflows. </p><p><strong>Content</strong></p><ul><li><strong>Polyline water features</strong> representing assessed linear water segments.</li><li><strong>Assessment status</strong> values represent an “overall use” assessment that capture whether each feature is fully supporting, threatened, not supporting, not assessed, or evaluated for water quality conditions for designated uses.</li><li><strong>Supporting context</strong> such as assessment unit names, location descriptions, water type and size, watershed identifiers, rationale notes, and measured length in miles.</li><li><strong>Rationale information</strong><span style="background-color:rgb(255,255,255); color:rgb(74,74,74); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:15px;"><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;"> used to summarize the basis for each assessment</span></span></li></ul><p><strong>Use</strong></p><p>The service supports GIS analysis and cartographic display of water quality conditions across mapped stream networks and related linear water assets. It is useful for environmental planning, watershed management, and reporting on assessment outcomes by geographic unit. <span style="background-color:rgb(255,255,255); color:rgb(74,74,74); font-family:"Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;"><span style="display:inline !important; float:none; font-style:normal; font-variant-caps:normal; font-variant-ligatures:normal; font-weight:400; letter-spacing:normal; text-align:start; text-decoration-color:initial; text-decoration-style:initial; text-indent:0px; text-transform:none; word-spacing:0px;">The 2026 assessment includes updates for Group 1 and 2 watersheds within the Division of Water Resources watershed planning process. These feature layers are intended to provide the spatial visualization of the Tennessee 2026 List of Impaired and Threatened Steams. The Tennessee 2026 List of Impaired and Threatened Streams is the official EPA approved document for water quality impairment.</span></span></p>
Water Quality Assessment Streams (2026)
2026-08-13T08:34:57
0.00
0.00
0.00
0.00
1
Tennessee
water quality
water quality assessment
impaired waters
threatened waters
Clean Water Act
303(d)
streams
rivers
lakes
watersheds
DWR
TDEC
2026
Polyline features representing 2026 water quality assessment units for mapped linear waters. Includes attainment status, watershed context, and supporting assessment details.
Esri ArcGIS 13.3.7.52636
2026-08-13
TDEC Division of Water Resources
File Geodatabase Feature Class
dataset
EPSG
5.3(9.0.0)
0
Simple
FALSE
0
TRUE
FALSE
Water_Quality_Assessment_2026
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
SE_ANNO_CA
SE_ANNO_CA
String
254
0
0
SOURCE_FEA
SOURCE_FEA
String
254
0
0
ASSESSMENT
ASSESSMENT
String
254
0
0
LOCATION_D
LOCATION_D
String
254
0
0
WATER_TYPE
WATER_TYPE
String
254
0
0
WATER_SIZE
WATER_SIZE
Double
8
0
0
ATTAINMENT
ATTAINMENT
String
254
0
0
CYCLE
CYCLE
Integer
4
0
0
HUC_8
HUC_8
String
254
0
0
NAME8
NAME8
String
254
0
0
ASSESSME_1
ASSESSME_1
String
254
0
0
MILES
MILES
Double
8
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.