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Impaired Waters_Clip
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Geographic
GCS_North_American_1983
Angular Unit: Degree (0.017453)
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Impaired Waters_Clip
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36.492149
25.837157
General purpose use; to support agency-wide policy decisions regarding surface water quality in the State of Texas. Due to the various scales inherent from using multiple sources in the creation of this dataset, this layer should not be used for making important decisions at scales greater than 1:250,000.
<DIV STYLE="text-align:Left;"><P STYLE="margin:0 0 0 0;"><SPAN>This layer depicts the official TCEQ Line Assessment Units (AU) for the State of Texas as listed in Title 30, Chapter 307 of the Texas Administrative Code (TAC), also known as the Texas Surface Water Quality Standards. Assessment Units are sub-areas of segments, defined as the smallest geographic area of use support reported in the assessment. These are freshwater and tidal streams that have been individually defined by the TCEQ and assigned unique identification numbers. Intended to have relatively homogeneous chemical, physical, and hydrological characteristics, an AU provides a basic unit for assigning site-specific standards and for applying water quality management programs of the agency. AU's from both "classified" and "unclassified" segments have been included in this layer. Classified segments, also referred to as designated segments, refer to water bodies that are protected by site- specific criteria. The classified segments are listed and described in Appendix A and C of Chapter 307.10. The site-specific uses and criteria are described in Appendix A. Classified waters include most rivers and their major tributaries, major reservoirs, and estuaries. Unclassified waters are those smaller water bodies that do not have site-specific water quality standards assigned to them, but instead are protected by general standards that apply to all surface waters in the state. This layer also indentifies which AUs and water bodies have been assessed in the 2014 Texas Integrated Report for Clean Water Act Sections 305 (b) and 303 (d). An impaired AU is included in Categories 4 and 5. Category 4 includes impairments that are not suitable for a TMDL or for which a TMDL has already been approved. Category 5 includes impairments which may be suitable for development of a TMDL and comprise the 303 (d) List.</SPAN></P></DIV>
TCEQ Surface Water Quality Monitoring Program
WQMP 2020
Shapefile
0.000
dataset
EPSG
6.12(3.0.1)
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Simple
FALSE
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FALSE
Impaired Waters_Clip
Feature Class
0
FID
FID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
AU_ID
AU_ID
String
50
0
0
SEG_ID
SEG_ID
String
50
0
0
BASIN_ID
BASIN_ID
Double
19
0
0
BASIN_NAME
BASIN_NAME
String
50
0
0
SEG_NAME
SEG_NAME
String
254
0
0
SEG_CLASS
SEG_CLASS
String
50
0
0
SEG_TYPE
SEG_TYPE
String
50
0
0
SIZE_UNIT
SIZE_UNIT
String
50
0
0
AU_SIZE
AU_SIZE
Double
19
0
0
SEG_DESCRI
SEG_DESCRI
String
254
0
0
AU_TYPE
AU_TYPE
String
50
0
0
AU_LOCATIO
AU_LOCATIO
String
254
0
0
AU_NOTES
AU_NOTES
Double
19
0
0
AU_STREAM_
AU_STREAM_
String
50
0
0
AU_STREAM1
AU_STREAM1
String
254
0
0
AU_STREA_1
AU_STREA_1
String
254
0
0
AU_DESCRIP
AU_DESCRIP
String
254
0
0
ALU_DESIGN
ALU_DESIGN
String
50
0
0
ALU_DESI_1
ALU_DESI_1
String
254
0
0
AU_FISHERY
AU_FISHERY
String
50
0
0
APPENDIX_D
APPENDIX_D
Double
19
0
0
APPENDIX_E
APPENDIX_E
Double
19
0
0
TABLE_5_FL
TABLE_5_FL
Double
19
0
0
IR_YEAR
IR_YEAR
String
4
0
0
AU_BED_SLO
AU_BED_SLO
Double
19
0
0
AU_STREA_2
AU_STREA_2
Double
19
0
0
AU_STREA_3
AU_STREA_3
Double
19
0
0
AU_BOUNDAR
AU_BOUNDAR
Double
19
0
0
PREVIOUS_A
PREVIOUS_A
String
50
0
0
IMP_PWS
IMP_PWS
String
50
0
0
RETIRED_IN
RETIRED_IN
String
1
0
0
RETIRED_CO
RETIRED_CO
String
254
0
0
IMP_AQUATI
IMP_AQUATI
String
50
0
0
IMP_CONTAC
IMP_CONTAC
String
50
0
0
IMP_GENERA
IMP_GENERA
String
50
0
0
IMP_FISH_C
IMP_FISH_C
String
50
0
0
IMPAIRED
IMPAIRED
String
50
0
0
IMP_OYSTER
IMP_OYSTER
String
50
0
0
IMP_REC_BE
IMP_REC_BE
String
50
0
0
SHAPE
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
FIRST_IR_Y
FIRST_IR_Y
String
4
0
0
Shape_Leng
Shape_Leng
Double
19
0
0
20200324