Name: TCEQ_AU_Lines_2020

Display Field: BASIN_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: 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.

Copyright Text: TCEQ Surface Water Quality Monitoring Program

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.1908341304275516E7
YMin: 2955512.036150932
XMax: -1.0374806993162695E7
YMax: 4369307.507924557
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSLSSolid
Color: [151, 219, 242, 255]
Width: 1
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• AU_ID ( type: esriFieldTypeString, alias: AU_ID, length: 9 )
• SEG_ID ( type: esriFieldTypeString, alias: SEG_ID, length: 6 )
• BASIN_ID ( type: esriFieldTypeSmallInteger, alias: BASIN_ID )
• BASIN_NAME ( type: esriFieldTypeString, alias: BASIN_NAME, length: 33 )
• SEG_NAME ( type: esriFieldTypeString, alias: SEG_NAME, length: 104 )
• SEG_CLASS ( type: esriFieldTypeString, alias: SEG_CLASS, length: 12 )
• SEG_TYPE ( type: esriFieldTypeString, alias: SEG_TYPE, length: 20 )
• SEG_DESCRIPTION ( type: esriFieldTypeString, alias: SEG_DESCRIPTION, length: 254 )
• Length_Mi ( type: esriFieldTypeDouble, alias: Length_Mi )
• AU_LOCATION_DESCRIPTION ( type: esriFieldTypeString, alias: AU_LOCATION_DESCRIPTION, length: 253 )
• AU_TYPE ( type: esriFieldTypeString, alias: AU_TYPE, length: 2 )
• AU_STREAM_FLOW_TYPE ( type: esriFieldTypeString, alias: AU_STREAM_FLOW_TYPE, length: 20 )
• AU_STREAM_FLOW_TYPE_SOURCE ( type: esriFieldTypeString, alias: AU_STREAM_FLOW_TYPE_SOURCE, length: 22 )
• AU_STREAM_FLOW_TYPE_NOTES ( type: esriFieldTypeString, alias: AU_STREAM_FLOW_TYPE_NOTES, length: 128 )
• AU_DESCRIPTION_SOURCE ( type: esriFieldTypeString, alias: AU_DESCRIPTION_SOURCE, length: 55 )
• ALU_DESIGNATION ( type: esriFieldTypeString, alias: ALU_DESIGNATION, length: 12 )
• ALU_DESIGNATION_SOURCE ( type: esriFieldTypeString, alias: ALU_DESIGNATION_SOURCE, length: 29 )
• AU_FISHERY_TYPE ( type: esriFieldTypeString, alias: AU_FISHERY_TYPE, length: 11 )
• APPENDIX_D_FLG ( type: esriFieldTypeSmallInteger, alias: APPENDIX_D_FLG )
• APPENDIX_E_FLG ( type: esriFieldTypeSmallInteger, alias: APPENDIX_E_FLG )
• TABLE_5_FLG ( type: esriFieldTypeSmallInteger, alias: TABLE_5_FLG )
• AU_NOTES ( type: esriFieldTypeDouble, alias: AU_NOTES )
• AU_BED_SLOPE ( type: esriFieldTypeDouble, alias: AU_BED_SLOPE )
• AU_STREAM_ORDER ( type: esriFieldTypeSmallInteger, alias: AU_STREAM_ORDER )
• AU_STREAM_ORDER_NOTES ( type: esriFieldTypeSmallInteger, alias: AU_STREAM_ORDER_NOTES )
• AU_BOUNDARY_CHANGE ( type: esriFieldTypeSmallInteger, alias: AU_BOUNDARY_CHANGE )
• PREVIOUS_AU_ID ( type: esriFieldTypeString, alias: PREVIOUS_AU_ID, length: 9 )
• IR_YEAR ( type: esriFieldTypeString, alias: IR_YEAR, length: 4 )
• RETIRED_IND ( type: esriFieldTypeString, alias: RETIRED_IND, length: 1 )
• RETIRED_COMMENTS_TXT ( type: esriFieldTypeString, alias: RETIRED_COMMENTS_TXT, length: 161 )
• IMP_AQUATIC_LIFE ( type: esriFieldTypeString, alias: IMP_AQUATIC_LIFE, length: 1 )
• IMP_CONTACT_REC ( type: esriFieldTypeString, alias: IMP_CONTACT_REC, length: 1 )
• IMP_GENERAL ( type: esriFieldTypeString, alias: IMP_GENERAL, length: 1 )
• IMP_FISH_CONSUMPTION ( type: esriFieldTypeString, alias: IMP_FISH_CONSUMPTION, length: 1 )
• IMP_PWS ( type: esriFieldTypeString, alias: IMP_PWS, length: 1 )
• IMP_OYSTER_WATERS ( type: esriFieldTypeString, alias: IMP_OYSTER_WATERS, length: 1 )
• IMP_REC_BEACHES ( type: esriFieldTypeString, alias: IMP_REC_BEACHES, length: 1 )
• IMPAIRED ( type: esriFieldTypeString, alias: IMPAIRED, length: 1 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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