Stream Segments 2000

Table of Contents

• 1 - Identification Information
• 2 - Data Quality Information
• 3 - Spatial Data Organization Information
• 4 - Spatial Reference Information
• 5 - Entity and Attribute Information
• 6 - Distribution Information
• 7 - Metadata Reference Information

The following text conforms with the hierarchy of data elements in the FGDC Content Standards for Digital Geospatial Metadata. This GIS layer supersedes all earlier copies, translations or coverages of the Air Quality Monitoring Stations coverage which may have been made by the Texas Commission on Environmental Quality (TCEQ).

Citation:

Citation_Information:

Originator: Texas Commission on Environmental Quality (TCEQ)
Publication_Date: 20021220
Title: TCEQ Stream Segments 2000
Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Austin, Texas
Publisher: TCEQ

Description:

Abstract:

This layer depicts the official TCEQ Stream Segments for the State of Texas as listed in Title 30, Chapter 307 of the Texas Administrative Code (TAC), also known as the Surface Water Quality Standards. These are streams and waterbodies that have been individually defined by the TCEQ and assigned unique identification numbers. Intended to have relatively homogeneous chemical, physical, and hydrological characteristics, a segment provides a basic unit for assigning site-specific standards and for applying water quality management programs of the agency.

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 segments and water bodies have been listed as impaired or threatened in the final draft of the Texas 2000 Clean Water Act Section 303(d) List (effective December 19, 2002). 303(d) Lists from other years can be accessed from TCEQ's Texas Water Quality Inventory and 303(d) List page. An impaired segment is a water body which does not meet the standards set for its use, or is expected not to meet its use in the near future. The database file associated with this layer contains fields which indicate which segments are impaired and which pollutants are responsible for the failure of those segments to meet water quality standards. For additional information and data related to Texas Surface Water Quality, please refer to the following TCEQ web site:
http://www.tceq.state.tx.us/nav/data/swq_data.html

PLEASE READ THE FOLLOWING IMPORTANT INFORMATION!!

This layer is not a complete hydrographic layer of Texas. It is only meant to show the classified and unclassified stream segments for the state. Therefore, many stream segments and water bodies will appear to be detached. To fill in the remaining hydrography, this layer should be used with the certified layer entitled "Major Streams".

When viewing the impaired segments, please note that for many segments, only a portion of that segment may be impaired! To determine which part of the segment is actually impaired, you must refer to the "Segment Summary" in the online 303(d) List

Purpose:
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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: unknown
Ending_Date: 20000901

Currentness_Reference: ground condition

Status:

Progress: Complete.
Maintenance_and_Update_Frequency: Daily

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -106.235345
East_Bounding_Coordinate: -93.213377
North_Bounding_Coordinate: 36.280410
South_Bounding_Coordinate: 25.705615

Keywords:

Theme:

Theme_Keyword_Thesaurus: none
Theme_Keyword: classified segments
Theme_Keyword: unclassified segments
Theme_Keyword: impaired segments
Theme_Keyword: water bodies
Theme_Keyword: Texas Surface Water Quality Standards
Theme_Keyword: TSWQS
Theme_Keyword: 307
Theme_Keyword: 303(d)

Access_Constraints: None
Use_Constraints:
Acknowledgement of the Texas Commission on Environmental Quality is appreciated on any products using this dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Texas Commission on Environmental Quality
Contact_Person: Michele Blair

Contact_Position:

Contact_Address:

Address_Type: mailing address
Address:
MC-165
P.O. Box 13087
City: Austin
State_or_Province: Texas
Postal_Code: 78711-3087
Country: U.S.A

Contact_Address:

Address_Type: physical address
Address:
MC-165
12100 Park 35 Circle, Bldg. F
City: Austin
State_or_Province: Texas
Postal_Code: 78711-3087
Country: U.S.A.

Contact_Voice_Telephone: (512) 239-4741
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: mblair@tceq.texas.gov
Hours_of_Service: 8:00 a.m. to 5:00 p.m. Monday Through Thursday, Central

Browse_Graphic:

Browse_Graphic_File_Name: http://www.tceq.state.tx.us/assets/public/gis/metadata/images/segments.gif
Browse_Graphic_File_Description: TCEQ Designated & Impaired Segments 2000
Browse_Graphic_File_Type: GIF

Data_Set_Credit:

Attribute_Accuracy:

Attribute_Accuracy_Report:
All attribute fields were derived from the GIS layers entitled segments_2000_pl and segments_2000_pg. The attributes from these two layers are based directly on the SEGID database maintained by the Surface Water Quality Monitoring Team of TCEQ. Database testing revealed a few blank fields, but no significant errors were found.

Logical_Consistency_Report: None.

Completeness_Report:

All segments were verified with the SEGID database maintained by the Surface Water Quality Monitoring Team. No segments were omitted. The dataset was found to be complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:
The linework was compared to the previous Segments layers as well as the TIGER/Line data. Most of the linework is consistent with the 1992 TIGER/Line data from the U.S. Census Bureau which is accurate to approximately 51 meters. Due to the various scales inherent from using multiple sources in the creation of this dataset, overlapping linework can be found in several areas. Testing revealed about 18 areas where overlapping line- work existed. Although some of these were fixed at the time of certification, a few still remain and will be fixed in later versions.

Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 32 - 127
Horizontal_Positional_Accuracy_Explanation: The segments layer is based on multiple sources of varying scales including 1:63,360-scale, 1:100,000-scale, and 1:250,000-scale. The National Map Accuracy Standard for 1:63,360-scale data is 32 meters and the standard for 1:250,000-scale data is 127 meters.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Census Bureau

Publication_Date: 1992

Title: TIGER/Line 1992

Publication_Information:

Publication_Place: Washington, DC
Publisher: U.S. Census Bureau

Other_Citation_Details:

Online_Linkage: http://www.census.gov/geo/www/tiger/

Source_Scale_Denominator: 100000

Type_of_Source_Media: digital file

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: Unknown
Ending_Date: 1992

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation:

Source_Contribution: Primary reference for locating water bodies

Source_Citation:

Citation_Information:

Originator: Texas Dept of Transportation
Publication_Date: unknown
Title: Texas Department of Transportation County Maps

Publication_Information:

Publication_Place: Austin, Texas Publisher: Texas Department of Transportation

Other_Citation_Details:

Online_Linkage: http://www.dot.state.tx.us/txdot.htm

Source_Scale_Denominator: 63630
Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: Unknown
Ending_Date: Unknown

Source_Currentness_Reference:

Source_Citation_Abbreviation:
Source_Contribution:
Secondary reference for locating water bodies.

Source_Citation:

Citation_Information:

Originator: United States Geological Survey
Publication_Date: unknown
Title: National Hydrography Dataset

Publication_Information:

Publication_Place: Sioux Falls, SD
Publisher: USGS

Other_Citation_Details:
Online_Linkage: http://nhd.usgs.gov/

Source_Scale_Denominator: 100000
Type_of_Source_Media: digital file

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: Unknown
Ending_Date: Unknown

Source_Currentness_Reference:

Source_Citation_Abbreviation:
Source_Contribution: Secondary reference for locating water bodies.

Process_Step:

Process_Description:
Using the segment descriptions from Chapter 307 (Texas Surface Water Quality Standards), the designated streams and waterbodies were extracted from TIGER/Line 92 data to create the initial Designated Stream Segments layer. Where that layer was lacking, missing streams and new reservoirs were table-digitized from TxDOT "half-scale" county map sheets. The Mexican side of the Amistad and Falcon reservoirs and the outlying boundaries of the border lakes were "heads-up" digitized from a digital map created in the early 1980s by the Texas Water Commission (from 1:250,000 AMS map sheets).
Process_Date: 19940304

Process_Step:

Process_Description:
The SPLIT and UNSPLIT functions of ArcEdit were used to split existing segments in order reassign new seg-ids to portions of those segments.

Process_Date: 19960402

Process_Step:

Process_Description: Using the descriptions from Chapter 307 (Texas Water Quality Standards) and county maps as a reference, five additional segments were extracted from the certified Major Streams layer and added to the Segments layer.
Process_Date: 19991001

Process_Step:

Process_Description:
Using editing tools in ArcView 3.2a, the segments layer was updated according to the 2000 revision of the Texas Surface Water Quality Standards (TSWQS). At this time, the unclassified segments were also added. The seg_name field was changed to reflect the full name that appears in the TSWQS, not just the common name for the water body. Several new fields were added including the segment classification, type, size, descriptive location, TCEQ region, and impaired status. Fragmented segments were merged so that each displayed segment was represented by only one record in the table. Seg-IDs for polygons were added to the polyline layer instead of just the polygon layer. Additional segment boundaries were added to reflect the 2000 revision and the addition of the unclassified segments.
Process_Date: 20011206

Process_Step:

Process_Description:
Throughout the year, several revisions were made to the segments layer. Some were corrections found in a secondary review process and others were modified according to the final list of approvals from the EPA. A listing of these revisions is provided below.
Process_Date: 20021220

0230 - merged 0230 and 0220 together as one single segment named 0220.
0202D - removed part of segment upstream from Lake Crook (0208).
0207A - shortened segment to a designated endpoint within Collinsworth County (old version incorrectly extended into Donley County).
0214A - shortened this segment to a point within Wilbarger County.
0220 - changed name to "Upper Pease / North Fork Pease River".
0502 - merged with 0503 and named segment 0503.
0502A - changed to 0503A in 2000 version.
0507A - extended segment so it connects with Lake Tawakoni (0507).
0511/0511A - fully extended these segments to connect at a designated point.
0604D - extended 0604D all the way to 0604.
0615A - changed to 0610B (for 2000 version).
1221B - wrong river was depicted. Should be South Leon River, not South Fork Leon River.
1244A - changed name from "North Fork Brushy Creek" to "Brushy Creek Above South Brushy Creek"
1256/1257 - merged these with segment 1242 and named the whole segment 1242.
1423A - extended segment so it connects to Twin Buttes Reservoir.
1424 - added additional 1424 segment west of Twin Buttes Reservoir.
1802 - merged with 1803 (1802 does not exist in the 2000 version).
1804B - changed to 1803C.

Indirect_Spatial_Reference: TCEQ Stream Segments 2000

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 172
SDTS_Point_and_Vector_Object_Type: Complete Chain
Point_and_Vector_Object_Count: 517
SDTS_Point_and_Vector_Object_Type: Complete Chain
Point_and_Vector_Object_Count: 643

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Lambert Conformal Conic

Lambert_Conformal_Conic:

Standard_Parallel: 34.916667
Standard_Parallel: 27.416667
Longitude_of_Central_Meridian: -100.000000
Latitude_of_Projection_Origin: 31.16667
False_Easting: 1000000.000000
False_Northing: 1000000.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.002048
Ordinate_Resolution: 0.002048

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Detailed_Description:

Entity_Type:

Entity_Type_Label: Seg_line.dbf
Entity_Type_Label: Seg_poly.dbf
Entity_Type_Definition: Segment streams & water bodies
Entity_Type_Definition_Source: ESRI ArcView shape file format

Attribute:

Attribute_Label: SEG_ID
Attribute_Definition: A unique 4 to 5 digit identification number as it appears in the Texas Surface Water Quality Standards. The first two digits indicate the river basin within which the segment can be found. SEG-IDs with a letter suffix indicate that the segment is unclassified.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0101
Range_Domain_Maximum: 2501

Attribute:

Attribute_Label: SEG_NAME
Attribute_Definition: The name of the classified or unclassified segment as it appears in the Texas Surface Water Quality Standards.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Unrepresentable domain: 30-character alpha-numeric attribute containing the name of the CCN holder.

Attribute:

Attribute_Label: SEG_CLASS
Attribute_Definition:
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Classified
Enumerated_Domain_Value_Definition:
Water bodies that are protected by site-specific criteria as outlined in the Surface Water Quality Standards.

Enumerated_Domain:

Enumerated_Domain_Value: Unclassified
Enumerated_Domain_Value_Definition:
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.

Attribute:

Attribute_Label: SEG_TYPE
Attribute_Definition:
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Freshwater Stream
Enumerated_Domain_Value_Definition:
Inland waters which exhibit no measurable elevation changes due to normal tides.

Enumerated_Domain:

Enumerated_Domain_Value: Tidal Stream
Enumerated_Domain_Value_Definition:
Descriptive of coastal waters which are subject to the ebb and flow of tides. For purposes of standards applicability, tidal waters are considered to be saltwater. Classified tidal waters include all bays and estuaries with a segment number that begins with 24xx, all streams with the word tidal in the segment name, and the Gulf of Mexico.

Enumerated_Domain:

Enumerated_Domain_Value: Reservoir
Enumerated_Domain_Value_Definition:
Reservoir Any natural or artificial holding area used to store, regulate or control water.

Enumerated_Domain:

Enumerated_Domain_Value: Ocean
Enumerated_Domain_Value_Definition: No description.

Enumerated_Domain:

Enumerated_Domain_Value: Estuary
Enumerated_Domain_Value_Definition: Regions of interaction between rivers and nearshore ocean water, where tidal action and river flow create a mixing of fresh and salt water.

Attribute:

Attribute_Label: SIZE
Attribute_Definition: Numeric value indicating length or area of the water body. To be used with the field called SIZE_UNITS.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 181600

Attribute:

Attribute_Label: SIZE_UNITS
Attribute_Definition: Indicates the unit of measurement. This field is meant to be used with the previous numeric field called SIZE.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Miles
Enumerated_Domain_Value_Definition: Unit of Measurement used for polyline segments.

Enumerated_Domain:

Enumerated_Domain_Value: Sq. Miles
Enumerated_Domain_Value_Definition: Unit of Measurement used for selected polygon segments.

Enumerated_Domain:

Enumerated_Domain_Value: Acres
Enumerated_Domain_Value_Definition: Unit of Measurement used for selected polygon segments.

Attribute:

Attribute_Label: LOCATION

Attribute_Definition: Verbal description indicating where the stream segment or water body begins and ends.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Unrepresentable domain: 30-character alpha-numeric attribute containing the name of the CCN holder.

Attribute:

Attribute_Label: BASIN Attribute_Definition: Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Canadian River Basin
Enumerated_Domain_Value_Definition: TCEQ Basin 1

Enumerated_Domain:

Enumerated_Domain_Value: Red River Basin
Enumerated_Domain_Value_Definition: TCEQ Basin 2

Enumerated_Domain:

Enumerated_Domain_Value: Sulphur River Basin
Enumerated_Domain_Value_Definition: TCEQ Basin 3

Enumerated_Domain:

Enumerated_Domain_Value: Cypress Creek Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 4

Enumerated_Domain:

Enumerated_Domain_Value: Sabine River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 5

Enumerated_Domain:

Enumerated_Domain_Value: Neches River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 6

Enumerated_Domain:

Enumerated_Domain_Value: Neches-Trinity Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 7

Enumerated_Domain:

Enumerated_Domain_Value: Trinity River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 8

Enumerated_Domain:

Enumerated_Domain_Value: Trinity-San Jacinto Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 9

Enumerated_Domain:

Enumerated_Domain_Value: San Jacinto River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 10

Enumerated_Domain:

Enumerated_Domain_Value: San Jacinto-Brazos Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 11

Enumerated_Domain:

Enumerated_Domain_Value: Brazos River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 12

Enumerated_Domain:

Enumerated_Domain_Value: Brazos-Colorado Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 13

Enumerated_Domain:

Enumerated_Domain_Value: Colorado River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 14

Enumerated_Domain:

Enumerated_Domain_Value: Colorado-Lavaca Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 15

Enumerated_Domain:

Enumerated_Domain_Value: Lavaca River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 16

Enumerated_Domain:

Enumerated_Domain_Value: Lavaca-Guadalupe Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 17

Enumerated_Domain:

Enumerated_Domain_Value: Guadalupe River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 18

Enumerated_Domain:

Enumerated_Domain_Value: San Antonio River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 19

Enumerated_Domain:

Enumerated_Domain_Value: San Antonio-Nueces Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 20

Enumerated_Domain:

Enumerated_Domain_Value: Nueces River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 21

Enumerated_Domain:

Enumerated_Domain_Value: Nueces-Rio Grande Coastal Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 22

Enumerated_Domain:

Enumerated_Domain_Value: Rio Grande River Basin

Enumerated_Domain_Value_Definition: TCEQ Basin 23

Enumerated_Domain:

Enumerated_Domain_Value: Bays & Estuaries

Enumerated_Domain_Value_Definition: TCEQ Basin 24

Attribute:

Attribute_Label: REGION
Attribute_Definition: TCEQ Service Regions.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 16

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Region 1 - Amarillo

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Region 2 - Lubbock

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Region 3 - Abilene

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: Region 4 - Arlington

Enumerated_Domain:

Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: Region 5 - Tyler

Enumerated_Domain:

Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition: Region 6 - El Paso

Enumerated_Domain:

Enumerated_Domain_Value: 7
Enumerated_Domain_Value_Definition: Region 7 - Midland

Enumerated_Domain:

Enumerated_Domain_Value: 8
Enumerated_Domain_Value_Definition: Region 8 - San Angelo

Enumerated_Domain:

Enumerated_Domain_Value: 9
Enumerated_Domain_Value_Definition: Region 9 - Waco

Enumerated_Domain:

Enumerated_Domain_Value: 10
Enumerated_Domain_Value_Definition: Region 10 - Beaumont

Enumerated_Domain:

Enumerated_Domain_Value: 11
Enumerated_Domain_Value_Definition: Region 11 - Austin

Enumerated_Domain:

Enumerated_Domain_Value: 12
Enumerated_Domain_Value_Definition: Region 12 - Houston

Enumerated_Domain:

Enumerated_Domain_Value: 13
Enumerated_Domain_Value_Definition: Region 13 - San Antonio

Enumerated_Domain:

Enumerated_Domain_Value: 14
Enumerated_Domain_Value_Definition: Region 14 - Corpus Christi

Enumerated_Domain:

Enumerated_Domain_Value: 15
Enumerated_Domain_Value_Definition: Region 15 - Harlingen

Enumerated_Domain:

Enumerated_Domain_Value: 16
Enumerated_Domain_Value_Definition: Region 16 - Laredo

Attribute:

Attribute_Label: IMPAIRED
Attribute_Definition: Single-character field indicating whether or not the water body was impaired in the 2000 Surface Water Quality Standards effective on September 1, 2000.
Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: y
Enumerated_Domain_Value_Definition: yes

Enumerated_Domain:

Enumerated_Domain_Value: n
Enumerated_Domain_Value_Definition: no

Attribute:

Attribute_Label: IMP_CODE
Attribute_Definition: Impaired Code. A one-digit numeric code indicating why the water body is listed as impaired. Attribute_Definition_Source: seginfo.dbf

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: DISSOLVED SOLIDS IMPAIRMENT. Includes impairments to the water body by elevated average concentrations of chlorides, sulfates, and total dissolved solids.

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: AQUATIC LIFE USE IMPAIRMENT. Includes impairments due to depressed dissolved oxygen, ambient toxicity in water, abient toxicity in sediment, metals in water, and organic substances in water.

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: DISSOLVED OXYGEN. Water bodies in which dissolved oxygen values are below the criteria set to support aquatic life.

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: METAL IN WATER. Water bodies in which metals in water are above the criteria to protect aquatic life.

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: AMBIENT TOXICITY. Water bodies in which ambient toxicity tests in sediment or water have shown impairments to "test organisms".

Enumerated_Domain:

Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: PUBLIC WATER SUPPLY USE IMPAIRMENT. Includes impairments to the public water supply use, mostly due to atrazine and alachlor.

Enumerated_Domain:

Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition: CONTACT RECREATION USE IMPAIRMENT. Water bodies with a contact recreation use in which the fecal coliform densities are above the maximum criterion.

Enumerated_Domain:

Enumerated_Domain_Value: 7
Enumerated_Domain_Value_Definition: OYSTER WATERS USE IMPAIRMENT. Water bodies in which the oyster waters use is impaired.

Enumerated_Domain:

Enumerated_Domain_Value: 8
Enumerated_Domain_Value_Definition: FISH CONSUMPTION USE IMPAIRMENT. Includes impairments due to fish consumption advisories issued by the Texas Dept of Health and impairments due to substances which are above the criteria set to protect human health.

Enumerated_Domain:

Enumerated_Domain_Value: 9 Enumerated_Domain_Value_Definition: TEMPERATURE / PH. Includes impairments in which temperature measurements are above the maximum value set in the standards and impairments in which pH values are outside the range set in the standards.

Entity_Type:

Entity_Type_Label: Seg_bndy.dbf
Entity_Type_Definition: Segment boundaries
Entity_Type_Definition_Source: ESRI ArcView shape file format

Attribute:

Attribute_Label: ID
Attribute_Definition: Numeric value assigned by ArcView in a consecutive manner as additional records are added.
Attribute_Definition_Source: ArcView 3.2a

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 638

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Texas Commission on Environmental Quality
Contact_Person: GIS Team

Contact_Address:

Address_Type: Mailing Address
Address:
MC-197
P.O. Box 13087
City: Austin
State_or_Province: TX
Postal_Code: 78711-3087
Country: U.S.A.

Contact_Address:

Address_Type: Physical Address
Address:
Building F
12100 Park 35 Circle
City: Austin
State_or_Province: Texas
Postal_Code: 78711-3087
Country: U.S.A.

Contact_Voice_Telephone: (512) 239-0859
Contact_Facsimile_Telephone: (512) 239-0888
Contact_Electronic_Mail_Address: gsmithha@tceq.texas.gov
Hours_of_Service: 8:00am - 5:00pm, Central

Resource_Description: TCEQ Certified Map Layers

Distribution_Liability: Although these data have been processed successfully on a computer system at the Texas Commission on Environmental Quality, no warranty expressed or implied is made by the TCEQ regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Shape File

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: http://www.tceq.state.tx.us/gis/

Access_Instructions: Local area network

Available_Time_Period: Immediate

Metadata_Date: 20011206

Metadata_Review_Date: 20011206

Metadata_Future_Review_Date: 20020801

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Texas Commission on Environmental Quality
Contact_Person: GIS Team

Contact_Position:

Contact_Address:

Address_Type: Mailing Address
Address: MC-197, P.O. Box 13087
City: Austin
State_or_Province: Texas
Postal_Code: 78711-3087
Country: U.S.A.

Contact_Voice_Telephone: (512) 239-0859
Contact_Facsimile_Telephone: (512) 239-0888
Contact_Electronic_Mail_Address: gsmithha@tceq.texas.gov
Hours_of_Service: 8:00am - 5:00pm, Central, Monday - Thursday

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: Local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Extensions:

Online_Linkage: http://www.esri.com/metadata/esriprof80.html

Profile_Name: ESRI Metadata Profile