This list of links replaces the SWQM Supplementary Information Guide published in past years. Included are links to references and information sources both within the TCEQ and at other agencies.

• Analytical Methods
• Biological
• Boat Access
• Contacts
• Endangered Species in Texas 
• Fish Advisories and Fish Kills
• Flow Gages and Reservoir Levels
• Water Quality
  • Texas Water-Quality Inventory
  • Water-Quality Criteria and Screening Levels
  • Water-Quality Data and Maps
• Weather Information

Analytical Methods

• 40CFR Chapter I—Environmental Protection Agency
• • See Subchapter D (Water Programs), Part 136, Guidelines Establishing Test Procedures for the Analysis of Pollutants
• Ambient Water Reporting Limits
  • Complete List
  • An Explanation
• National Environmental Methods Index (NEMI)
• U.S. EPA Analytical Methods Index

Biological

• Biological Indicators of Watershed Health (EPA)
• Coastal Fish Identification Guide (TPWD—Coastal Fisheries)
• Fish Species Common to Major Texas River Basins (PDF) (Help with PDF)
• Fish Species in Texas Checklist (TPWD)
• Freshwater Fish Identification Guide (TPWD—Inland Fisheries)
• Guide to Freshwater Ecology (PDF) (Help with PDF)
• Nonindigenous Aquatic Species Database (USGS)
• Rapid Bioassessment Protocols for Use in Streams and Wadeable Rivers: Periphyton, Benthic Macroinvertebrates, and Fish, second edition, EPA document 841-B-99-002
• Searchable Database of Fish (worldwide)
• Texas Natural History Collection: Ichthyology (UT–Austin). Links to a database of Texas and North American fish species.
• Volunteer Stream Monitoring: A Methods Manual, EPA document 841-B-97-003
• Water Related Information (EPA)

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Boat Access

• Public Boat Access
  • Lakes (TPWD)
  • Rivers (TPWD)

Contacts

• Clean Rivers Program: Planning Agencies
• Coastal Bend Bays and Estuaries Program
• Galveston Bay Estuary Program (TAMU–Galveston)
• TCEQ Regional Office Contacts
• TCEQ Water Data Management Contacts
• TCEQ Surface Water Quality Monitoring Program Contacts
  • Listed by topic (PDF) (Help with PDF)

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Fish Advisories and Fish Kills

• Golden Algae (Prymnesium parvum)—Inland (TPWD)
• Fish Consumption Advisories / Aquatic Life Closures (TDSHS Seafood Safety Division)
• Fish Kill Inventory (TPWD Kills and Spills Team)
• Red Tide—Coastal (TPWD)

Flow Gages and Reservoir Levels

• Hydrologic and Gaging Data (USACE)
• Real-Time Flow Data for Texas (USGS)
• Rio Grande Flow Conditions (IBWC)
• Texas River Guide—Texas River/Stream Flow Gages (TPWD)

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Water Quality

Texas Water-Quality Inventory

• Total Maximum Daily Load Program and Projects
• Texas Water Quality Inventory and 303(d) List

Water-Quality Criteria and Screening Levels

• Texas Surface Water Quality Standards
• Texas Surface Water Quality—What Is It, and How Is It Measured?
  A general overview of the Texas Water Quality Inventory and 303(d) List (PDF) (Help with PDF)
• Texas Water Code See Subtitle D, Chapter 26—Water Quality Control

Water-Quality Data and Maps

• Ambient Water and Sediment Toxicity Data (EPA Region 6 TOXNET Program)
• Data Resources: TCEQ real-time data, interactive data viewer, maps, station information, and related data from other agencies.
  • Atlas of Texas Surface Waters
  • Data and Map Resources: station information, parameter codes, data downloads, the Statewide Basin Management Schedule, and an index of available Geographic Information System layers

Weather Information

• Weather Information (NOAA—National Weather Service)

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