1. Lower Laguna Madre Water Quality
Tim Cawthon Nonpoint Source Program Texas Commission on Environmental Quality

5. Coordinated Monitoring
Coordinated Monitoring Schedule -
Coordinated Monitoring Meetings held annually by each Clean Rivers Program Partner
IBWC – Rio Grande River Basin
Nueces River Authority – Nueces-Rio Grande Coastal Basin
(Basin includes Brownsville Ship Channel, Lower Laguna Madre, Arroyo Colorado, and areas north)

6. Basin Highlights and Summary Reports
Nueces River Authority -
IBWC -
Basin Summary – Every 5 Years
Basin Highlights – Annually

8. Texas Surface Water Quality Standards

9. Texas Surface Water Quality Standards
Proposed every 3 years
Standards consist of two parts:
Uses, or purposes
Presumed vs Designated
Criteria, or indicators to determine use attainment
Five general categories:
Aquatic life
Contact recreation
Public water supply
Fish consumption
General uses

10. Examples
mg/L

11. Laguna Madre Segment 2491 Split
Laguna Madre Segment 2491 is currently proposed to be split into the Upper and Lower segments in the update to the Texas Surface Water Quality Standards.
Hasn’t been officially approved by EPA yet
Saltillo Flats

12. TCEQ Assessment

13. Texas Integrated Report
Assessment of water bodies every 2 years
7 year rolling average of data
Identify impaired water bodies
 303 (d) List of Impaired Waters
Categories
5a – TMDL, watershed action plan
5b – Evaluate water quality standard
5c – Additional data needed

14. Impaired Segments
TCEQ Integrated Report -
“Index of Water Quality Impairments” is a comprehensive list of all impairments by Assessment Unit (AU).*
Segment
Assessment Unit
4a = TMDL
*303(d) list isn’t a comprehensive list of impairments because segments with approved TMDLs are removed.

15. SWQM Viewer
bac411a b70bbe778
Monitoring stations (Includes Inactive Stations)
Segments (No Assessment Units)

16. Stations Used
Water Bodies Evaluated Report - pdf

17. Assessment Results
Assessment by Basin -

18. 2014 Integrated Report Water Quality Assessment

19. 2014 Integrated Report Water Quality Assessment
Laguna Madre (2491)*
2014 Integrated Report Water Quality Assessment
Low Dissolved Oxygen Chlorophyll-a
Low Dissolved Oxygen
Bacteria Ammonia
Nitrate
Chlorophyll-a
Low Dissolved Oxygen
Port Isabel Fishing Harbor (2494A)
Bacteria
Brownsville Ship Channel (2494)
Bacteria
Low Dissolved Oxygen
*Segment 2491 is currently proposed to be split into the Upper and Lower segments in the 2014 update to the Texas Surface Water Quality Standards. Lower Segment will be the bay south of the Saltillo Flats.

20. 2202 (AUs 04 – 01) 2201 (AU 05) 2201 (AU 04) 2201 (AUs 03 – 01)
Bacteria
DDE, Mercury, and PCBs in edible Tissue
Nitrate
Chlorophyll-a
Total Phosphorus
Bacteria
Low Dissolved Oxygen
DDE, Mercury, and PCBs in edible Tissue
Chlorophyll-a
Nitrate
Bacteria
Low Dissolved Oxygen
Chlorophyll-a
Nitrate
Bacteria
Chlorophyll-a
Nitrate

22. Downloading and Viewing Data

23. Water Quality Data Sources
SWQMIS Public Viewer -
STORET –
USGS WQ -
Stream Team -
Beach Watch -
CWQM Stations -

24. SWQMIS Public Viewer
Download the Pipe delimited file 1 2

25. CRP Data Tool 1 2 3 4 x 5 6 7

26. Opening Pipe Delimited file in Excel
Open Microsoft Excel.
Select the Data tab.
Click From Text.
Browse to the text file and select it.
Click Import. The Text Import Wizard will begin.
Select Delimited and click Next.
Uncheck Tab and select Other.
Enter in pipe symbol | . Hold shift key and press button above Enter key.
Click Next. Click Finish. Click Ok
Data can now be viewed in Excel

28. Questions?