Hays County Monitoring Sites

Putting your cursor over the stream site number on the map below will generate a picture of the site (if available). Clicking on the site number will take you down the page to a table of sites with locations, parameters and frequency of analysis. Below the table is a legend defining the abbreviations used in the table.

TCEQ Station ID #12672TCEQ Station ID #12672: Upper San Marcos River upstream of IH 35
TCEQ Station ID #12674TCEQ Station ID #12674: Cypress Creek at FM 12 at Wimberley
TCEQ Station ID #17406TCEQ Station ID #17406: Plum Creek at Plum Creek Road North of Uhland in Hays County

Guadalupe River Basin Surface Water Quality Monitoring Program
GBRA Monitoring Locations

TCEQ Station ID Description Latitude/ Longitude Parameters/ Frequency* Monitoring Types/By Historical Data
12672 Upper San Marcos River upstream of IH 35 29°52'31" / 97°55'54" C/Quarterly; F/Quarterly; BAC/Quarterly Fixed/GBRA PDF | Excel
12674 Cypress Creek at FM 12 at Wimberley 29°59'46" / 98°05'48" C/Quarterly; F/Quarterly; BAC/Quarterly; AC/Annual; RN/Annual; RB/Annual Fixed/GBRA PDF | Excel
17406 Plum Creek at Plum Creek Road North of Uhland in Hays County 29°57'36" / 97°48'00" C/Monthly; F/Monthly; BAC/Monthly; AC/Annual; RB/Annual; RN/Annual Fixed/GBRA PDF | Excel

Guadalupe River Basin Surface Water Quality Monitoring Program
TCEQ Monitoring Locations

TCEQ Station ID Description Latitude/ Longitude Parameters/ Frequency* Monitoring Types/By Historical Data
12628 Lower San Marcos River at county road immediately below confluence of San Marcos and Blanco Rivers 29°51'25" / 97°53'46" C/Quarterly; BAC/Quarterly Fixed/TCEQ** TCEQ
12631 Blanco River at Hays CR 295 East of San Marcos 29°52'12" / 97°55'12" C/Quarterly; F/Quarterly; BAC/Quarterly Fixed/TCEQ** TCEQ
12660 Blanco River at low water crossing at CR 174 29°59'02" / 98°03'07" No monitoring scheduled for 2006 Fixed/TCEQ** TCEQ

Guadalupe River Basin Surface Water Quality Monitoring Program
Wimberley Valley Watershed Monitoring Locations

TCEQ Station ID Description Latitude/ Longitude Parameters/ Frequency* Monitoring Types/By Historical Data
12660 Blanco River at low water crossing at CR 174 29°59'02" / 98°03'07" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12661 Blanco River at FM12 29°59'24" / 98°05'24" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12663 Blanco River at Pioneer Town 7A 29°58'48" / 98°06'36" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12673 Cypress Creek at confluence with the Blanco River 29°59'24" / 98°05'24" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12675 Cypress Creek at Blue Hole Campground 30°00'10" / 98°05'27" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12676 Cypress Creek at FM 12, one mile north of Wimberley 30°00'36" / 98°06'00" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct) Fixed/WVWA No Historical Data Available
12677 Cypress Creek At Jacob's Well 30°01'48" / 98°07'12" C/8x (Mar-Oct); F/8x (Mar-Oct); BAC/8x (Mar-Oct); D024/Monthly Fixed/WVWA No Historical Data Available

** The ability to look up data for a specific Station ID on the TCEQ website is no longer available. However, by using the TCEQ link above, it is possible to download text files for a segment; so if you know the segment, you can scroll down to it and select it for downloading. The data download query requires a great deal of knowledge of not only converting and combining text files, but also for understanding and looking up the codes in the Data Management Reference Guide.

Legend

The C symbol represents the following parameters and their TCEQ codes: 00010, Temperature, Water (Centigrade); 00094 Conductivity, Field (mmhos/cm @ 25C); 00300 Oxygen, Dissolved (mg/L); 00400 pH (standard units); 00631 Nitrate/Nitrite-Nitrogen (mg/L as N); 00665 Total Phosphorus (mg/L as P); 00530 Solids, Total Suspended (mg/L); 82079 Turbidity (NTU); 00945 Sulfate (mg/L); 00940 Chloride (mg/L); 32211 Chlorophyll-a (mg/L); 00900 Total Hardness (mg/L); and 31648 E. coli (#/100 mL).

The F symbol means that a flow measurement will be provided. When possible, this information will be derived from U.S. Geological stream gages; at some sites, the proximity of a hydroelectric generating facility allows the calculation of flow based upon power generated; at the remainder of the sites field measurements will be made by GBRA Lab personnel or UGRA personnel.

The M symbol denotes metals. All M samples will be collected by the GBRA. The dissolved metals to be analyzed for are 01106 Aluminum (mg/L as Al); 01090 Zinc (mg/L as Zn); 01000 Arsenic (mg/L as As); 00915 Calcium (mg/L as Ca); 01025 Cadmium (mg/L as Cd); 00925 Magnesium (mg/L as Mg); 46570 Hardness, calc, (mg/L as CaCO3); 01005 Barium (mg/L as Ba); 01030 Chromium (mg/L as Cr); 01040 Copper (mg/L as Cu); 01046 Iron (mg/L as Fe); 01049 Lead (mg/L as Pb); 01056 Manganese (mg/L as Mn); 01065 Nickel (mg/L as Ni); 01060 Molybdenum (mg/L as Mo); 01145 Selenium (mg/L as Se); 71890 Mercury, total (mg/L as Hg); and 01075 Silver (mg/L as Ag).

AC means Aquatic Commun-Habitat.

RN means Routine Nekton.

N/A means not active. The station is not being monitored.

RB means Routine Benthics.

FT means Fish Tissue.

BAC means TSWQS Bacteria sampling.

O means organics in water.

D024 means dissolved oxygen measurements over a 24 hour period.

© 1998 Guadalupe-Blanco River Authority

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