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Summer 2009 - Guadalupe-Blanco River Authority

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Cow Creek GCD Gets Real-time MonitoringAfter months of planning, a real-time monitoring system wasimplemented for the Cow Creek Groundwater ConservationDistrict through a pilot project with the Texas Commission onEnvironmental Quality (TCEQ).Six well sites have been equipped with monitors for water depth,conductivity and temperature. The sites, selected primarily because oftheir proximity to thepumping centers in theCow Creek GCD servicearea, provide data thatwill allow Cow CreekGCD to determine what,if any, measures needto be taken to addressthe influence of surfacewater on groundwaterquality and if non-pointsource pollution isoccurring. This data setwill help them makemanagement decisionsrelated to desiredfuture conditions of the aquifer, drought management issues, andgroundwater availability issues.The TCEQ got involved in the continuous water quality monitoring toaddress local water quality issues, which might include managing waterresources, assessing water quality, and tracking implementation ofTotal Maximum Daily Loads (TMDLs) and watershed protection plans,”Richard Garcia, TCEQ’s Region 13 director, said.“The data will help the District implement more accurate droughttriggers and also determine water quality and quantity changes duringrainfall events,”explained MicahVoulgaris, Cow CreekGCD general manager.“The program,” headded, “should alsoprovide data that canbe used to calibratesome of the existingmodels of the aquifer.The more data theDistrict can collecton what is actuallyhappening in theaquifer, the more informed decisions it will be able to make about themanagement of the groundwater resources.”TCEQ staff members Garcia and Chuck Dvorsky, continuous waterquality monitoring network (CWQMN) coordinator, worked with thestaffs of Cow Creek GCD, the <strong>Guadalupe</strong>-<strong>Blanco</strong> <strong>River</strong> <strong>Authority</strong>7(GBRA), and the Texas Water Development Board (TWDB) to identifythe data needs and the ways to collect the data for Cow Creek GCD tomanage its underground water.“It was important to initiate this kind of project because of thesignificance of the Trinity Aquifer, and this type of monitoring system isneeded for aquifers throughout the state,” said Bill West, GBRA generalThe table below contains hourly averages for all the pollutants and meteorologicalconditions measured at Cordillera Ranch Well C775 for Monday, July 27, <strong>2009</strong>.manager, who led thepush for Cow CreekGCD to obtain the newmonitoring system.“With the exception ofthe Edwards Aquifer,there are not manyaquifers that haveelectronic monitoring.”Cow Creek staffwrote and submitteda proposal to TCEQ,which prompted TCEQto request a projectplan from Cow Creek.Upon approval, TCEQpurchased and installed the instrumentation at six wells at a total costof about $45,000. TWDB monitored the installation and checked thesystem. The system became operational by the end of March, and allsix Cow Creek GCD CWQMN well monitors are online and reportingdata to the LEADS database.Prior to the implementation of this electronic monitoring system,Cow Creek conducted manual monitoring.Tommy Hill, GBRA’s chief engineer, explained, “Every district needsmonitoring for anaccurate assessment ofwater availability, so theelectronic monitoringcan provide data in itsmost current form.”One of the goalsof this system is tomonitor water quality,West said, adding,“This project isimportant for GBRA inthat it provides areal-time look at potential impacts on the river level and how it mightaffect some of GBRA’s customer’s within Kendall County.”As an indication of just how committed GBRA is to this project andits success, GBRA’s Water Quality Department is providing the waterdata quality control component of the project, West said.The CAM sites may be viewed directly at the following links:http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=775http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=776http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=777http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=778http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=779http://www.tceq.state.tx.us/cgi-bin/compliance/monops/water_site_photo.pl?cams=780

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