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Projects

The Environmental Sciences Department regularly works on small or short term (less than 5 years) water quality, pollution investigations or scientific studies. When studies are completed, a report may be created, published or put on the Antonio River Authority (River Authority) web site. Often these projects are funded by tax dollars or grants, but they may also be funded through private sources.

Streams within the San Antonio River (SAR) watershed are influenced by non-point sources during storm events. The San Antonio River Authority (River Authority) is challenged with the task of defining stream water quality within the SAR watershed during storm events. To accomplish this, the River Authority is incorporating the latest innovative procedures to collect water quality data by implementing permanent long-term automated sampling stations designed to collect water samples under storm water conditions. Automated sampling procedures can collect water quality samples throughout the duration of a storm event, making the collection effort more economically feasible and safer without endangering field personnel during hazardous storm conditions.

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The San Pedro Creek flood diversion tunnel is approximately 6,000 feet long with a finished inside diameter of 24 feet, 4 inches lined with precast concrete segments. It commences near the Interstate 35-Interstate 10 interchange, between N. Santa Rosa Street on the west and Camaron Street on the east, where an intake approach channel is constructed (See Figure 2 for route). The tunnel inlet shaft is constructed downstream of the approach channel and is 24 feet by 4 inches in diameter dropping approximately 119 feet to the tunnel invert.

Under contract to the National Park Service, biologists of the San Antonio River Authority Environmental Services Department conducted a series of fish collections at representative sites along watercourses in or adjacent to the San Antonio Missions National Historical Park properties in Bexar and Wilson counties, Texas . Fishes were collected from October 2003 to September 2004 at five sites along the San Antonio River and at three tributary sites utilizing electro-fishing and seining techniques. Fish community composition, habitat and water quality were evaluated.

The Texas Department of Health has issued a fish consumption advisory stating that the consumption of fish from Leon Creek may pose a threat to human health due to polychlorinated biphenyls (PCBs). This advisory extends from Old U.S. Highway 90 Bridge downstream to the Loop 410 bridge in South Bexar County. Previous

From 2002 through 2009, faculty and students from the Department of Wildlife and Fisheries Sciences at Texas A&M University conducted field, laboratory, and modeling studies to investigate the diet, behavior, and habitat of the whooping crane (Grus americana) at Aransas National Wildlife Refuge (ANWR), Texas. During this period the research team also conducted complementary studies of environmental conditions in San Antonio Bay.

This project assessed the abundance of Guadalupe Bass Micropterus treculi in the San Antonio River (SAR) watershed and collect, tag and reintroduce the species to a restored reach of the SAR where the species had been extirpated. An assessment of Guadalupe bass in the SAR watershed was completed to gather genetic and baseline abundance information.

The Texas Instream Flow Program (TIFP), jointly administered by Texas Commission on Environmental Quality, Texas Parks and Wildlife Department, and Texas Water Development Board, has initiated a study of instream flows necessary to support a sound ecological environment in the Lower San Antonio River. The TIFP seeks to incorporate stakeholder input, insight, and concerns while conducting this study. With the assistance of the San Antonio River Authority, initial stakeholder meetings were held in February 2005.