Browsing Technical and Special Reports by Author "Gregory, L."
Now showing items 1-18 of 18
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Gregory, L.; Brown, M.; Skow, K.; Engling, A.; Wagner, K.; Berthold, A. (Texas Water Resources Institute, 2014)The State of Texas currently contains 568 water bodies considered impaired due to excessive pollutant loading. Of these, approximately 48% are impaired due to elevated levels of fecal indicator bacteria from animals, birds ...
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Martin, E.; Gentry, T.; Gregory, L.; Wagner, K. (Texas Water Resources Institute, 2014)The Attoyac Bayou, a sub-watershed within the Upper Neches River Watershed, extends approximately 82 miles through Rusk, Nacogdoches, San Augustine and Shelby counties before emptying into Sam Rayburn Reservoir. With several ...
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Boitnott, N.; Castilaw, A.; Gregory, L.; Wagner, K. (Texas Water Resources Institute, 2014)The Attoyac Bayou watershed is one of many rural watersheds included in the Texas Water Quality Inventory and 303(d) List as an impaired water body due to excessive E. coli levels. In many cases the assessed data in these ...
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Schwab,S.; McBroom, M; Gregory, L.; Blumenthal, B; Wagner, K.; Sims, B (Texas Water Resources Institute, 2014-05)
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Gregory, L.; Casarez, E.; Truesdale, J.; Di Giovanni, G.; Owen, T; Wolfe, J. (Texas Water Resources Institute, 2013-04-25)The Bacterial Source Tracking to Support the Development and Implementation of Watershed Protection Plans for the Lampasas and Leon Rivers project was developed to provide supplemental information to stakeholders engaged ...
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Gregory, L.; Casarez, E.; Truesdale, J.; Di Giovanni, G.; Owen, T.; Wolfe, J. (Texas Water Resources Institute, 2013-04-25)The Bacterial Source Tracking to Support the Development and Implementation of Watershed Protection Plans for the Lampasas and Leon Rivers project was developed to provide supplemental information to stakeholders engaged ...
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Gregory, L.; Brown, M.; Hein, K.; Skow, K.; Engling, A.; Wagner, K.; Berthold, A. (Texas Water Resources Institute, 2014)In the 2012 Texas Integrated Report and 303(d) List, approximately 48% of the 568 impaired water bodies were caused by high bacteria levels. Once a water body has been listed, the Clean Water Act requires action to be ...
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Wagner, K.; Brown, M.; Gregory, L.; Harmel, D.; Coufal, C.; Gentry, T. (Texas Water Resources Institute, 2013-12)
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Mukthar, S.; Rahman, S.; Gregory, L. (Texas Water Resources Institute, 2009-01)Two upper North Bosque River segments were designated as impaired in 1998 due to point source and nonpoint source (NPS) pollution of phosphorus (P) to these segments of the watershed. As a result, two Total Maximum Daily ...
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Delaune, P.; Scanlon, B.; Reedy, R.; Schwartz, R.; Baumhardt, L.; Gregory, L. (Texas Water Resources Institute, 2013)Nitrogen in groundwater, more specifically nitrate, is common in certain areas and is often associated with agricultural production or urban areas underlain by coarse soils. While the presence of nitrates in groundwater ...
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Gregory, L.; Sheng, Z.; Hassan, A.; McDonald, A.; Porter, A. (Texas Water Resources Institute, 2014)
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Gregory, L.; Porter, A.; Knutson, A.; Muegge, M. (Texas Water Resources Institute, 2013)The Pecos River Watershed Protection Plan (WPP) was developed by landowners and completed in October 2008. In November 2009, the project entitled “Implementing the Pecos River Watershed Protection Plan through Invasive ...
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Borel, K.; Gregory, L.; Karthikeyan, R. (Texas Water Resources Institute, 2012-12)A popular approach currently applied in the development of Watershed Protection Plans (WPP) and Total Maximum Daily Loads (TMDL) is to identify whether point or non-point sources are the primary pollutant contributors in ...
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Borel, K.; Karth, R.; Gregory, L. (Texas Water Resources Institute, 2012-12)The Spatially Explicit Load Enrichment Calculation Tool (SELECT) methodology developed by Biological and Agricultural Engineering Department and Spatial Sciences Laboratory at Texas A&M University was used to independently ...
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Gregory, L.; Hauck, L.; Blumenthal, B.; Brown, M.; Porter, A. (Texas Water Resources Institute, 2013)Implementation of the Pecos River Watershed Protection Plan (WPP) began in November 2009 upon acceptance of the WPP by EPA. The primary goals of implementing the plan are to improve the health of the Pecos River watershed ...
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DiGiovanni, G.; Casarez, E.; Gentry, T.; Martin, E.; Gregory, L.; Wagner, K. (Texas Water Resources Institute, 2013)The project titled Support Analytical Infrastructure and Further Development of a Statewide Bacterial Source Tracking Library funded by the Texas State Soil and Water Conservation Board was established to provide needed ...
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Gregory, L.; Knutson, A.; Edgerton, E.; Mukherjee, A.; Baumann, P.; Masser, M.; Wagner, K. (Texas Water Resources Institute, 2014)Giant salvinia, a highly invasive aquatic fern native to South America, poses a serious threat to Texas’ waters and has done so since its discovery in the state in the 1990s. If left unmanaged, giant salvinia can cause a ...
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Gregory, L.; Dyer, P. (Texas Water Resources Institute, 2013-08)The “Water Quality Monitoring in the Buck Creek Watershed and Facilitation of Buck Creek Watershed Partnership” project was developed to continue water quality monitoring on Buck Creek and to continue to engage watershed ...