CRWR Online Reports
Permanent URI for this collectionhttps://hdl.handle.net/10850/538
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Item Abstract floodplain visualization on TINs(Center for Research in Water Resources, University of Texas at Austin, 2010-01-04T19:17:52Z) Azagra, Esteban; Olivera, Francisco; Maidment, David R.Item Addressing water availability and climate change issues in the Cordillera Blanca, Peru through technical analysis and community building strategies(Center for Research in Water Resources, University of Texas at Austin, 2011-04-14) Read, Laura K.; McKinney, Daene C.Accelerated tropical glacial melt on the order of 15-18 meters per year since the 1980’s in Peru’s Cordillera Blanca region is alarming rural communities and urban authorities, causing them to seek technical support for risk management and adaptation actions. Melting glaciers coupled with changing seasonal rainfall patterns has left many rural communities in the upper Rio Santa basin lacking sufficient fresh water supply to support livestock, irrigation and human consumption. In response to these concerns, a Water Evaluation And Planning (WEAP) model was created by the Stockholm Environmental Institute for simulating glacial melt and flow in the Santa River. Through input parameters of climate, glacial runoff, water use, crop acreage, soil type and groundwater interactions, WEAP has the flexibility to model scenarios for different operation schemes. These schemes allow users to determine the most effective ways to regulate their resources and explore adaptation actions (e.g. altering farming practices and building reservoirs) for future planning. This project improved the existing model by including observed water demand data for irrigation, and evaluating the Climate Forecast System Reanalysis (CFSR) dataset to serve as a potential source for filling gaps in the historic climate record. These improvements added robustness to the model and correlated well with historic stream flow at La Balsa (R2 = 0.78 , Nash = 0.68). Two scenarios were explored where (1) a 50% reduction in potato crop was replaced with maize for each sub-basin, and (2) a 10% reduction in precipitation was applied over the upper basin. Results show that the WEAP model is sensitive to changes in crop type and rainfall at the sub-basin scale, an encouraging finding for future exploration. This investigation enables communities to base future decisions on technical evidence and provides a basis for educating citizens on the importance of evaluating their available resources under climate change projections.Item An algorithm to delineate coastal watersheds for TMDL development(Center for Research in Water Resources, University of Texas at Austin, 2010-01-15T17:11:05Z) Samuels, Victoria Ann; Maidment, David R.Item An analysis of a methodology for generating watershed parameters using GIS(Center for Research in Water Resources, University of Texas at Austin, 2010-01-13T19:05:50Z) Mason, David; Maidment, David R.Item Analysis of Pedernales River and water quality: report to the Lower Colorado River Authority(Center for Research in Water Resources, University of Texas at Austin, 2009-12-08T19:00:00Z) Barrett, Michael E.Item An analysis of volunteer water quality data(Center for Research in Water Resources, University of Texas at Austin, 2009-12-08T18:59:26Z) Kaough, Charles; Maidment, David R.Item Approaches to continental scale river flow routing(Center for Research in Water Resources, University of Texas at Austin, 2010-01-11T16:24:52Z) Asante, Kwabena O.; Maidment, David R.; Famiglietti, James S.; Olivera, FranciscoItem Aral Sea water rights(Center for Research in Water Resources, University of Texas at Austin, 2009-12-08T18:58:49Z) Akmansoy, Sandra; McKinney, Daene C.Item Arc Hydro data model for Ethiopian watersheds(Center for Research in Water Resources, University of Texas at Austin, 2010-02-24T19:21:29Z) Asamenaw, Seyoum Ayele; McKinney, Daene C.Item Arc Hydro Developments for the Lower Colorado River Basin(Center for Research in Water Resources, University of Texas at Austin, 2010-02-22T17:29:40Z) Obenour, Daniel R.; Maidment, David R.Item ArcBASINS: a GIS model for the BASINS database(Center for Research in Water Resources, University of Texas at Austin, 2010-02-05T18:57:10Z) Schneider, Kristina AntoniaItem ArcGIS and HSPF model development(Center for Research in Water Resources, University of Texas at Austin, 2010-02-24T19:22:41Z) Johnson, Nathan William; Maidment, David R.; Katz, Lynn E.Item Assessing the impact of climate change on water resources for the Edwards Aquifer(Center for Research in Water Resources, University of Texas at Austin, 2009-12-08T22:33:31Z) Martinez, Kris Lawrence; Maidment, David R.Item Assessment of hydrologic alteration software(Center for Research in Water Resources, University of Texas at Austin, 2010-03-01T21:56:17Z) Hersh, Eric S.; Maidment, David R.Item Bacterial loadings watershed model in Copano Bay(Center for Research in Water Resources, University of Texas at Austin, 2010-03-01T21:41:25Z) Gibson, Carrie Jo; Maidment, David R.; Kirisits, Mary JoItem Bathymetric survey of Imja Lake, Nepal in 2012(Center for Research in Water Resources, University of Texas at Austin, 2013-03-15) Somos-Valenzuela, Marcelo; McKinney, Daene C.; Byers, Alton C.; Rounce, David R.Imja Lake is one of the most studied lakes in the Himalaya as well as one of the most rapidly evolving glacial lakes in Nepal. Many researchers have studied the lake and the potential of a glacier lake outburst flood from the lake. One of the important factors in assessing the outburst flood risk is the volume that could be released in the flood and good bathymetric data is necessary to estimate that value. This work reports on the 2012 bathymetric survey of Imja Lake and the rate of expansion that has been observed in the lake over the last two decades, since 1992. The survey was somewhat hampered by the extensive iceberg coverage of the lake in September 2012, but a good estimate of the bottom bathymetry and the current volume was obtained. When compared to previous surveys, it is very clear that the lake bottom has continued to deepen as the ice beneath the lake has melted. The average depth has increased by 62% since 2002 and continues to increase at a rate of 1.8 m/yr. The maximum depth has increased 28% since 2002 and is increasing currently at a rate of 5.8 m/yr. Perhaps more important in terms of glacier lake outburst flood risk is the continued rapid areal expansion of the lake which has expanded 41% since 2002 and is growing at a rate of 0.02 km2/yr. This expansion has resulted in an additional 6 million m3 of water for an outburst flood event, and increasing the maximum possible flood volume to 36.3 million m3 a 73% increase from what was calculated using 2002 data.Item Building the foundation for environmental risk assessment at the Marcus Hook Refinery using geographic information systems(Center for Research in Water Resources, University of Texas at Austin, 2010-01-04T18:03:46Z) Romanek, Andrew Paul; Wilson, Lesley Hay; Maidment, David R.Item Characteristics of composts: moisture holding and water quality improvement(Center for Research in Water Resources, University of Texas at Austin, 2010-02-15T17:59:17Z) Kirchoff, Christine J.; Malina, Joseph F.; Barrett, Michael E.Item Characterization of highway runoff in the Austin, Texas area(Center for Research in Water Resources, University of Texas at Austin, 2009-11-30T21:38:23Z) Barrett, Michael E.; Malina, Joseph F.; Charbeneau, Randall J.; Ward, George H.Item Characterization of stormwater runoff from a bridge deck and approach highway, effects of receiving water quality in Austin, Texas(Center for Research in Water Resources, University of Texas at Austin, 2010-02-24T20:04:16Z) Malina, Joseph F.; Linkous, Blaine W.; Joshi, Tejashri S.; Barrett, Michael E.