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Continuous Hydrologic Modeling For Analyzing The Effects Of Drought On The Lower Colorado River In Texas
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Book Synopsis CONTINUOUS HYDROLOGIC MODELING FOR ANALYZING THE EFFECTS OF DROUGHT ON THE LOWER COLORADO RIVER IN TEXAS by :
Download or read book CONTINUOUS HYDROLOGIC MODELING FOR ANALYZING THE EFFECTS OF DROUGHT ON THE LOWER COLORADO RIVER IN TEXAS written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : A physically based hydrologic model, the HEC-Hydrologic Modeling System (HMS), developed by the U.S. Army Corps of Engineers, has been parameterized using the Soil Moisture Accounting (SMA) algorithm, calibrated, and validated for the Lake Travis and Lake Lyndon B. Johnson (LBJ) contributing basins in central Texas. The basins are divided into a total of 15 sub-basins, and HEC-HMS with the SMA algorithm represents each sub-basin with five water storage layers involving twelve parameters--surface depression storage, canopy interception storage, upper zone soil storage, tension zone soil storage, infiltration rate, and soil percolation rate, along with storage depths, storage coefficients and percolation rates for one shallow and one deep groundwater layer. The first six parameters and the percolation rate for the interflow were estimated objectively using a combination of the National Land Cover Database 2011 (NLCD 2011) and Soil Survey Geographic Database (SSURGO). The next four parameters were estimated based on analysis of historical streamflow records, and the last parameter was determined through model calibration. The parameter analysis shows that the tension zone storage, interflow storage coefficient and the baseflow percolation rate are the most sensitive parameters for this watershed model. Comparison of simulated and observed streamflows showed that the estimated parameters can be used with meteorological data to simulate flows into the Highland Lakes system in central Texas. The results of the statistical analysis indicate that the simulated flows and observed flows are reasonably well correlated. The model performance is rated as good to very good for all the metrics. The PBIAS coefficient is 9.6 and the Nash-Sutcliffe efficiency value is 0.71 for the entire simulation period, 2004-2016. The model performance can potentially be improved through further calibration and by using the hourly climatic input data instead of daily data. xi In future work, the validated HEC-HMS model can be employed with seasonal climate forecasts and under long-range land-use and climate projections. In addition, radar-based precipitation data can be used to represent the climatic variability on a grid-based scale.
Book Synopsis Annual Compilation and Analysis of Hydrologic Data for Deep Creek, Colorado River Basin, Texas by :
Download or read book Annual Compilation and Analysis of Hydrologic Data for Deep Creek, Colorado River Basin, Texas written by and published by . This book was released on 1967 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Compilation and Analysis of Hydrologic Data for Mukewater Creek, Colorado River Basin, Texas by :
Download or read book Annual Compilation and Analysis of Hydrologic Data for Mukewater Creek, Colorado River Basin, Texas written by and published by . This book was released on 1968 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Drought in the Colorado River Basin by : Harold Edgar Thomas
Download or read book Effects of Drought in the Colorado River Basin written by Harold Edgar Thomas and published by . This book was released on 1963 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Summary of Effects of the Drought in the Southwest by : Harold Edger Thomas
Download or read book General Summary of Effects of the Drought in the Southwest written by Harold Edger Thomas and published by . This book was released on 1963 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis River/Reservoir System Water Availability Modeling Support for Drought Management by : Ankit Bista
Download or read book River/Reservoir System Water Availability Modeling Support for Drought Management written by Ankit Bista and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Water Availability Modeling (WAM) System maintained by the Texas Commission on Environmental Quality (TCEQ) consists of the Water Rights Analysis Package (WRAP) and datasets for all the river basins of Texas. The modeling system is used to support long-term regional and statewide planning and evaluation of water right permit applications. The research is designed to explore and improve WRAP/WAM capabilities as a decision-support tool for drought management. The WRAP/WAM model for the Colorado River Basin is applied in this research in both long-term planning and short-term conditional reliability modeling (CRM) modes. A strategy using iterative long-term simulations is developed for modeling water management plans that combine interruptible and firm water supply commitments. The methodology is tested and demonstrated by application to the LCRA System. Improvements in water supply reliabilities provided by off-channel storage are also investigated in the simulation study. The research is designed to explore and improve modeling capabilities in general, not to support specific decisions regarding water management in this particular river basin. CRM features in WRAP provide short-term storage frequency and supply reliability analyses conditioned on preceding reservoir storage and can be employed as a decision-support tool for water management during drought or operational planning studies for preparing for future drought. The research explores alternative methods and combinations of options for performing various CRM tasks and develops several additional new options. Climate teleconnection patterns, drought indices, and flow persistence are investigated from the perspective of potential improvements to WRAP/WAM CRM capabilities. The literature regarding climate cycles and metrics for identifying these cycles is reviewed. Correlation analyses are performed to analyze the relationship between flows at selected sites on the Colorado River and various climate cycle indices. The correlations are generally found to be fairly weak. The Rapid Intervention Program (RIP) is designed for improving on-farm irrigation management strategies. A new interactive web interface tool being developed by other researchers at Texas A&M University, called the Irrigation Water-Use Efficiency Maximizer (IWEM), will link WRAP with RIP. WRAP CRM methods are tested and compared to determine the optimal combination of options for use with the IWEM platform. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155724
Book Synopsis General Effects of Drought on Water Resources of the Southwest by : Joseph Strong Gatewood
Download or read book General Effects of Drought on Water Resources of the Southwest written by Joseph Strong Gatewood and published by . This book was released on 1964 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrologic Data for Mukewater Creek, Colorado River Basin, Texas by :
Download or read book Hydrologic Data for Mukewater Creek, Colorado River Basin, Texas written by and published by . This book was released on 1967 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrological Drought by : Lena M. Tallaksen
Download or read book Hydrological Drought written by Lena M. Tallaksen and published by Gulf Professional Publishing. This book was released on 2004 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: The majority of the examples are taken from regions where the rivers run most of the year.
Book Synopsis Development of the Lower Colorado River of Texas by : Lower Colorado River Authority
Download or read book Development of the Lower Colorado River of Texas written by Lower Colorado River Authority and published by . This book was released on 1954* with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrologic Effects of Floodwater-retarding Structures on Garza-Little Elm Reservoir, Texas by : Clarence R. Gilbert
Download or read book Hydrologic Effects of Floodwater-retarding Structures on Garza-Little Elm Reservoir, Texas written by Clarence R. Gilbert and published by . This book was released on 1970 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Drought in the Rio Grande Basin by : Harold Edgar Thomas
Download or read book Effects of Drought in the Rio Grande Basin written by Harold Edgar Thomas and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Managing Water for Drought written by and published by DIANE Publishing. This book was released on with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Resources Data for Texas by : Geological Survey (U.S.). Water Resources Division
Download or read book Water Resources Data for Texas written by Geological Survey (U.S.). Water Resources Division and published by . This book was released on 1973 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mitigating Drought Through Weather Modification by :
Download or read book Mitigating Drought Through Weather Modification written by and published by . This book was released on 1982 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead: Appendices A-L by :
Download or read book Colorado River Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead: Appendices A-L written by and published by . This book was released on 2007 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
