Download or read book Modeling the Impacts of Climate Change on Hydrology and Agricultural Pollutant Runoff in California s Central Valley written by Darren L. Ficklin and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Soil and Water Assessment Tool (SWAT) and HYDRUS were used to assess the impact of climate change on the hydrologic cycle (streamflow, surface runoff, groundwater recharge, evapotranspiration, and irrigation water use) and agricultural pollutant runoff (sediment, nitrate, phosphorus, chlorpyrifos, and diazinon) in the Sacramento and San Joaquin River watersheds in California's Central Valley. Five separate studies were constructed. For the first three studies, hydrological responses were modeled in the San Joaquin River watershed using variations of atmospheric CO2 (550 and 970 ppm), temperature (+1.1 and +6.4°C), and precipitation (0%, ±10%, and ±20%) based on Intergovernmental Panel on Climate Change projections. The fourth study used a calibration and an uncertainty analysis technique for the calibration of the Sacramento River watershed. This study confirmed that SWAT was able to capture the large amount of uncertainty within the Sacramento River watershed and successfully simulate streamflow, sediment, nitrate, chlorpyrifos and diazinon loads. The final study used a novel stochastic climate change analysis technique to bracket the 95% confidence interval of potential climate changes. For all studies, increases in precipitation generally changed the hydrological cycle and agricultural runoff proportionally, where increases in precipitation resulted in increases in surface runoff and thus agricultural runoff and vice-versa. Also, for all studies, increasing temperature caused a temporal shift in plant growth patterns and redistributed evapotranspiration and irrigation water demand earlier in the year. Increasing atmospheric CO2 resulted in watershed-wide decreases in evapotranspiration, therefore increasing water yield and streamflow while concurrently decreasing irrigation water use. This research improves the understanding between climate change and hydrology and agricultural pollutant runoff within the Central Valley of California. Theses climate change analyses may be used by water resource managers to evaluate the potential effects of climate change.
Download or read book Managing California s Water written by Ellen Hanak and published by Public Policy Instit. of CA. This book was released on 2011 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change Impacts on Water for Agriculture in California written by and published by . This book was released on 2006 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global climate change has the potential to dramatically alter hydrologic conditions in California by changing the spatial and temporal patterns of snow accumulation and snow melt. The water management infrastructure in California has been designed and is operated in accordance with historic hydrologic patterns. Understanding if and how this infrastructure can be managed in the face of global climate change in order to meet the array of vital water management objectives for the system is a critical research question addressed in part by this study. Here an application of the Water Evaluation and Planning (WEAP) system, developed by the Stockholm Environment Institute, is presented for California's Sacramento River Basin. WEAP is an integrated hydrology and water resources systems model that allows for assessment of climate change impact and adaptation in the water sector based solely on future climate time series. The model is used to evaluate the impact of four future climate scenarios on agricultural water management in the region, and to investigate whether water management adaptation could reduce potential impacts.
Download or read book Sustainable Water and Environmental Management in the California Bay Delta written by National Research Council and published by National Academies Press. This book was released on 2012-10-01 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensively modified over the last century and a half, California's San Francisco Bay Delta Estuary remains biologically diverse and functions as a central element in California's water supply system. Uncertainties about the future, actions taken under the federal Endangered Species Act (ESA) and companion California statues, and lawsuits have led to conflict concerning the timing and amount of water that can be diverted from the Delta for agriculture, municipal, and industrial purposes and concerning how much water is needed to protect the Delta ecosystem and its component species. Sustainable Water and Environmental Management in the California Bay-Delta focuses on scientific questions, assumptions, and conclusions underlying water-management alternatives and reviews the initial public draft of the Bay Delta Conservation Plan in terms of adequacy of its use of science and adaptive management. In addition, this report identifies the factors that may be contributing to the decline of federally listed species, recommend future water-supple and delivery options that reflect proper consideration of climate change and compatibility with objectives of maintaining a sustainable Bay-Delta ecosystem, advises what degree of restoration of the Delta system is likely to be attainable, and provides metrics that can be used by resource managers to measure progress toward restoration goals.
Download or read book Climate Change Impacts on Water Supply and Agricultural Water Management in California s Western San Joaquin Valley and Potential Adaptation Strategies written by and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change Impacts Upon Agriculture and Resources written by Daniel J. Dudek and published by . This book was released on 1988 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change in the Central Valley written by Pradnya Satish Khimsara and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The climate of a region contributes to every element of ecology, economy and well being of that region. Thus, climate data is a vital input in formulating various models such as simulating atmospheric-land hydrologic processes for flood management purposes, climate change impact studies and so on. Over the years, General Circulation models have been developed to simulate the Earth's climate. Various such models have been run for futuristic simulations at a global scale to study the change in climate over the coming century. These models have a coarse grid resolution for the atmospheric variables. However, for smaller regions, the simulated atmospheric data has to be downscaled to a more perceivable grid resolution for interpretation of shifts in trends. This thesis uses the fifth generation PSU/NCAR mesoscale model for downscaling to a finer resolution such future atmospheric data, focusing on three stations along the Sacramento River. These datasets are obtained from the GCM's and are based on three realizations of the A2 family from the Special Reports on emissions scenarios (SRES). The downscaled data is then analyzed for the three stations - Butte, Redding and Sacramento in the Central valley. Climate change trends of precipitation and temperature for these stations have been scrutinized in this study. The data has also been examined for intra-annual changes over three time frames along the century. The results exhibit consistent change at all three stations with the temperature gradients slowly rising by about a degree towards the mid of the century and then steepening to a rise of a cumulative four degrees by the end of the century. There is also a notable rise in the precipitation towards the end of the century. Though the intra-annual changes for temperatures are consistent, there is a shift in the precipitation patterns. Towards the end of the century there is an increase in the number of wet months occurring in the annual rainfall cycle.
Download or read book Potential Effects of Climate Change on Streamflow Eastern and Western Slopes of the Sierra Nevada California and Nevada written by Anne E. Jeton and published by . This book was released on 1996 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Climate Change Impacts on River Basin Management written by Saeid Eslamian and published by CRC Press. This book was released on 2024-08-29 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change not only involves rising temperatures but it can also alter the hydro-meteorological parameters of a region and the corresponding changes emerging in the various biotic or abiotic environmental features. One of the results of climate change has been the impact on the sediment yield and its transport. These changes have implications for various other environmental components, particularly soils, water bodies, water quality, land productivity, sedimentation processes, glacier dynamics, and risk management strategies to name a few. This volume provides an overview of the fundamental processes and impacts of climate change on river basin management and examines issues related to soil erosion, sedimentation, and contaminants, as well as rainfall-runoff modeling and flood mitigation strategies. It also includes coverage of climate change fundamentals as well as chapters on related global treaties and policies.
Download or read book Managing to End Groundwater Overdraft in California s Central Valley with Climate Change written by Ian Buck and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Several water management cases with climate change are modeled to assess the effects of ending long-term groundwater overdraft in the Central Valley using the California Value Integrated Network (CALVIN) model, a hydro-economic optimization model of California’s water system. CALVIN optimizes water management decision-making for the lowest net operating and water scarcity cost over an 82-year period of unimpaired inflows. Recent updates to the CALVIN model include, input hydrology, network representation, agricultural demand and shortage penalties, and hydropower improvements. Management cases evaluated include changes in outflow and inflow requirements for the Sacramento-San Joaquin Delta (Delta), and prohibiting long-term groundwater overdraft. Cases were analyzed over an 82-year modified historical record with a warmer, drier climate, and compared to historical hydrology results. A modelled warmer, drier climate reduces average inflows overall by about 28% and shifts stream flows towards winter and away from spring. Results show large water scarcities south of the Delta without Delta exports, especially for agriculture. Allowing for increased water transfers, Delta exports, conjunctive use, and water recycling and desalination reduces the water supply effects of groundwater overdraft and climate change.
Download or read book Modeling Climate Change Impacts on Water Resources for the Sacramento River Hydrologic Region written by Mauricio Meza-Pedraza and published by . This book was released on 2017 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Potential climate change impacts on water resources on the Sacramento River Basin (Basin) and their economic impacts on agriculture were evaluated in this study. The Water Evaluation and Planning (WEAP) software was used to develop a simulation model for the Basin. WEAP is a computer software used for integrated water resources planning that operates on the principles of water balance accounts. The model was applied to evaluate hydrologic implications of climate change scenarios by projecting future precipitation in the Basin for the period of 2016 to 2058 and estimate potential financial impacts on agriculture. Results indicates that extreme events such as extended drought conditions due to climate change can occur in the future. Model simulations revealed that the only county that could face an increase in financial losses in extreme events due to climate change within the Basin is El Dorado County. Financial losses due to crop yield reduction as a result of extreme drought are estimated at $37.5M. Approximately $4.5M more when compared to possible expected losses of $33M for five years of moderate drought following historical hydrologic patterns. Finally, model results show incremental and steady groundwater depletion in the Basin. Groundwater storage in the Basin could decrease from 66 MAF to 60 MAF. This indicates that extreme events such as extended drought conditions could add additional stresses on groundwater situation, and as a result have adverse effects on agriculture in the Basin.
Download or read book Central Valley Project State Water Project written by and published by . This book was released on 1986 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impact of Climate Change on Water Resources written by Komaragiri Srinivasa Raju and published by Springer. This book was released on 2017-12-29 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives an overview of various aspects of climate change by integrating global climate models, downscaling approaches, and hydrological models. It also covers themes that help in understanding climate change in a holistic manner. The book includes worked-out examples, revision questions, exercise problems, and case studies, making it relevant for use as a textbook in graduate courses and professional development programs. The book will serve well researchers, students, as well as professionals working in the area of hydroclimatology.
Download or read book Evaluation of Central Valley Project Water Supply and Delivery Systems written by Jeff Sandberg and published by . This book was released on 1991 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Quality Planning written by United States. Soil Conservation Service and published by . This book was released on 1978 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Central Valley Basin written by United States. Bureau of Reclamation and published by . This book was released on 1949 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Drought Analyses of the California Central Valley Surface groundwater Conveyance System written by and published by . This book was released on 2011 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
