Download or read book Regional Streamflow Response to Wildfire in California Watersheds written by and published by . This book was released on 2014 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: As every watershed and every wildfire event is unique, streamflow response to wildfire is only representative of the specific watershed and conditions that produced the response. Most post-fire streamflow change experiments involve single watersheds, which limits extrapolation of the results beyond the particular watershed examined. A comprehensive understanding of post-fire streamflow response is needed at a regional scale to improve water resources planning and ecosystem management in California. For this dissertation, the regional effect of wildfire was examined for two different components of the streamflow hydrograph; annual streamflow yield and baseflow recession rates. Annual streamflow is a key variable for streamflow management, but high variability in post-fire annual streamflow response at the watershed scale has limited predictions of post-fire annual streamflow response at the regional scale. Baseflow recession rates are an important tool for predicting low flows, yet little is known about how baseflow recession rates respond to wildfire at either watershed or regional scales. A mixed model was introduced to regionalize post-fire streamflow change. Mixed modeling is a statistical approach used to synthesize data containing a hierarchical structure, such as streamflow data pooled from multiple watersheds experiments. A parsimonious storage-discharge model was used to provide insight into the hydrologic processes controlling baseflow recession rates. Annual streamflow significantly increased following wildfire in California at a regional scale. This response was greatest in watersheds with higher percentages of watershed area burnt and during moderately wet years. The first-order control on baseflow recession rates in California was found to be inter-seasonal changes in antecedent storage, not wildfire. Baseflow recession rates were observed to decrease by up to an order of magnitude as antecedent storage levels increased, indicating a shift in the source of recession flows from small, quickly-recharged aquifers at the beginning of the wet season to large, seasonal aquifers as the wet season progressed. Following wildfire, baseflow recession rates significantly decreased at a regional scale, suggesting that the dominant hydrologic processes affected by fire were related to post-fire reductions in above-ground vegetation (e.g. decreased interception, decreased soil evapotranspiration, decreased groundwater evapotranspiration).
Download or read book Modeling the Effects of Fire on Streamflow in a Chaparral Watershed written by Christine Eleana McMichael and published by . This book was released on 2004 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildfire Effects on Net Precipitation Streamflow Regime and Rainfall runoff Events in Northern Rocky Mountain Watersheds written by Christopher Hart Stanley Williams and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, severe wildfire in western North America has increased in frequency as a result of a warming climate and historical fire suppression, impacting an increasing amount of forested area. Reduced forest canopy interception and storage combined with soil water repellency and altered soil structure after wildfire can lead to greater runoff responses than in unburned forests. This has led to a proliferation of post-wildfire hydrological studies, mostly at the plot and hillslope scales, and mainly located in heavily impacted regions of the USA (e.g. Colorado, New Mexico, California). However, the more northern Rocky Mountain regions have also been subjected to warming and increased risk of wildfire. The eastern slopes of the Canadian Rocky Mountains provide a disproportionate amount of vital surface water supplies to the Prairie Provinces largely owing to high overwinter snow accumulation. Much less is known about post-wildfire hydrology and runoff response in these more northern, snow-dominated mountain regions. This study examined impacts from the 2003 Lost Creek wildfire on net precipitation, flow regimes, and storm rainfall-runoff events in Rocky Mountain watersheds in the Crowsnest Pass, Alberta, Canada. Net precipitation was studied in subalpine forest stands while flow regimes and storms were studied at the watershed scale. Four subalpine forest stands (two burned and two unburned reference) were used to measure rainfall interception and snow accumulation (SWE); net precipitation was derived from these measurements for the study period (2005-2014). Mean net precipitation was 274 mm (51%) greater in burned than in unburned reference forest stands. Greater mean snow accumulation (SWE) and net rainfall, respectively, constituted 152 and 122 mm of this total. Studies focused on post-wildfire flow regimes at varying time intervals (annual, monthly, weekly) were conducted during the 2nd to 11th years (2005-2014) after the wildfire. Streamflow and precipitation were measured in three burned and two unburned reference watersheds in a replicated post-hoc study design to enable comparisons. Flow regime studies highlighted greater magnitude and earlier timing of snowmelt runoff in wildfire-affected watersheds - April and May water yields were 100-200% and 40-50% higher, respectively, and half-flow dates arrived approximately 7-10 days earlier in burned compared to reference watersheds. The effects of wildfire on storm runoff during the snow-free season (late June to late September) was more ambiguous but flow responses in burned watersheds were proportionally greater, in general, than those in reference watersheds. However, post-wildfire storm runoff was surprisingly muted compared to that from other wildfire-affected regions and multiple regression analysis suggested fire accounted for
Download or read book Hydrogeologic Response of Small Watersheds to Wildfire written by Edward A. Keller and published by . This book was released on 1994 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Landscape and Management Response to Wildfires in California written by Frederick Andrew Booker and published by . This book was released on 1998 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Fire on Streamflow from Small Watersheds in the Sierra Nevada Foothills written by Robert Arnold Merriam and published by . This book was released on 1957 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Fire on Streaflow from Small Watersheds in the Sierra Nevada Foothills written by Robert Arnold Merriam and published by . This book was released on 1957 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PHYSICAL HYDROLOGY written by S. LAWRENCE DINGMAN. and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Watershed Hydrology written by Vijay P. Singh and published by Allied Publishers. This book was released on 2003 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the Symposium on Fire and Watershed Management October 26 28 1988 Sacramento California written by and published by . This book was released on 1988 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biogeomorphic Responses to Wildfire in Fluvial Ecosystems written by Joan L. Florsheim and published by Geological Society of America. This book was released on 2024-05-22 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Implications of the California Wildfires for Health Communities and Preparedness written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2020-10-01 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: California and other wildfire-prone western states have experienced a substantial increase in the number and intensity of wildfires in recent years. Wildlands and climate experts expect these trends to continue and quite likely to worsen in coming years. Wildfires and other disasters can be particularly devastating for vulnerable communities. Members of these communities tend to experience worse health outcomes from disasters, have fewer resources for responding and rebuilding, and receive less assistance from state, local, and federal agencies. Because burning wood releases particulate matter and other toxicants, the health effects of wildfires extend well beyond burns. In addition, deposition of toxicants in soil and water can result in chronic as well as acute exposures. On June 4-5, 2019, four different entities within the National Academies of Sciences, Engineering, and Medicine held a workshop titled Implications of the California Wildfires for Health, Communities, and Preparedness at the Betty Irene Moore School of Nursing at the University of California, Davis. The workshop explored the population health, environmental health, emergency preparedness, and health equity consequences of increasingly strong and numerous wildfires, particularly in California. This publication is a summary of the presentations and discussion of the workshop.
Download or read book Watershed Management written by Clark H. Gleason and published by . This book was released on 1958 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Streamflow Increases After Removing Woodland riparian Vegetation from a Southern California Watershed written by P. B. Rowe and published by . This book was released on 1963 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecosystems of California written by Harold Mooney and published by Univ of California Press. This book was released on 2016-01-19 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-anticipated reference and sourcebook for CaliforniaÕs remarkable ecological abundance provides an integrated assessment of each major ecosystem typeÑits distribution, structure, function, and management. A comprehensive synthesis of our knowledge about this biologically diverse state, Ecosystems of California covers the state from oceans to mountaintops using multiple lenses: past and present, flora and fauna, aquatic and terrestrial, natural and managed. Each chapter evaluates natural processes for a specific ecosystem, describes drivers of change, and discusses how that ecosystem may be altered in the future. This book also explores the drivers of CaliforniaÕs ecological patterns and the history of the stateÕs various ecosystems, outlining how the challenges of climate change and invasive species and opportunities for regulation and stewardship could potentially affect the stateÕs ecosystems. The text explicitly incorporates both human impacts and conservation and restoration efforts and shows how ecosystems support human well-being. Edited by two esteemed ecosystem ecologists and with overviews by leading experts on each ecosystem, this definitive work will be indispensable for natural resource management and conservation professionals as well as for undergraduate or graduate students of CaliforniaÕs environment and curious naturalists.
Download or read book Man s Effect on California Watersheds written by California. Legislature. Assembly. Committee on Natural Resources, Planning, and Public Works. Subcommittee on Forest Practices and Watershed Management and published by . This book was released on 1968 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
