A5027881163- Water resources management and optimization
- Hydrology and Watershed Management Studies
- Water-Energy-Food Nexus Studies
- Fish Ecology and Management Studies
- Hydrology and Sediment Transport Processes
- Hydrology and Drought Analysis
- Cryospheric studies and observations
- Wastewater Treatment and Reuse
- Soil and Water Nutrient Dynamics
- Climate change and permafrost
- Freshwater macroinvertebrate diversity and ecology
- Aquatic and Environmental Studies
- Fiscal Policy and Economic Growth
- Marine and environmental studies
- Water Quality and Resources Studies
- Groundwater and Isotope Geochemistry
- Arctic and Antarctic ice dynamics
- Climate Change Policy and Economics
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Quality and Pollution Assessment
- Water Systems and Optimization
- Climate variability and models
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
University of California, Davis
2001-2007
University of California System
2006
This paper presents results of a large-scale economic-engineering optimization model California's water supply system. The this 4-year effort illustrate the value modeling for providing integrated information needed to manage complex multipurpose includes economic benefits flexible operations, valuation capacity expansion opportunities, estimating user willingness pay additional water, opportunity costs environmental flows, and identification promising conjunctive use transfer opportunities....
If abrupt climate change has occurred in the past and may be more likely under human forcing, it is relevant to look at adaptability of current infrastructure systems severe conditions recent past. Geologic evidence suggests two extreme droughts California during last few thousand years, each 120–200 years long, with mean annual streamflows 40%–60% historical mean. This study synthesized a 72 year drought half inflows using random sampling dry years. One synthetic hydrological record used,...
Abstract The Beaver Creek confluence with the main‐stem Klamath River was studied to assess salmonid use in a thermal mixing zone under various summer hydrological and meteorological conditions. Main‐stem flow releases from Iron Gate Dam ranged 17 cms (615 cfs) 37 (1320 during study period water temperatures 19.5 26°C. A grid constructed define refuge as system of cells. Temperatures were monitored using remote temperature loggers fish counts conducted daytime snorkelling. Most juvenile...
Few states depend more on climatic stability than California. While the California water system is designed fairly well to accommodate repeats of historical droughts in near future, there concern that might not be able easily major distant especially with hydrologic consequences significant climate warming. This study developed comprehensive surface and ground hydrologies for 12 warming scenarios California's inter-tied system, as economic demand estimates urban agricultural uses 2100...
The role of geological-derived nitrogen (N) and phosphorus (P) as sources riverine nutrients was investigated in the Long Valley caldera eastern California. Stream spring waters were collected during biologically-critical summer dry season when water/ground water inputs comprised >90% streamflow. Samples above below major irrigated pastures grazed by beef cattle to isolate effects versus grazing potential N P. Inputs P from geologic materials identified primary source elevated nutrient...
Water exports from California's Sacramento–San Joaquin Delta are an environmental concern because they reduce net outflows of fresh water the Delta, and can entrain fish disrupt flows within Delta. If were no longer pumped regulatory issue becomes one maintaining appropriate into out This paper presents results two sets hydro-economic optimization modeling runs, which developed to represent a range modified operations their economic operational effects on supply system. The first set runs...
Stacy K. Tanaka, Christina R. Connell–Buck, Kaveh Madani, Josue Medellin-Azuara, Jay Lund, and Ellen Hanak doi: http://dx.doi.org/10.15447/sfews.2014v9iss2art4 Water exports from California’s Sacramento–San Joaquin Delta are an environmental concern because they reduce net outflows of fresh water the Delta, can entrain fish disrupt flows within Delta. If were no longer pumped regulatory issue becomes one maintaining appropriate into out This paper presents results two sets hydro-economic...
ABSTRACT: Exports from the Sacramento‐San Joaquin Delta are an important source of water for Central Valley and Southern California users. The purpose this paper is to estimate analyze effects increased exports south users would have on Sacramento economy management if were managed reallocated purely economic benefits, as there ideal market. Current 6,190 thousand acre‐feet per year incrementally maximum export pumping plant capacities. Initial increases in did not increase regional...
Computer model results are becoming more prominent in water policy deliberations California. CalSim II is the most management California, and has become central to a variety of issues controversies. This paper reports on an extensive set loosely-structured interviews with members California's technical policy-oriented community regarding use development The interviewers reflect thoughts interviewees how such interview activities can further policy-effective modeling for management. complex...
The geological record contains extreme droughts beyond those seen in historical hydrologic records. For California, the several last few thousand years. Two of these are 120–200 years long, with mean annual streamflows between 40% and 60% mean. This study synthesized a 72-year for drought this character, having flow record. time series was used as input to an economic-engineering optimization model California's water supply system (CALVIN). allows exploration how management might respond...
Mejica BN, Ebert DA, Tanaka SK, Deas ML. 2023. Managing cyanobacteria with a water quality control curtain in Iron Gate Reservoir, California. Lake Reserv Manage. XX:XXX–XXX.
A large-scale economic-engineering optimization model of California's statewide inter-tied surface and groundwater system, CALVIN, has been developed to examine promising solutions water problems. This paper describes CALVIN presents preliminary results modeling work the economic allocation impacts, at state, regional, users' level, limited regional markets over current policies for resolving projected 2020 scarcity. indicate large gains, estimated $1.3 billion/year, on average, from a 10%...