HR: 0800h
AN: H21A-0189    [Abstracts]
TI: Applying C2VSIM, an integrated hydrologic model of California's Central Valley, to assess local and regional impacts of conjunctive use projects
AU: * Brush, C F
EM: cbrush@water.ca.gov
AF: Hydrology Section, Bay-Delta Office, California Department of Water Resources, 1416 Ninth Street, Sacramento, CA 95814, United States
AU: Dogrul, E C
EM: dogrul@water.ca.gov
AF: Hydrology Section, Bay-Delta Office, California Department of Water Resources, 1416 Ninth Street, Sacramento, CA 95814, United States
AU: Kadir, T N
AF: Hydrology Section, Bay-Delta Office, California Department of Water Resources, 1416 Ninth Street, Sacramento, CA 95814, United States
AU: Chung, F I
EM: chung@water.ca.gov
AF: Hydrology Section, Bay-Delta Office, California Department of Water Resources, 1416 Ninth Street, Sacramento, CA 95814, United States
AB: Applications integrating land surface and root-zone processes with groundwater and surface water flow at the watershed scale (e.g. IWFM, SHE and the MODFLOW Farm Process) provide more robust and flexible models by internally calculating inter-process fluxes. The direct linkage of multiple processes within a single application facilitates model calibration because each model parameter is constrained by a greater number of observations and observation types, and the sensitivity of model results to the components of each process can be used to focus improvement efforts on the parameters and processes where they will provide the greatest impact on simulation results. Integrated models can also reduce the complexity of model input files by accepting generally available spatial and time-series data sets (e.g. precipitation, evapotranspiration and land use) and internally computing inter-process fluxes, eliminating the need to preprocess large amounts of data or to develop quasi- steady-state linkages between two or more process-level models. This increases model flexibility, facilitating for example analysis of watershed response to changes in precipitation or land use, while reducing the potential for introducing errors. Some of the advantages of integrated watershed-scale applications are demonstrated by applying the California Central Valley Groundwater-Surface Water Simulation Model (C2VSIM), which simulates land-surface, groundwater and surface water flow in the alluvial portion of California's Central Valley, to assess local and regional impacts of conjunctive use projects.
UR: http://baydeltaoffice.water.ca.gov/modeling/hydrology/IWFM/index.cfm
DE: 1829 Groundwater hydrology
DE: 1830 Groundwater/surface water interaction
DE: 1836 Hydrological cycles and budgets (1218, 1655)
DE: 1846 Model calibration (3333)
DE: 1879 Watershed
SC: Hydrology [H]
MN: 2007 Fall Meeting