Delta Evapotranspiration of Applied Water (DETAW v2.0) estimates the daily actual evapotranspiration(ET) and root zone water balance on 168 sub-areas in the Sacramento-San Joaquin River Delta. The package includes the model code, model inputs, technical reports, preliminary user’s manual, and necessary software to support the model. The model can run and produce the daily actual crop ET and root zone water balance related terms by using this package provided historical simulation inputs.

Delta Channel Depletion (DCD v1.0) is an extension of Delta Evapotranspiration of Applied Water (DETAWv2.0). Based on the estimation of Delta ground surface water balance by DETAW v2.0, DCD v1.0 simulates the daily channel depletions, including diversions, drainages and seepages, in the Sacramento-San Joaquin River Delta and distributes them on the Delta Simulation Model 2(DSM2) nodes. The package includes the model code, model inputs, technical reports, preliminary user’s manual, and necessary software to support the model.

Annual report submitted by the DWR's Delta Modeling Section

Annual report submitted by the DWR's Delta Modeling Section

Delta 2016 Land Use Data that is used for DETAW-DCD.

Resources for the DWR Delta Modeling User Group California Department of Water Resources, Delta Modeling Section.

Resources for the DWR Delta Modeling User Group California Department of Water Resources, Delta Modeling Section.

Annual report submitted by the DWR's Delta Modeling Section

This data release provides a monthly irrigation water use reanalysis for the period 2000-20 for all U.S. Geological Survey (USGS) Watershed Boundary Dataset of Subwatersheds (Hydrologic Unit Code 12 [HUC12]) in the conterminous United States (CONUS). Results include reference evapotranspiration (ETo), actual evapotranspiration (ETa), irrigated areas, consumptive use, and effective precipitation for each HUC12. ETo and ETa were estimated using the operational Simplified Surface Energy Balance (SSEBop, Senay and others, 2013; Senay and others, 2020) model executed in the OpenET (Melton and others, 2021) web-based application implemented in Google Earth Engine. Results provided by OpenET/SSEBop were summarized to hydrologic response units (HRUs) in the National Hydrologic Model (NHM; Regan and others, 2019) to estimate consumptive use and effective precipitation on irrigated lands. Irrigated lands for the CONUS were provided by the Landsat-based Irrigation Dataset (LANID; Xie and others, 2019) for each year of the reanalysis period. Consumptive use estimates provided by the NHM were disaggregated to HUC12s using area weighted intersections with HRUs and the relative proportion of irrigated lands in each intersected area. These datasets are generated during the irrigation reanalysis workflow (irrigation_reanalysis.7zip). The files actet_openet.cbh, potet_openet.cbh, and dyn_ag_frac.param are created in step one of the workflow, which involves converting daily OpenET/SSEBop results into inputs for the NHM. All other files are produced by the NHM and are utilized for calculating irrigation consumptive use and effective precipitation.

This data release provides a monthly irrigation water use reanalysis for the period 2000-20 for all U.S. Geological Survey (USGS) Watershed Boundary Dataset of Subwatersheds (Hydrologic Unit Code 12 [HUC12]) in the conterminous United States (CONUS). Results include reference evapotranspiration (ETo), actual evapotranspiration (ETa), irrigated areas, consumptive use, and effective precipitation for each HUC12. ETo and ETa were estimated using the operational Simplified Surface Energy Balance (SSEBop, Senay and others, 2013; Senay and others, 2020) model executed in the OpenET (Melton and others, 2021) web-based application implemented in Google Earth Engine. Results provided by OpenET/SSEBop were summarized to hydrologic response units (HRUs) in the National Hydrologic Model (NHM; Regan and others, 2019) to estimate consumptive use and effective precipitation on irrigated lands. Irrigated lands for the CONUS were provided by the Landsat-based Irrigation Dataset (LANID; Xie and others, 2019) for each year of the reanalysis period. Consumptive use estimates provided by the NHM were disaggregated to HUC12s using area weighted intersections with HRUs and the relative proportion of irrigated lands in each intersected area. These datasets are generated during the irrigation reanalysis workflow (irrigation_reanalysis.7zip). The files actet_openet.cbh, potet_openet.cbh, and dyn_ag_frac.param are created in step one of the workflow, which involves converting daily OpenET/SSEBop results into inputs for the NHM. All other files are produced by the NHM and are utilized for calculating irrigation consumptive use and effective precipitation.