ET Data for Quantifying and Demonstrating Potential Water Resource Benefits of Improved Irrigation Efficiencies in Sierra Valley, California

ET Data for Quantifying and Demonstrating Potential Water Resource Benefits of Improved Irrigation Efficiencies in Sierra Valley, California This Zenodo record publishes evapotranspiration (ET) datasets for Sierra Valley, California, developed to support field-scale and basin-scale evaluation of irrigation efficiency, applied water, and groundwater evapotranspiration (ETg). The package includes an OpenET/ET-Demands applied-water dataset for agricultural fields and a Beamer-Minor Method (BMM) ETg dataset for ET Units and basin-scale ETg summaries. These data support analysis of baseline consumptive use in irrigated agriculture and groundwater-dependent ecosystems (GDEs), and evaluation of potential water-resource benefits associated with improved irrigation efficiency. The deposit is organized under the package root folder DRI_SierraValleyCA_ET_DataPackage and includes two primary data packages (Feb 2026 snapshot): 1) OpenET / ET-Demands Applied Water Located in: OpenET_ET_Demands_AppliedWater/ This package contains: Agricultural field boundary shapefile: AgriculturalFieldBoundaries_Stetson_CADWR_Merged_Feb2026.*Polygon boundaries for agricultural fields used for field-scale ET and applied-water accounting. Attributes include field identifiers, area, irrigation/system descriptors, crop attribution by year (2008–2024), and selected adjusted parameters used in analysis. Field summaries table: SierraValley_OpenET_ETDemands_AppliedWater_FieldSummaries_WY_Feb2026.csvOne record per field per Water Year (DRI_ID, YEAR). The table includes irrigated fraction, effective precipitation, groundwater ET, final ETa, NetET, ET of applied water, applied water, irrigation efficiency, and unit conversions to feet and acre-feet. Methods documentation: SierraValley_OpenET_ETDemands_AppliedWater_FieldSummaries_WY_Feb2026.docx Key processed relationships represented in the field summary table include: NetET_MM_final derived from ETa minus effective precipitation with winter moisture carry-forward ETAW_MM_final = NetET_MM_final − ETG_MM AR_MM_final = ETAW_MM_final / irr_eff 2) BMM Groundwater ET (ETg) Located in: BMM-Groundwater_ET/ This package summarizes groundwater evapotranspiration (ETg) using an ET Unit framework. It contains: ETg raster: BMM_ETg_SierraValley_Raster_Feb2026.tifSpatial ETg surface for the Sierra Valley project area. ET Unit polygons: BMM_ETg_SierraValley_ET_Units_Feb2026.*Polygon layer used to aggregate ETg by ET Unit. Key attributes include Id, BasinName, ET_unit, Descrip, HYD_AREA, HA_number, scale_fctr, and rplc_rt. Multiple polygons may share the same ET Unit category. Detailed summary table: BMM_ETg_SierraValley_Summary_Feb2026.csvET Unit feature-level table with ETa/ETg metrics, uncertainty bounds (LCI/UCI), diagnostics/flags, and converted ETg rates and volumes. Concise ET Unit summary table: BMM_ETg_SierraValley_ET_Unit_Summary_Feb2026.csvETg totals by ET Unit category, including Irrigated Cropland, Meadow, Other, Phreatophyte Shrubland, Riparian, Wetland, and a Total row. Processing and interpretation notes OpenET/ET-Demands summaries are reported by Water Year. Winter moisture carry-forward is applied in the OpenET/ET-Demands workflow and resets each October. In the BMM ET Unit shapefile, Id should be treated as a feature field and may not serve as a unique basin-wide identifier. In the concise BMM ET Unit summary, the Total row reports area and ETg volume totals; total ETg rate fields may be blank and can be derived from total volume divided by total area if needed. Primary geography: Sierra Valley, California, USA.Temporal scope: Field boundary crop attribution spans 2008–2024; OpenET/ET-Demands summaries are provided by Water Year.Formats: ESRI Shapefile, GeoTIFF, CSV, and DOCX.Recommended join key: DRI_ID for linking the OpenET/ET-Demands field summaries to the agricultural field boundary layer.