Oregon hydrologic area agricultural field boundaries and field level and hydrologic unit water-use data

The data was developed for the USGS Water-Use and Data Research program grant opportunities G20AS00053 and G21AS00258, combined with fundnig from Oregon Water Resources Department to improve estimates of water use from irrigated lands in Oregon. These data contain attributes of irrigation status, irrigation source type, crop type, irrigation method, assumed irrigation efficiency, irrigation water source, evapotranspiration (ET) data from OpenET, and effective precipitation developed using the USBR ET Demands model. Thee data were aggregated in order to further the development of estimates of applied water at the field-scale.NOTICE:
This dataset is superseded by an expanded and updated release and report, “Crop Evapotranspiration, Consumptive Use, and Open-Water Evaporation for Oregon” (Huntington et al., 2025). Please download and cite the new version hosted at https://www.dri.edu/project/owrd-et/. This record is retained for transparency but should not be used for new analyses., A single set of draft field boundaries for all agricultural lands were developed to represent the maximum extent of irrigated lands from 1985-2020 (digitized at the 1:5,000 scale). The approach used for this task was relatively straight forward yet time consuming and required careful attention to detail to avoid numerous potential pitfalls. Agricultural field boundaries were developed within a GIS system by modifying existing 2007 USDA Common Land Unit (CLU) data, OWRD drawn field boundaries (e.g., Malheur Lake Basin) and developing field boundaries from scratch where needed. This entailed: 1) using Common Land Unit (CLU) as-is where the quality and representativeness of the linework was deemed suitable; 2) modifying the CLU data to eliminate duplicates, overlaps, and slivers within the linework, and make representative of maximum agricultural extent; 3) manually digitizing new field boundaries where they do not currently exist; and 4) QAQC all results.
Crop type and irrigation status r..., , # Oregon Statewide ET OpenET Field Boundary and HUC Watershed Geodatabases Processing

Blake Minor - DRI

12/22/23

The Oregon Statewide Evapotranspiration (ET) field boundary file (\"Oregon_WUDR_II_DataPackage_Field_Scale.zip\") and HUC file geodatabase (\"Oregon_WUDR_II_DataPackage_HUC_Summary.zip\") contains results of the Phase I and II of the USGS Water-Use and Data Research (WUDR) projects for the state of Oregon. These files contains summaries of ET, effective precipitation, net ET, and additional variables/attributes for the 2016-2022 time period on a per-field and per HUC-8 and HUC-12 basis. Elements of the field level geodatabase include the field boundary feature class, annual summary table CSV's, and relationship classes to relate the table records to the feature class dataset. The HUC file geodatabase contains two feature classes, with one of them being the HUC-8 summaries and the other being the HUC-12 summaries. Google Earth Engine (GEE) and the Python Application Programming...,