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Agricultural land use data includes crop type classification, crop group , total field acres, irrigation types, rotation crops, date of entry, last survey date, organic, and notes. Polygons represent actual agricultural field borders and typically represent one crop growing on that location. Acreage is a calculated value. Attributes are updated by WSDA staff via ground surveys or by using outside sources such as USDA's NASS Cropland Data Layer. Outside resources are used whenever possible, such as obtaining data from producers, enlisting help from Conservation Districts, etc. This land use data is published annually at the section-level, but due to limited resources, the entire state is not updated annually. WSDA strives to maintain a minimum 4 year refresh schedule, with a target goal of every 2 or 3 years, especially in the irrigated agricultural basins. |