DS-777 Average Annual Precipitation Data, 1940 to 1949, in inches estimated from an Inverse-Distance-Weighted (IDW) interpolation for the High Plains Aquifer in Parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

The water-budget-components geodatabase contains selected data from maps in the, "Selected Approaches to Estimate Water-Budget Components of the High Plains, 1940...水量平衡组分地理数据库（water-budget-components geodatabase）收录了源自《1940年高平原水量平衡组分估算方法选辑》（"Selected Approaches to Estimate Water-Budget Components of the High Plains, 1940..."）中各类地图的精选数据。