Digital map of water-level changes in the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, predevelopment (about 1950) to 2013
The High Plains aquifer extends from south of 32 degrees to almost 44 degrees north latitude 
and from 96 degrees 30 minutes to 104 degrees west longitude. The aquifer underlies about 
175,000 square miles in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, 
South Dakota, Texas, and Wyoming. This dataset …