@Ogallala_water: Ogallala Aquifer Summit April 9-10, 2018 High Plains aquifer water-level changes, predevelopment (about 1950) to 2015. Figure 1 from USGS SIR 2017-5040.(Public domain.) Click here for all the inside skinny and to register. Share this:Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...