High Plains, 1959-1980 and undated

The materials in this series primarily relate to the artificial groundwater recharge studies in the High Plains of Colorado. The principal study represented here was conducted on the Arikaree River near Cope, Colorado. Robert Longenbaugh was the principal investigator on the project, which began in 1964 with state funding to the Colorado Ground Water Commission, which subcontracted with CSU. The goal was to study the feasibility of recharging excess or flood waters to an unconfined aquifer. Longenbaugh was also principal investigator on an earlier study (1963) on playa lakes in eastern Colorado as well as a participant in a later study (1974) in the Frenchman watershed. Other studies found here relate to irrigation pump efficiency tests and pumping costs. The materials are arranged in two subseries.