Surface Flow on Medano, Mosca, and Sand Creeks in Relation to Fault Zones and Water Tables

Abstract

This project seeks to determine the relation between surging surface flow and projected groundwater declines at the Great Sand Dunes National Monument. Surging flow in Medano Creek is a unique visitor attraction at the Monument, and is exhibited from April through July at easily accessible sites. Projected water table declines of up to 46 m due to an adjacent groundwater development scheme may increase infiltration rates in Monument creeks, thus leading to diminished or eliminated surge flow. This report covers the third 6-month period of the contract (May 15-Nov. 15, 1992).