Use of Seepage Meters and Mini-Piezometers for Identification of Reservoir-Groundwater Interactions in Lake Mead, Nevada

摘要

The effectiveness of the seepage meter and portable piezometer in evaluating groundwater-reservoir interactions was evaluated over 12 months at Echo Bay in Lake Mead. Three standard piezometers constructed on shore, a refraction seismic technique and water chemistry data were utilized to interpret seepage device effectiveness. Analysis of water quality data showed June discharge was principally a low TDS sodium-calcium-sulfate water similar to Lake Mead water quality. September data showed two possible components of discharge, bank storage water and high TDS calcium-sulfate groundwater. Mini-piezometer data was collected at each seepage meter site, however data usually did not provide correlative results with seepage meter data.