Simulated Effects of Water Exchanges on Streamflow and Specific Conductance in211 the Arkansas River Upstream from Avondale, Colorado

摘要

This report presents the results of a study of the simulated effects of water211u001eexchanges on streamflow and specific conductance in the Arkansas River. The 211u001ecumulative effects of two different exchanges were simulated: (1) Colorado 211u001eSprings' transmountain return-flow exchange, and (2) Aurora's Rocky Ford Ditch 211u001eexchange. The two accounting models selected for the exchange simulation were 211u001emodifed from models used by Enartech Consulting Engineers and Hydrologists (1992) 211u001eto simulate exchange operations between Pueblo Reservoir and alternate points of 211u001estorage and diversion in the upper basin of the Arkansas River. For the current 211u001e(1998) study, nine different scenarios of exchange were simulated for water years 211u001e1986-93. The nine scenarios span a range of potential future exchange rates and 211u001estorage conditions. The 8-year study period was selected for use in the 211u001esimulations because of the availability of daily streamflow and specific-211u001econductance data at several key locations on the Arkansas River and on Fountain 211u001eCreek.