Simulation of the Effects of the Devils Lake State Outlet on Hydrodynamics and Water Quality in Lake Ashtabula, North Dakota, 2005-10

摘要

he purpose of this report is to describe the simulation of hydrodynamics and water quality in Lake Ashtabula and to provide a better understanding of how discharge from the Devils Lake State Outlet located upstream in the Sheyenne River would effect the hydrology and water quality in Lake Ashtabula. Hydrodynamics and water-quality characteristics in Lake Ashtabula were simulated using the U.S. Army Corps of Engineers (USACE) CE-QUAL-W2 modeling software, version 3.6 (Cole and Wells, 2003). The laterally averaged, two-dimensional model was calibrated using ambient data col-lected from June 2006 through June 2010. Scenarios also were conducted using the Lake Ashtabula model to simulate the possible effects of the current Devils Lake State Outlet opera-tion, possible future changes to the outlet, and additional out-lets from Devils Lake on the water quality in Lake Ashtabula.