Simulation of groundwater and surface-water resources and evaluation of water-management alternatives for the Chamokane Creek basin, Stevens County, Washington

Simulation of groundwater and surface-water resources of the San Antonio Creek Valley watershed, Santa Barbara County, California

“…The NMRSE is calculated by dividing the RMSE of the residuals by the total range of measured groundwater levels in the groundwater system (Anderson and Woessner, 1992). The value is expressed as a percentage, and previous studies indicate that this should be less than 10 percent to be acceptable (Drost and others, 1999;Ely and Kahle, 2012).…”

Simulation of groundwater storage changes in the Quincy Basin, Washington

“…The depth of each stream within each reach was computed by SFR using Manning's equation for open channel flow assuming a wide rectangular channel, which is a reasonable approximation of channel geometry. For routing streamflow, a constant value of 0.04 was used for Manning's coefficient (Ely and Kahle, 2012).…”

Hydrogeologic framework and groundwater/surface-water interactions of the South Fork Nooksack River Basin, northwestern Washington

“…A groundwater-flow model coupled with a watershed model may be used to investigate groundwater/surfacewater interactions, develop water budgets, and simulate the effects of current and potential land use, climate, and groundwater pumping in the study area. The USGS has used a coupled groundwater and surface-water flow model (GSFLOW; Markstrom and others, 2008) based on the integration of the Precipitation-Runoff Modeling System (PRMS) and the Modular Groundwater-Water Flow Model (MODFLOW-2005), to develop simulations of groundwater and surface-water resources in other areas of Washington, including the Chamokane Creek Basin in northeastern Washington (Ely and Kahle, 2012). The hydrogeologic and hydrologic data presented in this report; including the surficial extent and thickness of hydrogeologic units along three cross sections, water-level altitudes measured in August 2012, and at monthly intervals during water year 2013, provide components needed to construct and calibrate a groundwater-flow model.…”