Simulated streamflow extents for Meadow Valley Wash at Stuart Ranch, near Rox, Nevada

This polygon shapefile represents model simulated streamflow extents for Meadow Valley Wash at Stuart Ranch, near Rox, Nevada. A flood frequency analysis was performed at USGS streamgage 09418700 - Meadow Valley Wash near Rox, Nevada, to estimate the 50-, 20-, 10-, 4-, 2-, and 1-percent annual exceedance probability (AEP) flood streamflows. The flood-inundation extents for the 50-, 20-, 10-, 4-, 2-, and 1-percent AEP floods were simulated for the 2021 topography and with possible minor and major stream restoration modifications. Each model simulation had the same base flow streamflow and flood-hydrographs. The topography data used for each model simulation was adjusted to represent the possible restoration modification scenarios. Streamflow extents were simulated with a 2-D unsteady hydraulic model in the Hydrologic Engineering Center River Analysis System (HEC-RAS) computer program. Those locations where the water-surface was higher than the land surface were defined as inundated.