This model archive contains all relevant files to run and document the Hydrological Engineering Center-River Analysis System (HEC-RAS) coupled one and two-dimensional hydraulic model used to simulate flood-inundation extents for the Muddy River, near Moapa, Nevada. The HEC-RAS model was applied to simulate flood-inundation extents for a current (2019) levee location and for a new location location proposed as part of a river restoration plan. The model archive includes information on: 1) stage-streamflow rating used for model calibration (calibration_targets); 2) the model run and output files (model_files); and 3) the 32-bit executable installation file for HEC-RAS 6.1 used to run the simulations (HEC-RAS_61.Setup.exe); 4) the modeling software version and website (model-software-version.txt); 5) the model bounding box coordinates (modelgeoref.txt); 6) an overview of how to run the model and all the files and folders in SWmodel_Archive.zip (README.txt).

This polygon shapefile represents model simulated flood-inundation extents for the Muddy River, near Moapa Nevada. A flood frequency analysis was performed at USGS streamgage 09416000 - Muddy River near Moapa, 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 current levee location in 2019 and for the new levee location of the proposed restoration. One model simulation represents the levee at its current (existing) location in 2019 on the east bank of the river and referred to as ‘current conditions (2019).’ A second model simulation removes the existing levee and represents the new levee location farther away from the river on the east side of the proposed restoration area. The second model simulation is referred to as the ‘proposed restoration conditions.’ Both model simulations had the same flood-hydrographs, hydraulic structures, and roughness coefficients; however, the topography data used for each model simulation was adjusted to represent differing locations of the existing and proposed levees. Flood-inundation extents were simulated with a coupled 1-D- and 2-D unsteady hydraulic model in the Hydrologic Engineering Center’s River Analysis System (HEC-RAS) computer program. Those locations where the water-surface was higher than the land surface were defined as inundated. The inundation polygons are named by AEP flow (50, 20, 10, 4, 2, 1-percent) and condition (current and proposed restoration).

This polygon shapefile represents model simulated flood-inundation extents for the Muddy River, near Moapa Nevada. A flood frequency analysis was performed at USGS streamgage 09416000 - Muddy River near Moapa, 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 current levee location in 2019 and for the new levee location of the proposed restoration. One model simulation represents the levee at its current (existing) location in 2019 on the east bank of the river and referred to as ‘current conditions (2019).’ A second model simulation removes the existing levee and represents the new levee location farther away from the river on the east side of the proposed restoration area. The second model simulation is referred to as the ‘proposed restoration conditions.’ Both model simulations had the same flood-hydrographs, hydraulic structures, and roughness coefficients; however, the topography data used for each model simulation was adjusted to represent differing locations of the existing and proposed levees. Flood-inundation extents were simulated with a coupled 1-D- and 2-D unsteady hydraulic model in the Hydrologic Engineering Center’s River Analysis System (HEC-RAS) computer program. Those locations where the water-surface was higher than the land surface were defined as inundated. The inundation polygons are named by AEP flow (50, 20, 10, 4, 2, 1-percent) and condition (current and proposed restoration).

This U.S. Geological Survey data release consists multiple datasets used to simulate the extents of flood inundation along the Muddy River, near Moapa, Nevada. Flood-inundation extents equal the maximum area of flood inundation and were estimated using a coupled one-dimensional (1D) and two-dimensional (2D) hydraulic model. The modeled extents represent six annual exceedance probabilities simulated for the current (2019) levee location adjacent to the Muddy River and a new levee location associated with a proposed restoration of a selected reach along the Muddy River. The data release includes: 1) a polygon dataset of the flood-inundation extents (MuddyRiver_Flood_Inundation_p.shp); 2) a zip file containing all relevant files to document and run the PeakFQ flood-frequency analysis used as input into the hydraulic model (0941600_Flood_Frequency_Archive.zip); 3) a zip file containing all relevant files to document and run the coupled 1D and 2D Hydrological Engineering Center-River Analysis System (HEC-RAS) hydraulic model used to generate a polygon dataset of flood-inundation extents (SWmodel_Archive.zip); 4) a polygon dataset of the current and proposed levee locations (MuddyRiver_Levee_p.shp); 5) a point dataset of survey points (RTK-TS_survey_x.shp) collected from April 1 to August 9, 2019, using real-time kinematic global navigation satellite system (GNSS) and total station (TS); and 6) a point dataset of seven static reference locations (Static_GNSS_x.shp) collected from March 29 to August 9, 2019, using a single-baseline online positioning user service – static (OPUS-S) GNSS survey.

This U.S. Geological Survey data release consists multiple datasets used to simulate the extents of flood inundation along the Muddy River, near Moapa, Nevada. Flood-inundation extents equal the maximum area of flood inundation and were estimated using a coupled one-dimensional (1D) and two-dimensional (2D) hydraulic model. The modeled extents represent six annual exceedance probabilities simulated for the current (2019) levee location adjacent to the Muddy River and a new levee location associated with a proposed restoration of a selected reach along the Muddy River. The data release includes: 1) a polygon dataset of the flood-inundation extents (MuddyRiver_Flood_Inundation_p.shp); 2) a zip file containing all relevant files to document and run the PeakFQ flood-frequency analysis used as input into the hydraulic model (0941600_Flood_Frequency_Archive.zip); 3) a zip file containing all relevant files to document and run the coupled 1D and 2D Hydrological Engineering Center-River Analysis System (HEC-RAS) hydraulic model used to generate a polygon dataset of flood-inundation extents (SWmodel_Archive.zip); 4) a polygon dataset of the current and proposed levee locations (MuddyRiver_Levee_p.shp); 5) a point dataset of survey points (RTK-TS_survey_x.shp) collected from April 1 to August 9, 2019, using real-time kinematic global navigation satellite system (GNSS) and total station (TS); and 6) a point dataset of seven static reference locations (Static_GNSS_x.shp) collected from March 29 to August 9, 2019, using a single-baseline online positioning user service – static (OPUS-S) GNSS survey.

This model archive contains all relevant files to run and document the Hydrological Engineering Center-River Analysis System (HEC-RAS) two-dimensional hydraulic model used to simulate streamflow extents for the Meadow Valley Wash at Stuart Ranch, near Rox, Nevada. The HEC-RAS model was applied to simulate streamflow extents for the current (2021) topography and modified topography associated with possible restoration of Stuart Ranch along Meadow Valley Wash. The model archive includes information on: 1) high-water marks and water-surface elevations used for model calibration (calibration_targets); 2) the model run and output files (model_files); 3) the 32-bit executable installation file for HEC-RAS 6.5 used to run the simulations (HEC-RAS_65.Setup.exe); 4) the modeling software version and website (model-software-version.txt); 5) the model bounding box coordinates (modelgeoref.txt); 6) an overview of how to run the model and all the files and folders in Stuart_SWmodel_Archive.zip (README.txt).

This archive contains all relevant files to run and document the flood-frequency analysis using the PeakFQ 7.3 software for estimating the annual exceedance probability streamflows for U.S. Geological Survey streamgage 09416000 - Muddy River near Moapa, Nevada. The archive includes: 1) the PeakFQ input file (09416000_peak.txt); 2) the PeakFQ output file (09416000_PEAK.PRT); 3) the PeakFQ specifications file (09416000_PEAK.PSF); 4) the PeakFQ input data graph file (09416000_inp.EMF); 5) the PeakFQ Annual exceedance probability plot file (094196000.EMF); 6) the summary table documenting the flood-frequency (09416000_Flood_Frequency.xlsx);

This polygon shapefile represents the boundaries of the current (2019) and proposed levee locations used to simulate flood-inundation extents for the at Muddy River, near Moapa, Nevada. The new levee location is proposed as part of a river restoration plan for selected reaches of the Muddy River.

This polygon shapefile represents the boundaries of the current (2019) and proposed levee locations used to simulate flood-inundation extents for the at Muddy River, near Moapa, Nevada. The new levee location is proposed as part of a river restoration plan for selected reaches of the Muddy River.

Terrain models representing river channel and terrestrial surface elevations were developed for use in 2D hydraulic modeling with HEC-RAS software. Channel bed elevations were determined from cross-sectional field surveys (Seneca Creek and Patapsco River) or manual corrections of the LIDAR data (Patuxent River and Little Gunpowder Falls) and integrated with the terrestrial LIDAR data.