Flood-Inundation Areas in Grapevine Canyon Near Scotty's Castle, Death Valley National Park, California
Dates
Publication Date
2020-10-16
Start Date
2016-07-12
End Date
2016-07-14
Citation
Morris, C.M., Welborn, T.L., and Minear, J.T., 2020, Geospatial Data, Tabular Data, and Surface-Water Model Archive for Delineation of Flood-Inundation Areas in Grapevine Canyon Near Scotty's Castle, Death Valley National Park, California: U.S. Geological Survey data release, https://doi.org/10.5066/P9IPKW55.
Summary
This polygon shapefile represents estimated flood-inundation areas in Grapevine Canyon near Scotty's Castle, Death Valley National Park. Estimates of the 4, 2, 1, 0.5, and 0.2 percent annual exceedance probability (AEP) flood streamflows (previously known as the 25, 50, 100, 250, and 500-year floods) were computed from regional flood regression equations. The estimated flood streamflows were used with one-dimensional hydraulic models to compute water surface elevations that were mapped on a digital terrain model of the study area. Those locations where the water surface was higher than the land surface were defined as inundated. The inundation polygons are named by AEP flow (4, 2, 1, 0.5, 0.2-percent) and geometry (High, Final, and [...]
Summary
This polygon shapefile represents estimated flood-inundation areas in Grapevine Canyon near Scotty's Castle, Death Valley National Park. Estimates of the 4, 2, 1, 0.5, and 0.2 percent annual exceedance probability (AEP) flood streamflows (previously known as the 25, 50, 100, 250, and 500-year floods) were computed from regional flood regression equations. The estimated flood streamflows were used with one-dimensional hydraulic models to compute water surface elevations that were mapped on a digital terrain model of the study area. Those locations where the water surface was higher than the land surface were defined as inundated. The inundation polygons are named by AEP flow (4, 2, 1, 0.5, 0.2-percent) and geometry (High, Final, and Low), and also include manually-delineated polygons where flow is inferred.
These data were collected as part of a U.S. Geological Survey study, done in cooperation with the National Park Service, to assess the extent of potential flood-inundation areas in Grapevine Canyon near Scotty's Castle, Death Valley National Park, California. Regional flood regression equations were used to estimate the 4, 2, 1, 0.5, and 0.2 percent annual exceedance probability (AEP) flood streamflows. The estimated flood streamflows were used in the one-dimensional hydraulic model to compute water surface elevations mapped using the digital terrain model.
