Specifications include, but are not limited to: 1) Collect supporting data for Hydrologic, Hydraulic, and Terrain Analyses building upon data in the previous study BRA Inundation Mapping and Reservoir Operations Project (August 2018). 2) Obtain Geographical Information System (GIS) shapefiles of the Federal Emergency Management Agency (FEMA) floodway, 100-yr, 500-yr boundaries, and stream centerline. 3) Utilize Digital Elevation Model (DEM) data from Morris Sheppard Dam downstream to the headwaters of Lake Whitney. Use bathymetry for Lake Granbury from the 2015 Texas Water Development Board volumetric survey. 4) Update GIS base data of roads, water-bodies, lakes, creeks, airports, and any significant geographic areas.