Terrain models representing river channel and terrestrial surface elevations were developed for use in 2D hydraulic modeling with HEC-RAS software.

Little Gunpowder Falls at Laurel Brook, Maryland, USA Patapsco River at Woodstock, Maryland, USA Patuxent River at Unity, Maryland, USA Seneca Creek at Dawsonville, Maryland, USA USGS:5b91250ce4b0702d0e8085bf biota flood regime floodplain hydrogeomorpholgy hydrology indundation