Rivers and Streams

Derived from a version of the USGS National Elevation Dataset, the Elevation Derivatives for National Applications (EDNA) is a multi-layered database that is hydrologically conditioned to show how water flows and accumulates in rivers and streams throughout the United States. Scientists at EROS use EDNA in flood analysis investigations, pollution studies, and hydroelectric power generation project planning.

Learn more about EDNA and NED:

Elevation Derivatives for National Applications (EDNA)
EDNA
Elevation Derivatives for National Applications (EDNA)—Streams
Streams
Elevation Derivatives for National Applications (EDNA)—Flow Direction
Flow Direction
Elevation Derivatives for National Applications (EDNA)—Slope
Slope
Elevation Derivatives for National Applications (EDNA)—Gradient
Gradient
Elevation Derivatives for National Applications (EDNA)—Watershed Delineation
Watershed