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Umpqua River, OR (P180) Bathymetric Digital Elevation Model(30 meter...
Bathymetry for the Umpqua River was derived from three surveys containing10,216 soundings. No surveys were omitted. The average separationbetween soundings was 48 meters. All... -
H09238: NOS Hydrographic Survey, Salmon...
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation...