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Filters: Types: Map Service (X) > partyWithName: U.S. Geological Survey - ScienceBase (X) > Extensions: ArcGIS Service Definition (X) > Categories: Data (X) > partyWithName: U.S. Geological Survey (X) > partyWithName: Elizabeth A Nystrom (X)

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From 2013 to 2015, bathymetric surveys of New York City’s six West of Hudson reservoirs (Ashokan, Cannonsville, Neversink, Pepacton, Rondout, and Schoharie) were performed to provide updated capacity tables and bathymetric maps. Depths were surveyed with a single-beam echo sounder and real-time kinematic global positioning system (RTK-GPS) along planned transects at predetermined intervals for each reservoir. A separate set of echo sounder data was collected along transects at oblique angles to the main transects for accuracy assessment. Field survey data was combined with water-surface elevations in a geographic information system to create three-dimensional surfaces representing reservoir-bed elevations in the...
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From July 14-20, 2016, the U.S. Geological Survey, in cooperation with the City of Ithaca, New York, conducted a bathymetric survey of the Cayuga Inlet flood-control channel and selected mouths of tributaries to Cayuga Inlet and Cayuga Lake in Ithaca, New York. U.S. Geological Survey personnel collected bathymetric data using an acoustic Doppler current profiler. The survey plan generated over 25,000 water depths that were converted to bottom elevations by subtracting the depths from the water-surface elevations recorded by the USGS streamgage, Cayuga Inlet (Cayuga Lake) at Ithaca, N.Y. (station number 04233500), which was located within the surveyed reach. (Information on and data from this streamgage can be found...


    map background search result map search result map Geospatial dataset of bathymetric survey of the Cayuga Inlet flood-control channel and selected tributaries, Ithaca, N.Y., 2016 Geospatial Bathymetry Dataset and Elevation-Area-Capacity Table for Ashokan Reservoir, 2013 to 2014 Geospatial dataset of bathymetric survey of the Cayuga Inlet flood-control channel and selected tributaries, Ithaca, N.Y., 2016 Geospatial Bathymetry Dataset and Elevation-Area-Capacity Table for Ashokan Reservoir, 2013 to 2014