Elevation Raster, Schoharie Reservoir, 2014

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 form of triangulated irregular networks (TINs); the TINs were linearly enforced to better represent geomorphic features within the reservoirs. The linearly enforced TINs were used to create bathymetric maps of the reservoirs; contours were mapped at 2-foot intervals and capacity was calculated at 0.01-foot intervals. This dataset contains the raster surface.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:58598d80e4b01224f329b427
metadata_type geospatial
modified 20200825
old-spatial -74.459323614, 42.32488592, -74.428055955, 42.392541295
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash b989a73c46089b29886ff9c4fc1099370ea37c39
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-74.459323614, 42.32488592], [-74.459323614, 42.392541295], [ -74.428055955, 42.392541295], [ -74.428055955, 42.32488592], [-74.459323614, 42.32488592]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • bathymetry
  • ckan
  • delaware-county
  • geo
  • geoss
  • gps-measurement
  • greene-county
  • national
  • north-america
  • schoharie-county
  • schoharie-reservoir
  • single-beam-echo-sounder
  • united-states
  • usgs-58598d80e4b01224f329b427
isopen False
license_id notspecified
license_title License not specified
maintainer Elizabeth Nystrom
maintainer_email nystrom@usgs.gov
metadata_created 2025-11-20T13:16:15.482631
metadata_modified 2025-11-20T13:16:15.482636
notes 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 form of triangulated irregular networks (TINs); the TINs were linearly enforced to better represent geomorphic features within the reservoirs. The linearly enforced TINs were used to create bathymetric maps of the reservoirs; contours were mapped at 2-foot intervals and capacity was calculated at 0.01-foot intervals. This dataset contains the raster surface.
num_resources 2
num_tags 16
title Elevation Raster, Schoharie Reservoir, 2014