Geospatial bathymetry datasets for Lake Gilead, New York, 2017

Dates

Start Date: 2017-05-22
End Date: 2017-05-23
Publication Date: 2021-06-16

Citation

Nystrom, E.A, Huston, C.J., and Welk, R.J, 2021, Geospatial bathymetry datasets for New York City's East of Hudson Reservoirs and Controlled Lakes: U.S. Geological Survey data release, https://doi.org/10.5066/P9ZZQ2OT.

Summary

From May 2017 to November 2019, the U.S. Geological Survey conducted bathymetric surveys of New York City's East of Hudson Reservoirs. Bathymetry data were collected at Lake Gilead during May 2017. Depth data were collected primarily with a multibeam echosounder. Quality assurance points were measured with a single-beam echosounder. Water surface elevations were established using real-time kinematic (RTK) and static global navigation satellite system (GNSS) surveys and submersible pressure transducers. Measured sound velocity profiles were used to correct echosounder depth measurements for thermal stratification. Digital elevation models were created by combining the measured bathymetry data with lidar elevation data surrounding [...]

Summary

From May 2017 to November 2019, the U.S. Geological Survey conducted bathymetric surveys of New York City's East of Hudson Reservoirs. Bathymetry data were collected at Lake Gilead during May 2017.

Depth data were collected primarily with a multibeam echosounder. Quality assurance points were measured with a single-beam echosounder. Water surface elevations were established using real-time kinematic (RTK) and static global navigation satellite system (GNSS) surveys and submersible pressure transducers. Measured sound velocity profiles were used to correct echosounder depth measurements for thermal stratification. Digital elevation models were created by combining the measured bathymetry data with lidar elevation data surrounding the reservoirs; gaps in the combined data were estimated (for example the tops of submerged islands) or interpolated.

Files included in this Data Release include: grids (tiff format) of reservoir bed elevation, data source, and cell data standard deviation; shapefiles of elevation contours at a 2-foot interval and of single-beam echosounder quality assurance points; and text files (comma-separated value format) of elevation-area-capacity table, measured GNSS points, water surface elevation time series (tides) used to process echosounder data, measured sound velocity profiles, and average sound velocity profiles used to process echosounder data.

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Contacts

Point of Contact :: Elizabeth A Nystrom, U.S. Geological Survey, New York Water Science Center
Process Contact :: Elizabeth A Nystrom, U.S. Geological Survey, New York Water Science Center
Originator :: Elizabeth A. Nystrom, Courtney J. Huston, Robert J. Welk
Metadata Contact :: Elizabeth A Nystrom, U.S. Geological Survey, New York Water Science Center
Publisher :: U.S. Geological Survey
SDC Data Owner :: New York Water Science Center
Distributor :: U.S. Geological Survey - ScienceBase

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Gilead.xml “Metadata XML” Original FGDC Metadata	View	44.47 KB	application/fgdc+xml
Gilead_CapacityByDepthFt.csv		376.94 KB	text/csv
Gilead_WaterSurfaceElevation_FtNAVD88.csv		2.3 KB	text/csv
Gilead_GNSS_WaterSurfaceElevation_Observations.csv		170 Bytes	text/csv
Gilead_SoundVelocity_AveragedProfiles.csv		660 Bytes	text/csv
Gilead_SoundVelocity_MeasuredProfiles.csv		3.02 KB	text/csv

Extension: Gilead_SD_ft_NAD83.zip
Gilead_SD_ft_NAD83.tfw		90 Bytes
Gilead_SD_ft_NAD83.tif		6.19 MB
Gilead_SD_ft_NAD83.tif-ColorRamp.SLD		2.07 KB

Shapefile: Gilead_QApoints.zip
Gilead_QApoints.dbf		1.5 MB
Gilead_QApoints.prj		424 Bytes
Gilead_QApoints.shp		162.66 KB
Gilead_QApoints.shx		46.54 KB

Extension: Gilead_Source_NAD83.zip
Gilead_Source_NAD83.tfw		90 Bytes
Gilead_Source_NAD83.tif		79.95 KB
Gilead_Source_NAD83.tif-ColorRamp.SLD		2.07 KB

Shapefile: Gilead_2ftContours.zip
Gilead_2ftContours.dbf		11.82 KB
Gilead_2ftContours.prj		424 Bytes
Gilead_2ftContours.shp		2.73 MB
Gilead_2ftContours.shx		1.38 KB

Extension: Gilead_ElevFt_NAD83.zip
Gilead_ElevFt_NAD83.tfw		90 Bytes
Gilead_ElevFt_NAD83.tif		6.19 MB
Gilead_ElevFt_NAD83.tif-ColorRamp.SLD		2.08 KB

Related External Resources

Type: Related Primary Publication

Nystrom, E.A., Huston, C.J., and Welk, R.J., 2021, Bathymetry of New York City’s East of Hudson reservoirs and controlled lakes, 2017 to 2019: U.S. Geological Survey Scientific Investigations Report 2021-5057, 46 p., https://doi.org/10.3133/sir20215057.	https://doi.org/10.3133/sir20215057

Purpose

Data were collected to map the bathymetry of the New York City's East of Hudson drinking water reservoirs and controlled lakes (Amawalk Reservoir, Bog Brook Reservoir, Boyd Corners Reservoir, Cross River Reservoir, Croton Falls Reservoir, Diverting Reservoir, East Branch Reservoir, Kensico Reservoir, Kirk Lake, Lake Gilead, Lake Gleneida, Middle Branch Reservoir, Muscoot Reservoir, New Croton Reservoir, Titicus Reservoir, and West Branch Reservoir) to aid management of the reservoirs.

Geospatial bathymetry datasets for Lake Gilead, New York, 2017

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Related External Resources

Purpose

Map

Spatial Services

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Tags

Provenance

Additional Information

Raster Extension

Shapefile Extension

Raster Extension

Shapefile Extension

Raster Extension

Item Actions

Use Item

View Item as ...

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