This file geodatabase includes the following individual layers:

Lake Bathymetric Contours: Contours lines corresponding to lake bathymetry, digitized from existing lake contour maps produced by the DNR Ecological Services Lake Mapping Unit. Use in combination with other Lake Bathymetric GIS products. Classify and label contour lines with depth values. Convert to polygons and calculate lake surface area for each depth interval. Overlay onto bathymetric DEM shaded relief image.

Lake Bathymetric Digital Elevation Model (DEM): A digital elevation model (DEM) representing lake bathymetry. Cell size is most often 5m, although 10m cells were used for some lakes to reduce grid file size. This grid contains one attribute DEPTH that represents lake depth in (negative) feet. Use in combination with other Lake Bathymetric GIS products. Reclassify DEM based on various depth intervals. Calculate zonal and neighborhood statistics. Derive slope surface. Model depth data with other cell-based parameters (e.g., slope, vegetation, substrate, chemistry) to predict habitat suitability, functional niches, etc. (Note: These raster analyses require Spatial Analyst or Arc Grid.)

Lake Bathymetric Outline: Lake outline as digitized from 1991-92 aerial photography (1m DOQ's). Use in combination with other Lake Bathymetric GIS products. Overlay onto bathymetric contour lines and bathymetric DEM shaded relief image.

Lake Bathymetric Metadata: Metadata for the Lake Bathymetry layers. Each lake is represented by a polygon. The polygon attributes contain information about when the bathymetry fieldwork was completed. This layer can be used to query for bathymetry created on or between certain dates, or to ascertain what date a particular lake was investigated. The dates are in a text field. Date formats vary from record to record.

See full Data Guide here. Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also called bathymetric contours, that define lines of equal water depth in feet. This information was collected and compiled by the State of Connecticut, Department of Environmental Protection over a period of time using a variety of different techniques and equipment including manual depth soundings, use of an electronic depth sounder in conjunction with a GPS receiver to locate the boat, and digitizing previously published bathymetry maps. Data is compiled at a variety of scales and resolutions, depending on the collection method used for a particular waterbody. A list of the waterbodies included in this layer can be viewed in the GIS Metadata for Lake Bathymetry. This information was used to publish bathymetric maps in A Fisheries Guide to Lakes and Ponds of Connecticut, Robert P. Jacobs, Eileen B. O'Donnell, and William B. Gerrish, Connecticut Department of Environmental Protection Bulletin 35, 2002, SBN 0-942085-11-6.

See full Data Guide here. Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also called bathymetric contours, that define lines of equal water depth in feet. This information was collected and compiled by the State of Connecticut, Department of Environmental Protection over a period of time using a variety of different techniques and equipment including manual depth soundings, use of an electronic depth sounder in conjunction with a GPS receiver to locate the boat, and digitizing previously published bathymetry maps. Data is compiled at a variety of scales and resolutions, depending on the collection method used for a particular waterbody. A list of the waterbodies included in this layer can be viewed in the GIS Metadata for Lake Bathymetry. This information was used to publish bathymetric maps in A Fisheries Guide to Lakes and Ponds of Connecticut, Robert P. Jacobs, Eileen B. O'Donnell, and William B. Gerrish, Connecticut Department of Environmental Protection Bulletin 35, 2002, SBN 0-942085-11-6.

READ-ONLYThis feature layer is a polyline feature dataset of bathymetric contours for certain Indiana lakes, depicting the depths of the water with the shoreline of each lake as elevation 0. Contour intervals vary depending upon the lake. Lakes were surveyed using Biosonics DTX Echosounder surface unit and 200 kHz and 420 kHz transducers. The contour values of some lakes were adjusted to coincide with the lake's legal gauge level. Contour values are feet below the surface. Updated 4/16/19

Bathymetry of Lake Superior has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. This project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA Great Lakes Environmental Research Laboratory (GLERL) and the Canadian Hydrographic Service(CHS). Bathymetric data have been collected from the Great Lakes in support of nautical charting for at least 150 years by the US Army Corp. of Engineers (before 1970), the NOAA National Ocean Service (NOS)(after 1970), and the Canadian Hydrographic Service. No time frame has been set for completing bathymetric contours of Lake Superior, though a 3 arc-second (~90 meter cell size) grid is available.

10 meter resolution bathymetric data for Seneca Lake

Data can be downloaded here:

KMZ

https://gisdata.ny.gov/GISData/State/NYSDEC/SenecaLake_Bathymetry/10m-public-release-bathy.kmz

Associated files:

Tif and legend

https://gisdata.ny.gov/GISData/State/NYSDEC/SenecaLake_Bathymetry/10m-public-release-bathy.tif

XML

https://gisdata.ny.gov/GISData/State/NYSDEC/SenecaLake_Bathymetry/10m-public-release-bathy.tif.aux.xml

TXT

https://gisdata.ny.gov/GISData/State/NYSDEC/SenecaLake_Bathymetry/10mx10m_FINAL_SENECA_PUBLIC_RELEASE_BATHY.txt

Bathymetry of Lakes Michigan, Erie, Saint Clair, Ontario and Huron has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible. Lake Superior bathymetry partially completed. The present contours and grids have been partially derived and completely compiled here at NOAA's National Geophysical Data Center (NGDC) using a variety of sources of data including the NOS Hydrographic data base and the Canadian Hydrographic Service (CHS) smooth sheets. This project is a cooperative effort between investigators at the NGDC, the NOAA Great Lakes Environmental Research Laboratory and the Canadian Hydrographic Service. Bathymetric data used for this project have been collected from the Great Lakes in support of nautical charting for at least 150 years by the US Army Corp. of Engineers (before 1970), the NOAA National Ocean Service (after 1970), and the CHS.

Digital Elevation Model for the Great Salt Lake, lake bed bathymetry. This is an integration of data from the National Elevation Dataset and multiple bathymetry datasets as described in the README.txt file.

This coverage contains 1 foot contours of Iowa lakes. The data is for state managed lakes in Iowa and was collected from multiple sources.

Bathymetry of lake bottoms and non-wadeable streams for detecting environmental change as well as for determining lake morphology, habitat features, and water quality.

The data set includes the bathymetry of 16 glacial lakes (Bechung Tsho, Bencoguoco, Bielongco, Cirenmaco, Galong Co, Guangxieco, Jialong Co, Jinwongco, Luggye Tsho, Maqiongco, Poiqu No.1, Ranzeriaco, Raphstreng Tsho, Rewuco, Shishapangma No.1, Talongco): 1. ".csv" is the bathymetry measurements data, the name is lake name+collection time, and the coordinate system is WGS1984; 2. ".grd" is the bathymetric interpolation by Kriging method, "WGS" is WGS1984 geographic coordinate system, ".Prj" is UTM projection coordinate system; 3. ".srf" is the project of software Surfer (v15), using Prj projection; 4. "Lake name_Point" is the lake bathymetry data of the UTM projection coordinate system, which is the same as the ".csv" data.

Plese cite as: Zhang, G., T. Bolch, T. Yao, D. R. Rounce, W. Chen, G. Veh, O. King, S. K. Allen, M. Wang, and W. Wang (2023), Underestimated mass loss from lake-terminating glaciers in the greater Himalaya, Nature Geoscience, doi: 10.1038/s41561-023-01150-1

A bathymetric layer for Lake Superior of unknown origin.Date: 2007-10-16

Lake_Bathymetry_DNR_IN is a polyine feature dataset of bathymetric contours for certain Indiana lakes, depicting the depths of the water with the shoreline of each lake as elevation 0. Contour intervals vary depending upon the lake. Lakes were surveyed using Biosonics DTX Echosounder surface unit and 200 kHz and 420 kHz transducers. The contour values of some lakes were adjusted to coincide with the lake's legal gauge level. Contour values are feet below the surface.Updated 4/16/19

Bathymetry is the measurement of water depth in lakes. From the 1940s to the 1990s, the Ministry of Natural Resources and Forestry produced bathymetry maps for over 11,000 lakes across Ontario. The data can be used by the general public and GIS specialists for: * climate change modelling * fish monitoring and other ecological applications * hydrologic cycle modelling * recreational fishing maps * watershed-based water budgeting The maps were created using simple methods to determine lake depths. They were meant for resource management purposes only. Little effort was made to identify shoals and other hazards when creating these bathymetric maps. Since this data was collected, many constructed and naturally occurring events could mean that the depth information is now inaccurate, so these maps should not be used for navigational purposes. In many cases, these maps still represent the only authoritative source of bathymetry data for lakes in Ontario. Technical information These maps are being converted to digital GIS line data which can be found in the Bathymetry Line data class. The Bathymetry Index data class identifies if GIS vector lines have been created and the location of mapped lakes. The historic paper maps have been scanned into digital files. We will add new digital files to this dataset if they become available. The digital files have been grouped and packaged by regions into 13 compressed (zipped) files for download. Note: package 99 contains scanned maps where the location shown on the map could not be determined.

One-foot depth contours for approximately 250 lakes within Hillsborough and Polk County, Florida. Contours were generated from Water Institute staff as part of our lake assessment program. We use bathymetric mapping equipment operated from small boats to collect position and depth (XYZ) data, which is then processed to create three-dimensional datasets. These data are used to create a detailed bathymetric map and morphological characteristics tables. Because we use shallow-draft kayaks and johnboats, we are able to access small lakes and ponds and navigable rivers, streams, and creeks. Bathymetry data were correct at the time lakes were assessed, but lake levels change constantly. Bathymetry maps provide information about relative depths only, and should not be used for navigation.

New land-bathymetry and land-lake surface elevation models were produced for the Lake Superior region. The models combine Shuttle Radar Topography Mission (SRTM) topography data with lake surface elevation and bathymetry data sets for Lakes Superior, Michigan, and Huron. The SRTM data set was chosen because it spans the international border and has relatively high resolution at 30 m cell size. These data were subsequently used for aeromagnetic data processing and gravity data reduction.

These data are bathymetry (lake bottom elevation) in XYZ format (Easting, Northing, Elevation), generated from the May 30–June 1, 2023, bathymetric survey of Buckhorn Lake, Kentucky, from the dam to CR-1475 (19.5 miles total reach length). Hydrographic data were collected using a RESON 210 kHz NaviSound single-beam echosounder (SBES) with a Hemisphere A222 integrated global navigation satellite system (GNSS) smart antenna. The SBES and GNSS antenna were mounted on a marine survey vessel, and data were collected as the survey vessel traversed the lake along planned survey lines. A total of 380 survey lines were oriented approximately perpendicular to the primary flow direction at generally 250-foot or 500-foot spacing. Data collection software (HYPACK) integrated and stored the depth and position data from the SBES and GNSS antenna in real time. Water-surface elevations were measured at the boat ramp at the dam twice a day (before and after surveying) with a Trimble R8 survey-grade integrated GNSS system with real-time kinematic (RTK) observations to convert measured bathymetric depths to elevations referenced to the North American Vertical Datum of 1988 (NAVD 88). RTK observations were made using the Kentucky Continually Operating Reference System (KYCORS) network operated by the Kentucky Transportation Cabinet. Data processing required computer software to extract the bathymetric data from the raw data files and to compile and map the information. The final comma-delimited file contains columns of Easting and Northing in feet North American Datum of 1983 (NAD83) Kentucky State Plane Single Zone (FIPS code 1600), and Elevation in feet NAVD 88. This dataset was collected in cooperation with the U.S. Army Corps of Engineers – Louisville District.

Bathymetry of Lake Erie and Lake Saint Clair has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible. This project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA Great Lakes Environmental Research Laboratory (GLERL) and the Canadian Hydrographic Service(CHS). Bathymetric sounding data employed in compiling the one-meter bathymetry (National Geophysical Data Center, 1998) were collected over a 100-year period for purposes of navigation safety and nautical charting by the U. S. Army Corps of Engineers, the NOAA Coast Survey, and the Canadian Hydrographic Service. These bathymetric data, totaling several hundred thousand soundings, are separated four ways in existing archives: by whether they exist in digital form or reside only on paper sheets; and by whether they were collected by the U. S. or Canada. Final assembly of the new bathymetry has resulted from synthesis of bathymetric data from the four sources. Spacing of data control tracklines ranges from 500 to 2500 meters for the open lake and from 125 to 500 meters for nearshore areas. In preparation for bathymetric contouring, digital soundings were converted to metric units and computer plotted in color according to depth range. Contours in metric units were generated directly on overlays from paper sheets and then reduced to compilation scale and patched in. Compilation sheets were scanned and vectorized; and the resulting digital bathymetric contour data constitutes the primary product. The data were hand contoured by geomorphologists to capture and portray the maximum information available, resulting in a degree of detail not attainable with machine contouring and the density of available data. Bathymetric contours were prepared by geologists using sounding data contained in the paper archives at the scale of the survey sheets (scales ranging from 1: 100,000 to 1: 10, 000); or from sounding data contained in digital data bases at standard scales of either 1: 100,000 or 1: 50,000. Details concerning the methods of compilation are given in the western Lake Erie paper (Holcombe, et al., 1997). Bathymetric contours have been spatially reconciled with the NOAA Coast Survey nominal scale 1:80,000 digital vector shoreline, which by definition coincides with the Lake Erie low water datum, the zero-depth employed for bathymetric surveys and nautical charting.

All available bathymetry and related information for the Alberta Lake Bathymetry dataset were collected from the source data, hard copy maps digitized where necessary, and subsequently merged into the final dataset. The data was validated against more recent SRTM (Shuttle Radar Topography Mission) and IRS (Indian Remote Sensing) imagery and corrected where necessary. The published dataset contains the lake boundary and bathymetric contours formatted as a downloadable vector data.

Analysis of ‘Lake Bathymetry Contours Polygon’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/f69ce236-b550-4555-a937-7c90a9883f1a on 27 January 2022.

--- Dataset description provided by original source is as follows ---

Lake Bathymetry describes the water depth for selected reservoirs, lakes, ponds, and coves in Connecticut. It includes depth contours, also called bathymetric contours, that define lines of equal water depth in feet. This information was collected and compiled by the State of Connecticut, Department of Environmental Protection over a period of time using a variety of different techniques and equipment including manual depth soundings, use of an electronic depth sounder in conjunction with a GPS receiver to locate the boat, and digitizing previously published bathymetry maps. Data is compiled at a variety of scales and resolutions, depending on the collection method used for a particular waterbody. A list of the waterbodies included in this layer can be viewed in the GIS Metadata for Lake Bathymetry. This information was used to publish bathymetric maps in A Fisheries Guide to Lakes and Ponds of Connecticut, Robert P. Jacobs, Eileen B. O'Donnell, and William B. Gerrish, Connecticut Department of Environmental Protection Bulletin 35, 2002, SBN 0-942085-11-6.

--- Original source retains full ownership of the source dataset ---