CT ECO Basic Data Guide

Lake Bathymetry

Example of Lake Bathymetry

Description

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.

Purpose

This information was compiled to depict water depth and map the bottom of selected water bodies open to the public for fishing in Connecticut.

Use Limitations

Bathymetric information is only included for the 125 waterbodies listed in the GIS Metadata. These data were collected and compiled through a variety of methods and no specific scale is recommended. There are no distribution restrictions, but the Connecticut Department of Environmental Protection should be cited on any published maps using this dataset. Due to differences in data capture dates and spatial accuracy, the Lake Bathymetry shoreline and depth contour data may not line up exactly with shoreline features in other hydrography related data from DEP such as Connecticut Hydrography, Connecticut Waterbody, Connecticut Named Waterbody and Connecticut Surface Water Quality Class.

Dataset Information

  • Status - Not presently updated, but may be updated in the future.
  • Date of Data - 2003
  • Map Scale and Accuracy - Varies based on data collection methods.

Additional Documentation

  • Lake Bathymetry Contour GIS Metadata – Contains technical documentation describing the Lake Bathymetry Line feature data and the data sources, process steps, and standards used to collect, digitize, and store this information in a geographic information system (GIS).
  • Lake Bathymetry GIS Metadata – Contains technical documentation describing the Lake Bathymetry Polygon feature data and the data sources, process steps, and standards used to collect, digitize, and store this information in a geographic information system (GIS).

Originators

GIS Data Download

  • Lake Bathymetry data is downloadable from DEEP GIS Data.
  • Connect GIS and AutoCAD software to this information online using the Elevation and Bathymetry CT ECO Map Service.