Prepared in cooperation with the Iowa Department of Natural Resources
By S. Mike Linhart and Kris D. Lund
U.S. Geological Survey Scientific Investigations Map 2933
AVAILABLE ONLINE ONLY
The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources (IDNR), conducted bathymetric surveys on four lakes in Iowa during 2003 (Don Williams Lake, Easter Lake, Lake Macbride, and Lake Meyer). The purpose of the surveys is to provide the IDNR with information for the development of total maximum daily load (TMDL) limits, in particular, for estimating sediment load and deposition rates. The bathymetric surveys can provide a baseline for future work on sediment loads and deposition rates for these lakes. All lakes surveyed in 2003 are man-made lakes with fixed spillways.
Bathymetric data were collected using boat-mounted, differential global positioning system (GPS) equipment, echo depth-sounding equipment, and computer software. Data were processed with commercial hydrographic software and exported into a geographic information system (GIS) for mapping and calculation of area and volume. Lake volume estimates ranged from 590,501,000 cubic feet (13,600 acre-feet) at Lake Macbride to 17,831,000 cubic feet (410 acre-feet) at Lake Meyer. Surface area estimates ranged from 38,118,000 square feet (875 acres) at Lake Macbride to 1,373,000 square feet (32 acres) at Lake Meyer.
Bathymetric Contours for Don Williams Lake, Boone County, Iowa (PDF is 0.7 MB)
Bathymetric Contours for Easter Lake, Polk County, Iowa (PDF is 0.5 MB)
Bathymetric Contours for Lake Macbride, Johnson County, Iowa (PDF is 1.4 MB)
Bathymetric Contours for Lake Meyer, Winneshiek County, Iowa (PDF is 0.4 MB)
If you have Adobe Acrobat Reader installed on your computer, you may view or print the PDF version of this report. If you do not have Acrobat Reader, you may download it here.
Users with visual disabilities can visit this site for conversion tools and information to help make PDF files accessible.
|AccessibilityFOIAPrivacyPolicies and Notices|
|U.S. Department of the Interior, U.S. Geological Survey
Persistent URL: https://pubs.water.usgs.gov/sim20062933
Page Contact Information: USGS Publishing Network
Last modified: Tuesday, September 19 2006, 12:24:12 PM