| Abstract: | The U.S. Geological Survey, in cooperation with the Iowa Department of Natural Resources, conducted bathymetric surveys on six lakes in Iowa during 2004 (Lake Darling, Littlefield Lake, Lake Minnewashta, Nine Eagles Lake, Prairie Rose Lake, and Upper Gar Lake). The surveys were conducted to provide the Iowa Department of Natural Resources with information for the development of total maximum daily load limits, particularly 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. Two of the lakes surveyed in 2004, Lake Minnewashta and Upper Gar Lake, are natural lakes. The other four lakes are manmade lakes with fixed spillways.
Bathymetric data were collected using a boat-mounted, differential global positioning system, echo depth-sounding equipment, and computer software. Data were processed with commercial hydrographic software and exported into a geographic information system for mapping and calculating area and volume. Lake volume estimates ranged from 83,924,000 cubic feet (1,930 acre-feet) at Lake Darling to 5,967,000 cubic feet (140 acre-feet) at Upper Gar Lake. Surface area estimates ranged from 10,660,000 square feet (240 acres) at Lake Darling to 1,557,000 square feet (36 acres) at Upper Gar Lake. |
| Genre: | USGS Numbered Series |
| ProdID: | 79623 |
| Citation Author: | Linhart, S. Mike; Lund, Kris D. |
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| Citation Language: | ENGLISH |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | 6 plates; metadata files |
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| Citation Public Comments: | Prepared in cooperation with the Iowa Department of Natural Resources |
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| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 2949 |
| Citation Search Results Text: | Bathymetric Contour Maps of Lakes Surveyed in Iowa in 2004; 2006; SIM; 2949; Linhart, S. Mike; Lund, Kris D. |
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| Citation Year: | 2006 |
| Type: | citation/reference |
| Text: | Bathymetric Contour Maps of Lakes Surveyed in Iowa in 2004; 2006; SIM; 2949; Linhart, S. Mike; Lund, Kris D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/2006/2949/ |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80663.htm |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80664.htm |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80665.htm |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80661.htm |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80660.htm |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_80662.htm |
| Date Other: | Sat, 10 Feb 2007 00:00 -0600 |
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