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"name": "Bathymetric contour maps of lakes surveyed in Iowa in 2004",
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"url": "https://pubs.usgs.gov/publication/sim2949"
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"datePublished": "2006",
"dateModified": "2016-01-29",
"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.\nBathymetric 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.",
"description": "6 plates; metadata files",
"publisher": {
"@type": "Organization",
"name": "U.S. Geological Survey"
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"author": [
{
"@type": "Person",
"name": "Lund, Kris D. kdlund@usgs.gov",
"givenName": "Kris D.",
"familyName": "Lund",
"email": "kdlund@usgs.gov"
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{
"@type": "Person",
"name": "Linhart, S. Mike",
"givenName": "S. Mike",
"familyName": "Linhart"
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],
"funder": [
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"@type": "Organization",
"name": "Iowa Water Science Center",
"url": "https://www.usgs.gov/centers/cm-water"
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"name": "Iowa"
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"name": "Lake Darling",
"url": "https://geonames.org/4863929"
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