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Lake Bottom Study 1999 - Silt Depths Map
This visual presentation of where the silt is in Lake Okabena is built upon the 1999 bottom study data.
The numbers on the lake are silt depths at the point of a 1999 bottom test that are less than 5 feet of silt.
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SUMMARY R E C A P of 1 9 9 9 D a t a B Y S I L T D E P T H R A N G E |
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| A v e r a g e D e p t h o f | Average % | # in this | # places Silt | ||||
| Hard Bottom | Silt | Water | Silt | Depth range | More than Water | ||
| 10+ Ft Silt | 20.9 | 11.2 | 9.7 | 115.6% | 8 | 6 | |
| 9 to 10 Ft Silt | 18.6 | 9.5 | 9.2 | 103.6% | 6 | 4 | |
| 8 to 9 Ft Silt | 18.1 | 8.3 | 9.8 | 85.1% | 13 | 4 | |
| 7 to 8 Ft Silt | 15.6 | 7.5 | 8.2 | 91.5% | 21 | 14 | |
| 6 to 7 Ft Silt | 14.6 | 6.4 | 8.1 | 79.3% | 14 | 0 | |
| 5 to 6 Ft Silt | 12.8 | 5.5 | 7.3 | 75.2% | 25 | 0 | |
| 4 to 5 Ft Silt | 12.4 | 4.6 | 7.8 | 58.4% | 19 | 0 | |
| 3 to 4 Ft Silt | 11.2 | 3.4 | 7.8 | 43.6% | 17 | 0 | |
| 2 to 3 Ft Silt | 9.3 | 2.3 | 7.0 | 33.6% | 27 | 0 | |
| 1 to 2 Ft Silt | 8.2 | 1.5 | 6.7 | 21.7% | 42 | 0 | |
| < 1 ft Silt | 5.9 | 0.6 | 5.3 | 11.1% | 27 | 0 | |
| 219 | 28 | ||||||
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This study was sponsored by the Southwest Minnesota Fishing Club, Nobles County Environmental Services Department,
Okabena-Ocheda Watershed District and Nobles Soil and Water Conservation District. Labor was provided by: The Southwest Minnesota Fishing Club, The Nobles Soil and Water Conservation District, Nobles County Environmental Services Department The Okabena-Ocheda Watershed District paid for the survey The Okabena-Ocheda-Bella Clean Water Partnership Board may have paid part of the cost of publishing the brochure Zieske Land Surveying of Windom, MN was paid to do the survey work, Houston Engineering of Fargo, ND was hired to draw the topographic map of the lake bottom for the brochure The Excel spreadsheet analysis, graphic images and presentation were created by Bob Rohrer in 2007 |
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| Original Data Collection Sheets | 1999 Lake Map ( originally 24' x 3.5") | |||||
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These are written results of each test from
the day of the testing in 1999 for
water depth and hard bottom Water Depth 1 2 3 4 5 6 7 8 Hard Bottom 1 2 3 4 5 6 7 8 Each document is an image approx 100 kb |
Choose a size that you can display or
print to the level of detail you need
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Questions, needs, and issues on Design or Function should be addressed to the Webmaster@wgtn.net
Designed by Rohrer & Associates 2007 |
