|
The final water level reading for 2011 was 979.02 on November 28 (west bay).
The last of the 2 lake level gauges was removed from the lake on 11/28/11 for the season.
Thank you to Cindy Keating (west bay) and Fred Lang (east bay) who volunteered their time to monitor our lakes’ water levels for the MN DNR, LSIA, and our website for yet another year!
Highest Level this year 981.58 on May 24, 2011
Highest Level ever recorded 982.40 on June 28, 2002
Lowest level this year 979.02 on November 17, 2011
Lowest level ever recorded 977.78 on August 10, 2007
FEMA 100 year flood level for Lake Sarah (27-0191) 981.20
click here to view the FEMA 1992 Flood Insurance Study in .pdf
Ordinary High Water Level for Lake Sarah (27-0191) 979.90 (revised from 979.50 as of 10/13/2003 - Minnesota DNR OHWL study in.pdf) The ordinary high water level (OHWL) is a reference point that defines the DNR's regulatory authority over development projects that are proposed to alter the course, current, or cross section of public waters and public waters wetlands. For lakes and wetlands, the OHW is the highest water level that has been maintained for a sufficient period of time to leave evidence upon the landscape. The OHWL is commonly that point where the natural vegetation changes from predominately aquatic to predominantly terrestrial. For watercourses, the OHWL is the elevation of the top of the bank of the channel. For reservoirs and flowages, the OHWL is the operating elevation of the normal summer pool. The OHWL is also used by local units of government as a reference point from which to determine structure setbacks from water bodies and watercourses. See also legal definition under Hydrographics Program.
For more information on determining OHWL please see "Guidelines for Ordinary High Water Level (OHWL) Determinations".
|
|
Lake Sarah Water Levels Charts
|
|
Water Level Charts by Year
|
|
Thanks for the charts Fred!
|
Special Buoy installed off North Shore Drive. Mike Peterson spoke with Tony Brough at Henn Cty. Environmental Services regarding the rockpile near North Shore Drive. Tony did a depth survey of the rockpile off Wise's on North Shore Drive and determined a new buoy would be appropriate. Tony has installed the new buoy lakeward of the danger area, (see the purple circle on the map). Tony will remove and reinstall the danger buoy annually. He also mapped out the existing rock pile with the 3 danger buoys already in place using GPS and map overlays to verify proper placement and update their records. His map can be viewed by clicking here (in .pdf format - Adobe acrobat reader required). He mentioned that the best way for Hennepin County to react to such hazards in the future is for people that "discover" them to report the incident to the Henn. County Sheriff Water Patrol (612)596-9880,
|
|
