Lake Operations

Lake Conditions

DELAVAN LAKE DATA- JULY 14, 2016

A-2 Center:  Secchi Disc was 9 ft, Water Temp was 77.0 degrees, & Appearance Murky 

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Normal Lake Level is 927.10 (Winter) and 927.86 (Summer)

The goal for the DNR for optimal lake level is 927.86 

Average Lake Level for July, 2016 was 927.86

For more information:

http://dnr.wi.gov/lakes/lakepages/LakeDetail.aspx?wbic=793600

http://waterdata.usgs.gov/wi/nwis/uv/?site_no=05431016&agency_cd=USGS

General Guidelines:

"Ice On"
In case the lake should be frozen in the morning, after a cold calm night, but then breaks up in the afternoon with wind and sun, I don't count that as a freeze-up date.  However, if a lake freezes on one day, stays frozen for a few days, then breaks up for some days before a final freeze-up for the winter, I record all the freezing and opening dates so that I can determine the total number of days each winter that the lake was covered with ice - regardless of whether it is safe for walking.  In the simplest case, a lake may freeze on one day and then stay frozen all winter.  In some winters, however, the freeze-up process can be quite complex with multiple freezing and openings.

"Ice-Off"
The lake is considered thawed when it is possible to boat from any shore to the deepest part of the lake without encountering ice.

2016
Ice on Date - January 11, 2016
Ice off Date - March 9, 2016

2015
Ice on Date - January 2, 2015
Ice off Date - April 2, 2015 

2014
Ice on Date - December 16, 2013
Ice off Date - April 11, 2014

  HISTORICAL INFORMATION

            TOTAL DAYS
WINTER   DATE ICE ON   DATE ICE OFF   OF ICE COVER
1983-1984   12/19/1983   4/4/1984   107
1984-1985   1/4/1985   3/27/1985   82
1985-1986   12/21/1985   3/28/1986   97
1986-1987   12/13/1986   3/16/1987   93
1987-1988   12/27/1987   3/25/1988   89
1988-1989   12/12/1988   12/22/1988   10
    12/26/1988   3/29/1989   93
1989-1990   12/7/1989   3/14/1990   97
1990-1991   12/26/1990   3/23/1991   87
1991-1992   12/3/1991   12/7/1991   4
    12/16/1991   3/9/1992   84
1992-1993   12/24/1992   4/10/1993   107
1993-1994   12/23/1993   3/29/1994   96
1994-1995   1/10/1995   3/19/1995   68
1995-1996   12/16/1995   3/31/1996   106
1996-1997   12/26/1996   3/28/1997   92
1997-1998   1/11/1998   2/26/1998   46
1998-1999   12/30/1998   3/21/1999   81
1999-2000   1/20/2000   2/27/2000   38
2000-2001   12/13/2000   4/7/2001   115
2001-2002   1/2/2002   3/17/2002   74
2002-2003   12/4/2002   12/19/2002   15
    1/14/2003   3/28/2003   73
2003-2004   1/9/2004   3/24/2004   75
2004-2005   12/25/2004   3/30/2005   95
2005-2006   12/7/2005   3/28/2006   111
2006-2007   1/17/2007   3/25/2007   67
2007-2008   12/20/2007   4/5/2008   94
2008-2009   12/16/2008   3/18/2009   93
2009-2010   12/16/2009   12/25/2009   10
2009-2010   12/29/2009   3/25/2010   87
2010-2011   12/17/2010   3/23/2011   96
2011-2012   1/20/2012   1/31/2012   12
    2/10/2012   3/11/2012    30 
2012-2013   1/22/2013   4/10/2013   78 
2013-2014
2014-2015
  12/16/2013
1/2/2015
  4/11/2014
4/2/2015
  116
90
2015-2016   1/11/2016   3/9/2016   58

 

Document Available:

Water Classification in Wisconsin:

http://dnr.wi.gov/lakes/waterquality/

  DELAVAN LAKE BUOY MAP

Buoy Map