2009 Secchi Disk (Clarity) & Fecal Coliform testing results

2009 Secchi Disk testing results
The Lake Level (above sea level) is also shown.

The "Legal Lake Level", established in 1972, is:
755.0 feet above sea level in the Summer (April 1^st to October 1^st)
753.0 feet above sea level in the Winter (October 1^st to April 1^st)

Sites Where Secchi Disk Readings Are Taken

The first, & only, Secchi Disk tests was done on September 23^th starting at 10:00 AM & the Lake Level was 755.1 feet.
Conditions: 0.6" rain night before, mostly sunny & 70 degrees.

Northwest Cove with a depth of 27’ had a 10.25'

Little Baldwin with a depth of 28’ had a 14.25’

The Deep Basin with a depth of 58’ had a 10.5'

The South End with a depth of 38' had a 11.25’

Since there was only 1 Secchi reading in 2008 & 2009 we can only report
"Average", "Best" & "Worst" for the prior years.

Northwest Cove - 26’

September 23, 2009 - - 10.25’

September 19, 2008 - - 09.0’

2007 Average = 15.1’ * * * * 2007 Best = 22.5’ * * * * 2007 Worst = 11.25’

2006 Average = 12.5’ * * * * 2006 Best = 18’ * * * * 2006 Worst = 8.5’

2005 Average = 10.25’ * * * * 2005 Best = 12.75’ * * * * 2005 Worst = 8.25’

Little Baldwin – 27’

September 23, 2009 - - 14.25’

September 19, 2008 - - 09.0’

2007 Average = 16.9’ * * * * 2007 Best = 27’ (Hit Bottom) * * * * 2007 Worst = 12.75’

2006 Average = 13.77’ * * * * 2006 Best = 17.5’ * * * * 2006 Worst = 11’

2005 Average = 10.075’ * * * * 2005 Best = 14’ * * * * 2005 Worst = 8’

The Deep Basin – 57’

September 23, 2009 - - 10.5’

September 19, 2008 - - 09.25’

2007 Average = 16.4’ * * * * 2007 Best = 29.5’ * * * * 2007 Worst = 11’

2006 Average = 14.25’ * * * * 2006 Best = 25.25’ * * * * 2006 Worst = 8.5’

2005 Average = 10.775’ * * * * 2005 Best = 13’ * * * * 2005 Worst = 6.75’

The South End – 37’

September 23, 2009 - - 11.25’

September 19, 2008 - - 08.0’

2007 Average = 15.2’ * * * * 2007 Best = 23.5’ * * * * 2007 Worst = 11.75’

2006 Average = 13.17’ * * * * 2006 Best = 18.5’ * * * * 2006 Worst = 8’

2005 Average = 10.25’ * * * * 2005 Best = 12.25’ * * * * 2005 Worst = 7’

2009 Fecal Coliform results

Fecal Coliform tests are scheduled for July thru September, at sites around the Lake.
The USEPA recommendations (in 2000) are:
for body contact recreation is fewer than 200 colonies per 100 mL;
for fishing and boating, fewer than 1000 colonies per 100 mL.

The first set of Fecal Coliform tests were done at various sites around Baldwin Lake in July 2009. The results
of those tests, in random order, were: 18 -- 8 -- 12 -- 5 -- 91 -- 730 -- 39 -- 4 -- 13 -- 7

The second (last) set of Fecal Coliform tests were done at various sites around Baldwin Lake September 17, 2009.
The results of those tests, in random order, were: 5 -- 17 -- 2 -- 16 -- 160 -- 10 -- 14 -- 13 -- 3 -- 14