LITTLE COMFORT LAKE 2012 WATER QAULITY MONITORING REPORT
Little Comfort Lake
2012 Lake Grade: C+
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DNR ID #: 130054
Municipality: Chisago City
Location: Section 27 T33N-R21W
Lake Size: 36 Acres
Maximum Depth: 54 ft
Ordinary High Water Mark: 887.2 ft
49% Littoral
Note: Littoral area is the portion of the lake <15 ft
and dominated by aquatic vegetation.
Summary Points
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Little Comfort Lake was considered a eutrophic lake in 2012, based on the Carlson Trophic
State Index.
2012 represents a continued decline when compared to 2009 to 2011.
The decline in water quality correlates with an increase in growing season
precipitation and corresponding watershed runoff.
Curly leaf pondweed (invasive aquatic plants) are extensive in this lake.
The major land use is rural/agricultural.
The lake does stratify throughout the summer months.
2012 Summer Average for Phosphorus & Transparency
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2012 Water Quality Sample Readings
Date
5/5/2012 10:00
5/16/2012 13:00
6/3/2012 11:00
6/14/2012 11:00
7/4/2012 10:00
7/15/2012 13:00
7/27/2012 11:00
8/10/2012 13:00
8/24/2012 11:00
9/13/2012 15:00
9/27/2012 14:00
2012 Summer Average
Total Phosphorus
(mg/L)
0.028
0.4
0.059
0.045
0.043
0.045
0.085
0.052
0.075
0.051
0.063
Chlorophylla (ug/L)
3.1
6.4
16
17
22
38
29
9.1
9.1
5.6
8.1
Total Kjeldahl
Nitrogen (mg/L)
1.1
0.98
1.5
1.4
1.3
1.3
1.3
1
1.1
0.81
1.1
17.100
1.201
0.058
Water Quality
Threshold Exceeded
(0.04 mg/L or higher)
Phosphorus & Chlorophyll Trend (2006-2012)
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Secchi Disk
Depth (m)
2.1
1.9
1
1.1
1
1.1
1.1
1.5
1.9
2
2.2
1.433
Water Quality
Threshold
Exceeded
(1.4 meters or
less)
LITTLE COMFORT LAKE
SURFACE WATER ELEVATION STATISTICS
Outlet Elevation (approx) = 885.7
Ordinary High Water Level (OHW) elevation: 887.2 ft
100 year = 892.1
Highest recorded: 887.81 ft (05/08/2001)
Lowest recorded: 885.41 ft (09/10/2003)
Datum: NGVD 29 (ft)
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