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ICE LAKE
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  Ice Lake
ICE LAKE (aka Crystal) ID 31-372 Itasca County @ Grand Rapids, MN

Morohometry

Elevation = ~390 km (1279' MSL)

Ao = 16.6 ha (41 acres)

Aw = 85.4 ha (211 acres)

Zmax = 16.1 m

Zmean = 7.0 m

V = 1.16 x 106 m3

Aw:Ao = 5.1 : 1

Shoreline = 1.6 km

Littoral area = 32%

HRT = 2.6 ± 0.9 yrs (30 year record)

Watershed

11% Urban (6 storm sewers)

35% Wetland/Water

54% Forest

<1% Grassland/Shrubs

<1% Other

Water quailty

Summer Epilimnion
May through September
(1998 means, ±sd, range)

Secchi = 3.4 ± 0.8 m (2.2 - 4.3 m)
Chlorophyll a = 1.4 ± 0.6 ppb (<1 - 4.7)
TP = 9 ± 1 ppb (7 - 10 ppb)
NO3-N = 5 ± 6 ppb (<5 - 14 ppb)
NH4-N = 8 ± 6 ppb (<5 - 11 ppb)
TN = 432 ± 44 ppb (387 - 502 ppb)
Alkalinity = 45 (low, but not acid sensitive)
pH = 6.5 - 8.3
EC = 114 µS/cm

Summer Hypolimnion
May through September
(1998 means, ±sd, range)

TP = 35 ± 13 ppb (21 - 50 ppb)
NO3-N = 40 ± 35 ppb (<lod - 14 ppb)
NH4-N = 217 ± 96 ppb (78 - 296 ppb)
TN = 760 ± 124 ppb (587 - 881 ppb)

Shoreline cabins

28 perennial
(17 1st tier, 11 2nd tier)

0 summer
all on city sewer

Misc

Stratified in summer; limited spring mixing in 1998 and 1999

Ice Out dates:
April 11, 1998
April 9, 1999

Fishery

1983
Bluegill
Sunfish
Bullhead
Northern Pike

 

Trophic status (Carlson TSI)

42 (mesotrophic)

 

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date last updated: Sunday March 07 2004