KBS Habitats: Bristol Lake PDF Print E-mail

(42º29'09'' N 85º14’53'' W)Bristol

Bristol Lake is an oligotrophic (TP = 11.5) dimictic lake located in Barry County. It has a public access ramp and the shoreline is extensively developed. It has a large surface area (62.8 ha) and a maximal depth of 13.4 m. The lake has two basins and a relatively steep shoreline with a depth ratio of 0.49. The high vertical light attenuation coefficient of 0.54 corresponds to depleted oxygen concentrations below the summer thermocline around 6 meters depth. Typical summer cladocerans are Daphnia dentifera and D. pulicaria and D. retrocurva.

Lake characteristics
surface area (ha)
62.8
maximal depth (m)
13.4
mean depth (m)
6.5
mean:max
0.49
relative depth (%)
1.50
light attenuation coefficient
0.49
pH
7.7
conductivity (µS/cm)
422.1
Chl-a (µg/L)
5.8
TP spring (µg/L)
11.5
TP summer (µg/L)
10.9
TN (µg/L)
442.4
POC (µg/L)
784.1
C:N (molar)
10.0
C:P (molar)
301.9

Bristol500

Data from Litchman and Tessier Labs, KBS; Photo: M.A. Duffy; Bathymetric map via - www.michigan.gov/dnr