Recent Lake Survey Summaries

Here are preliminary summaries of recent sampling not yet posted on LakeFinder, or are survey types not found there. Different gear target fish species and sizes quite differently; for example, northern pike and walleye are better caught by gill nets, while bluegill are better caught with trap nets. Values of black crappie might be from either net type. Spring ("ice-out") sampling targets northern pike, walleye, or muskellunge. Our net-based surveys under-sample largemouth bass; electrofishing better evaluates bass abundances and size structures, but requires extra sampling with different equipment.

Go To Other Surveys From 2007-2012

 

Spring Sampling 2014

Soon after ice-out, we checked Medicine Lake walleye to see size and age composition of larger adult fish. We also measured the northern pike and largemouth bass captured. Results are from 36 nets, set in different locations daily.

Lake
(County)
Date
Fish Species Number Average Length (in) Max. Length (in)
Medicine Walleye 50 21.0 27.6
(Hennepin) Northern Pike 173 22.9 35.0
4/17-22 Largemouth Bass 27 15.9 19.8

 

2013 Preliminary Fish Survey Summaries

Lake (County)
Date
Fish Species No. per net Average Length (in) Max. Length (in)
Bush (Hennepin) Northern Pike 19 20.0 27.1
6/10-13 Black Crappie 2 7.4 10.8
Bluegill 19 4.4 8.1
Yellow Bullhead 6 11.9 14.8
Hyland (Hennepin) Walleye 3 13.8 16.3
6/18-21 Black Crappie 3 5.4 9.4
Bluegill 19 6.7 8.1
Bavaria (Carver) Northern Pike 8 25.4 34.2
7/8-11 Black Crappie 11 8.2 9.8
Bluegill 81 6.4 8.4
Weaver (Hennepin) Northern Pike 16 22.2 33.9
7/15-19 Black Crappie 3 6.2 9.8
Bluegill 67 6.5 8.6
Yellow Bullhead 17 10.2 15.8
Lake (County)
Date
Fish Species No. per net Average Length (in) Max. Length (in)
Hydes (Carver) Northern Pike 17 22.4 32.7
7/22-24 Black Crappie 15 6.0 9.5
Bluegill 36 5.5 8.9
Yellow Bullhead 32 9.6 15.8
O'Dowd (Scott) Northern Pike 4 24.6 37.0
7/29-8/1 Walleye 8 16.8 25.8
Bluegill 35 6.1 8.4
Thole (Scott) Northern Pike 7 21.8 30.5
8/5-7 Black Crappie 13 5.9 10.6
Bluegill 23 6.6 8.5
Sarah (Hennepin) Northern Pike 13 24.1 36.1
7/15-17; 9/23-25 Walleye 1 17.9 22.8
also White Crappie--10-in avg size Black Crappie 14 7.3 11.1
Bluegill 24 6.3 8.5
Lake (County)
Date
Fish Species No. per net Average Length (in) Max. Length (in)
Long (Hennepin) Northern Pike 4 27.6 35.4
7/8-10/9 Walleye 3 14.6 21.6
Black Crappie 17 6.5 9.4
Bluegill 45 6.2 8.0
Independence (Hennepin) Northern Pike 2 25.4 35.5
7/8-10/9 Walleye 8 16.6 29.0
Black Crappie 75 7.8 11.7
Bluegill 66 6.1 8.3
Muskellunge 0.1 35.8 50.0
Pierson/Pierson's (Carver) Northern Pike 7 21.1 32.3
8/5-10/9 Hybrid Muskellunge 0.2 38.8 38.8
Bluegill 20 5.2 8.0
Black Crappie 5 67.3 9.8

 

Electrofishing 2013

We sample using electrofishing--  running electricity through the water with a specialized boat, typically at night-- from late spring to early fall for two types of studies:  1) largemouth bass are best sampled using this method, as they are under-sampled in lake survey nets. 2) in autumn, we check some walleye-stocked waters to measure success of fish stocked earlier in the year.  In electrofishing, fish are temporarily stunned and brought into the boat for counting and measuring, then returned live.

Lake (County) Date Species Number per hour Average length (in) Max length (in)
O'Dowd (Scott)
  6/3
LMB 98 11.0 19.9
Bush (Hennepin)
  6/6
LMB 57 11.6 18.8
Bavaria (Carver)
  6/5
LMB 72 10.6 21.1
Sarah (Hennepin)
  9/25
LMB 43 11.1 16.9

 

Spring Sampling 2013

Within two weeks after ice-out, we checked Lake Waconia walleye to see size and age composition of larger adult fish.  In 30 net sets, 105 walleyes were caught, as well as 4 pure-strain muskellunge. Summary results are:

Lake
(County)
Date
Fish Species No. per net Average Length (in) Max. Length (in)
Waconia
(Carver)
Walleye 3.5 22.4 29.5
5/1-4 Muskellunge 0.1 32.0 42.1

 

2012 Other Surveys / Fish Sampling

2011 Other Surveys / Fish Sampling

2010 (only Cedar Lake [Scott Co.] Special Assessment)

2009 Other Surveys / Fish Sampling

2008 Other Surveys / Fish Sampling

2007 Other Surveys / Fish Sampling

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