|
Total Nitrogen (Summer
average, June - August) |
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|
West
Okoboji Lake |
East Okoboji Lake |
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|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
1990 Bachmann |
5/27 to 7/29 |
3 |
9 |
0.80 |
0.04 |
1990 Bachmann |
5/27 to 7/29 |
3 |
9 |
2.00 |
0.23 |
|
1993 Lang |
6/5 to 8/20 |
3 |
18 |
0.89 |
0.03 |
99 |
99 |
99 |
99 |
99 |
99 |
|
1994 Lang |
6/26 to 8/30 |
3 |
18 |
0.74 |
0.02 |
99 |
99 |
99 |
99 |
99 |
99 |
|
1995 Lang |
6/4 to 8/6 |
3 |
15 |
0.75 |
0.02 |
99 |
99 |
99 |
99 |
99 |
99 |
|
1996 Lang |
6/14 to 8/5 |
3 |
12 |
0.56 |
0.01 |
99 |
99 |
99 |
99 |
99 |
99 |
|
1997 Lang |
6/21 to 8/3 |
3 |
12 |
0.75 |
0.03 |
99 |
99 |
99 |
99 |
99 |
99 |
|
1999 CLAMP |
6/17 to 8/25 |
6 |
36 |
1.26 |
0.08 |
1999 CLAMP |
6/17 to 8/31 |
5 |
30 |
2.53 |
0.17 |
|
2000 CLAMP |
6/7 to 8/31 |
6 |
42 |
1.03 |
0.08 |
2000 CLAMP |
6/2 to 8/20 |
5 |
35 |
2.61 |
0.17 |
|
2001 CLAMP |
6/14 to 8/22 |
6 |
36 |
0.73 |
0.03 |
2001 CLAMP |
6/10 to 8/22 |
5 |
25 |
1.55 |
0.06 |
|
2002 CLAMP |
6/5 to 8/23 |
6 |
42 |
0.81 |
0.03 |
2002 CLAMP |
6/5 to 8/28 |
5 |
35 |
1.40 |
0.06 |
|
2003 CLAMP |
6/11 to 8/20 |
6 |
36 |
0.95 |
0.03 |
2003 CLAMP |
6/8 to 8/21 |
5 |
30 |
2.01 |
0.11 |
|
|
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|
Big Spirit Lake |
Upper Gar Lake |
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|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
1990 Bachmann |
5/26 to 7/28 |
3 |
9 |
1.30 |
0.13 |
1990 Bachmann |
5/27 to 7/29 |
3 |
9 |
2.80 |
0.24 |
|
1999 CLAMP |
6/18 to 8/20 |
5 |
25 |
1.57 |
0.11 |
1999 CLAMP |
6/17 to 8/25 |
1 |
5 |
2.54 |
0.44 |
|
2000 CLAMP |
6/7 to 8/31 |
5 |
35 |
1.25 |
0.07 |
2000 CLAMP |
6/2 to 8/25 |
1 |
7 |
2.15 |
0.07 |
|
2001 CLAMP |
6/8 to 8/20 |
5 |
30 |
0.93 |
0.05 |
2001 CLAMP |
6/8 to 8/22 |
1 |
6 |
1.56 |
0.14 |
|
2002 CLAMP |
6/7 to 8/28 |
5 |
35 |
0.96 |
0.04 |
2002 CLAMP |
6/5 to 8/28 |
1 |
7 |
1.23 |
0.08 |
|
2003 CLAMP |
6/5 to 8/19 |
5 |
29 |
1.57 |
0.08 |
2003 CLAMP |
6/12 to 8/30 |
1 |
6 |
1.80 |
0.19 |
|
|
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|
Lake Minnewashta
|
Lower Gar Lake |
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|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
1990 Bachmann |
5/27 to 7/29 |
3 |
9 |
2.40 |
0.23 |
1990 Bachmann |
5/27 to 7/29 |
3 |
9 |
3.00 |
0.23 |
|
1999 CLAMP |
7/14 to 8/25 |
1 |
4 |
1.99 |
0.20 |
1999 CLAMP |
7/14 to 8/25 |
1 |
4 |
3.28 |
0.65 |
|
2000 CLAMP |
6/2 to 8/25 |
1 |
7 |
2.55 |
0.18 |
2000 CLAMP |
6/2 to 8/25 |
1 |
7 |
2.82 |
0.33 |
|
2001 CLAMP |
6/8 to 8/22 |
1 |
6 |
1.59 |
0.06 |
2001 CLAMP |
6/8 to 8/22 |
1 |
6 |
1.82 |
0.09 |
|
2002 CLAMP |
6/5 to 8/28 |
1 |
7 |
1.55 |
0.17 |
2002 CLAMP |
6/5 to 8/28 |
1 |
7 |
1.87 |
0.18 |
|
2003 CLAMP |
6/12 to 8/30 |
1 |
6 |
2.10 |
0.09 |
2003 CLAMP |
6/12 to 8/30 |
1 |
6 |
2.75 |
0.44 |
|
|
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|
Little Spirit Lake |
Center Lake |
||||||||||
|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
1990 Bachmann |
May to August |
3 |
9 |
3.3 |
0.19 |
1990 Bachmann |
5/26 to 7/28 |
3 |
9 |
3.30 |
0.40 |
|
NANA |
NNAA |
NNAA |
NNAA |
NNA |
NA |
1999 CLAMP |
7/18 to 8/29 |
2 |
7 |
3.34 |
0.60 |
|
2000 CLAMP |
6/24 to 8/19 |
2 |
10 |
3.47 |
0.34 |
2000 CLAMP |
6/11 to 8/13 |
2 |
6 |
3.53 |
0.68 |
|
2001 CLAMP |
6/9 to 8/11 |
2 |
10 |
3.17 |
0.27 |
2001 CLAMP |
7/8 to 8/25 |
2 |
8 |
3.34 |
0.31 |
|
2002 CLAMP |
6/5 to 8/23 |
2 |
14 |
4.99 |
0.59 |
2002 CLAMP |
6/9to 8/19 |
2 |
12 |
2.86 |
0.31 |
|
2003 CLAMP |
6/11 to 8/18 |
2 |
12 |
4.61 |
0.47 |
2003 CLAMP |
6/15to 8/31 |
2 |
12 |
2.87 |
0.16 |
|
|
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|
Silver Lake |
|
||||||||||
|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
|
|
|
|
|
|
1990 Bachmann |
5/26 to 7/28 |
3 |
9 |
2.40 |
0.13 |
|
|
|
|
|
|
|
1999 CLAMP |
7/30 to 8/26 |
4 |
12 |
2.23 |
0.13 |
|
|
|
|
|
|
|
2000 CLAMP |
6/6 to 8/22 |
4 |
23 |
3.52 |
0.29 |
|
|
|
|
|
|
|
2001 CLAMP |
6/5 to 8/28 |
4 |
28 |
5.48 |
0.41 |
|
|
|
|
|
|
|
2002 CLAMP |
6/11 to 8/20 |
4 |
24 |
2.33 |
0.20 |
|
|
|
|
|
|
|
2003 CLAMP |
6/10 to 8/19 |
4 |
24 |
3.11 |
0.17 |
|
|
|
|
|
|
|
|
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|
Elk Lake |
Trumbull Lake |
||||||||||
|
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
Year Principal Investigator |
Sampling Period |
Number of lake sampling sites |
Total number of samples collected |
Avg Total N (mg/L) |
SE |
|
NA |
NA |
NA |
NA |
NA |
NA |
1990 Bachmann |
May to Aug |
3 |
9 |
3.30 |
0.12 |
|
2000 CLAMP |
6/20 to 8/16 |
1 |
3 |
5.80 |
0.30 |
2000 CLAMP |
6/20 to 8/16 |
1 |
3 |
5.37 |
0.31 |
|
2001 CLAMP |
6/13 to 8/16 |
1 |
3 |
4.93 |
0.53 |
2001 CLAMP |
6/13 to 8/16 |
1 |
3 |
6.11 |
1.56 |
|
2002 CLAMP |
7/22 to 8/26 |
1 |
2 |
6.28 |
0.26 |
2002 CLAMP |
7/223 to 8/26 |
1 |
2 |
3.47 |
0.5 |