Clean Lakes Program: Little Otter - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Little Otter

 

Steuben County

1990

         
Sample Location: Deep Hole
Sample Date: 1990-07-10
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1990
11.3
2.1
33
12
112
8.4
7.3
700
420
255.3
280.6
0.01
0.659
3.734
0.451
0.573
0.7
0.046
3.729
1.14
0.937
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
25
23
20.5
17
13.5
9
7
6.5
6
6
DO (mg/L)
9.8
9.5
10.8
1.7
0.3
0.2
0.2
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 50
 
Blue-Green Dominance (% of NU): 99
 
          Carlson TSI: 86
                    Indiana TSI: 58
                                                                           
Blue-Greens (#/L): 1023819   Greens (#/L): 1380   Diatoms (#/L): 8738   Other Algae (#/L): 3220   Rotifers (#/L): 487   Zooplankton (#/L): 0
 
 

1992

         
Sample Location: Deep Hole
Sample Date: 1992-07-20
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1992
11.3
2
30
16
106
8.1
7.9
600
610
231
208
0.01
0.274
0.039
0.165
1.096
1.16
0.03
3.883
1.031
1.112
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
24
23.9
23.5
23.5
22
18
14.1
11
9
7.1
7
6.5
DO (mg/L)
8.9
8.8
8.8
8.8
6.9
3.1
0.7
0.4
0.1
0.1
0
0
                                                                           
% Water Column Oxic: 56.6
 
Blue-Green Dominance (% of NU): 14
 
          Carlson TSI: 54
                    Indiana TSI: 25
                                                                           
Blue-Greens (#/L): 2474   Greens (#/L): 6790   Diatoms (#/L): 1500   Other Algae (#/L): 7027   Rotifers (#/L): 378   Zooplankton (#/L): 0
 
 

1997

         
Sample Location: Deep Hole
Sample Date: 1997-07-29
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
1997
11.3
3
57
18.5
116.9
8.39
7.59
700
442
233
280.9
0.01
0.737
0.015
0.8
3.45
0.079
0.036
0.018
2.293
0.6
3.3
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
26.8
26
25.9
25.6
23.9
20.7
17
13
11
10
9
8.8
DO (mg/L)
9.6
9.5
9.5
9.3
10.2
12.4
1
0.1
0
0
0
0
                                                                           
% Water Column Oxic: 54.5
 
Blue-Green Dominance (% of NU): 66
 
          Carlson TSI: 43
                    Indiana TSI: 34
                                                                           
Blue-Greens (#/L): 32284   Greens (#/L): 681   Diatoms (#/L): 851   Other Algae (#/L): 14780   Rotifers (#/L): 238   Zooplankton (#/L): 20.7
 
 

2002

         
Sample Location: Deep Hole
Sample Date: 2002-07-01
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
2002
11.3
7.1
28
16
101.3
8.25
7.8
720
460
239.5
250
0.01
0.27
0.033
0.379
0.259
0.012
0.054
1.526
0.594
1.907
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
29.5
29.4
27.4
26.1
23
17.6
14
11.4
9.9
8.9
8.1
7.6
DO (mg/L)
8.12
8.13
8.02
7.29
8.67
5.1
3.16
2.52
0.35
0.32
0.28
0.25
                                                                           
% Water Column Oxic: 56.2
 
Blue-Green Dominance (% of NU): 87
 
          Carlson TSI: 44
                    Indiana TSI: 29
                                                                           
Blue-Greens (#/L): 15782   Greens (#/L): 159   Diatoms (#/L): 206   Other Algae (#/L): 1932   Rotifers (#/L): 75   Zooplankton (#/L): 29.4
 
 

2009

         
Sample Location: Deep Hole
Sample Date: 2009-06-30
Year
Max Depth
(m)
Secchi
(m)
Light 3'
(%)
1% Light Level
(ft)
DO @5'
(%)
pH
Epi
pH
Hypo
Cond
Epi
Cond
Hypo
Alk
Epi
Alk
Hypo
SRP
Epi
SRP
Hypo
TP
Epi
TP
Hypo
Chl-a
(ug/L)
NO3
Epi
NO3
Hypo
NH3
Epi
NH3
Hypo
TKN
Epi
TKN
Hypo
2009
10
2.7
8.63
13.3
75.9
8.1
7.5
566
351.8
234
203
0.01
0.01
0.029
0.031
5.81
0.583
0.723
0.059
0.208
0.675
0.84
Depth (m)
 0 
 1 
1.5
 2 
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Temp (oC)
23.1
23.1
23.1
23.1
22.8
18.4
13.6
10.2
8.8
7.8
7.5
DO (mg/L)
6.1
6.4
6.4
6.4
5.4
4.3
2.1
2.1
0.16
0.02
0.02
                                                                           
% Water Column Oxic: 60
 
Blue-Green Dominance (% of NU): 10.3
 
          Carlson TSI: 49
                    Indiana TSI: 21
                                                                           
Blue-Greens (#/L): 9141   Greens (#/L): 52059   Diatoms (#/L): 11610   Other Algae (#/L): 15943   Rotifers (#/L): 26   Zooplankton (#/L): 29.9
 
 

 

In 2011 CLP changed plankton sampling methods, thus the Indiana TSI is no longer calculated.
Epi
Epilimnion
Alk
Alkalinity (mg CaCO3/L)
DO
Dissolved Oxygen (mg/L)
NH3
Ammonia (mg-N/L)
SRP
Soluable Reactive Phosphorus (mg-P/L)
Hypo
Hypolimnion
Chl-a
Chlorophyll-a (ug/L)
Light 3'
Percent light penetration at 3ft
NO3
Nitrate (mg-N/L)
TP
Total Phosphorus (mg-P/L)
   
Cond
Conductivity
1% Light Level
Depth of the 1% light level (ft)
TKN
Total Kjeldahl Nitrogen (mg-N/L)
Temp
Temperature (oC)