Clean Lakes Program: Otter - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Otter

 

Steuben County

1989

         
Sample Location: Deep Hole
Sample Date: 1989-07-18
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
1989
9.4
0.8
11
7.5
123
8.5
7.4
400
430
218.7
353.4
0.01
0.113
0.032
0.15
0.997
0.56
0.286
3.234
1.839
4.38
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
24.1
21
16.2
13.1
11.5
10.5
9.9
DO (mg/L)
12.3
8
1.9
0.2
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 50
 
Blue-Green Dominance (% of NU): 96
 
          Carlson TSI: 59
                    Indiana TSI: 54
                                                                           
Blue-Greens (#/L): 118510   Greens (#/L): 27   Diatoms (#/L): 4648   Other Algae (#/L): 109   Rotifers (#/L): 60   Zooplankton (#/L): 0
 
 

1992

         
Sample Location: Deep Hole
Sample Date: 1992-07-14
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
9.4
1.4
37
19
115.2
7.1
6.9
465
420
169
222
0.01
0.011
0.028
0.063
0.724
0.43
0.041
0.355
0.939
1.197
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)
24.2
24.2
21
21
22.5
21.2
18
15
11.5
10
DO (mg/L)
9.9
9.7
9.7
9.6
8.5
6.4
1
0.4
0
0
                                                                           
% Water Column Oxic: 70.6
 
Blue-Green Dominance (% of NU): 26
 
          Carlson TSI: 54
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 456   Greens (#/L): 65   Diatoms (#/L): 33   Other Algae (#/L): 228   Rotifers (#/L): 942   Zooplankton (#/L): 0
 
 

1997

         
Sample Location: Deep Hole
Sample Date: 1997-08-19
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
8.84
1
31
13
135.2
8.62
7.31
427
445
187.4
287.1
0.01
0.01
0.015
0.06
25.46
0.16
0.022
0.018
3.725
0.23
4.5
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
23.2
23
22.9
22.7
22.3
20.9
16.8
14.4
14
DO (mg/L)
13.1
13.05
11.6
9.36
6.29
9
1.05
0
0
0
                                                                           
% Water Column Oxic: 66.7
 
Blue-Green Dominance (% of NU): 77
 
          Carlson TSI: 55
                    Indiana TSI: 31
                                                                           
Blue-Greens (#/L): 15237   Greens (#/L): 451   Diatoms (#/L): 2149   Other Algae (#/L): 1733   Rotifers (#/L): 87   Zooplankton (#/L): 26
 
 

2002

         
Sample Location: Deep Hole
Sample Date: 2002-07-30
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
2002
9.4
8.8
23
11
119.6
8.2
7.7
465
410
179
241
0.014
0.012
0.022
0.056
3.79
0.552
0.015
0.018
1.162
0.885
2.248
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)
26.1
26.1
26.1
26.1
25.4
20.3
15.1
11.9
10.6
9.5
DO (mg/L)
9.7
9.7
9.7
9.7
9.9
8.1
0.9
0.4
0.4
0.3
                                                                           
% Water Column Oxic: 45.3
 
Blue-Green Dominance (% of NU): 82
 
          Carlson TSI: 41
                    Indiana TSI: 29
                                                                           
Blue-Greens (#/L): 31931   Greens (#/L): 0   Diatoms (#/L): 146   Other Algae (#/L): 6626   Rotifers (#/L): 328   Zooplankton (#/L): 65.2
 
 

2009

         
Sample Location: Deep Hole
Sample Date: 2009-07-06
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
9.14
1.8
19.79
14.5
105.8
8.3
7.5
440
350
193
218
0.01
0.018
0.015
0.075
5.99
0.583
0.054
0.018
2.081
0.59
2.903
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)
23.6
24.6
24.4
23.6
21.8
17.8
14.6
11.4
10
9.3
DO (mg/L)
9.6
8.8
8.8
9.1
8.4
1.2
0.6
0.03
0
0
                                                                           
% Water Column Oxic: 32.82
 
Blue-Green Dominance (% of NU): 29.7
 
          Carlson TSI: 48
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 1761   Greens (#/L): 640   Diatoms (#/L): 107   Other Algae (#/L): 3202   Rotifers (#/L): 160   Zooplankton (#/L): 55.2
 
 

2011

         
Sample Location: Deep Hole
Sample Date: 2011-08-01
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
2011
8.5
1.4
22.6
14.76
137
8.3
7.6
448
390
180.5
242
0.01
0.01
0.014
0.059
5.87
0.5471395
0.046339
0.018
1.233569
0.6738415
2.109377
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
29.4
28.4
26.7
21.1
17.8
14.5
12.5
11.4
DO (mg/L)
10.3
10.4
10.5
10.3
9.1
1.6
0.6
0.5
0
0
                                                                           
% Water Column Oxic: 47.1
 
Blue-Green Dominance (% of NU): 96
 
Blue-Green Dominance (% of cells): 84.3
          Carlson TSI: 48
                   
                                                                           
Blue-Greens (#/L): 2854811   Greens (#/L): 496882   Diatoms (#/L): 9034   Other Algae (#/L): 27103   Rotifers (#/L): 56   Zooplankton (#/L): 92.3
Blue-Greens (cells/L): 104228   Greens (cells/L): 4311   Diatoms (cells/L): 9   Other Algae (cells/L): 27   Rotifers (cells/L):   Zooplankton (cells/L):
 
 

2015

         
Sample Location: Deep hole
Sample Date: 2015-06-30
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
2015
9.5
2
16.55
16.4
8.3
7.5
412.5
466.4
185
232
0.01
0.01
0.032
0.114
6.8
0.303
0.013
0.018
0.821
0.694
2.0925
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)
22
22
22
21.9
21.3
18.8
14.5
11.1
10.2
DO (mg/L)
8.84
8.8
8.84
8.64
7.29
1.95
0.12
0.13
0.1
                                                                           
% Water Column Oxic: 52.63
 
Blue-Green Dominance (% of NU):
 
Blue-Green Dominance (% of cells):
          Carlson TSI: 55
                   
                                                                           
Blue-Greens (#/L):   Greens (#/L):   Diatoms (#/L):   Other Algae (#/L):   Rotifers (#/L):   Zooplankton (#/L):
Blue-Greens (cells/L):   Greens (cells/L):   Diatoms (cells/L):   Other Algae (cells/L):   Rotifers (cells/L):   Zooplankton (cells/L):
 
 

 

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)