Clean Lakes Program: George - Steuben County

 

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Indiana Clean Lakes Program Lake Report

George

  

Steuben County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-07-11
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
24.4
2.2
47
22
102
8.4
6.9
390
310
161
192
0.01
0.046
0.086
0.107
0.411
0.467
0.018
0.493
1.062
1.298
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)
28
28
28
25
20
17
13
11
10.5
9.5
8.5
8
7
7
7
7
7
7
7
6.5
6.5
6.5
6.5
6.5
DO (mg/L)
8
8
8.1
10.1
6.2
4.1
4.1
4
4.2
4.9
4.5
3.9
3.9
3.2
2.9
2.7
1.9
1.9
1.6
1.4
1.4
0.9
0.3
0.2
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 35
  
          Carlson TSI: 59
                    Indiana TSI: 12
                                                                           
Blue-Greens (#/L): 1196   Greens (#/L): 262   Diatoms (#/L): 168   Other Algae (#/L): 1761   Rotifers (#/L): 29   Zooplankton (#/L): 0
 
 

1992

          
Sample Location: Deep Hole
Sample Date: 1992-08-03
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
24.4
2.8
50
24
99.24
8
7.2
371
370
140
159.5
0.01
0.015
0.034
0.032
0.42
0.628
0.038
0.323
0.64
0.256
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)
22.6
22.6
22.5
22.5
21.9
21.8
21.7
21.5
19
14.8
11.9
10.4
8.8
9
7.8
7
6.6
6.4
6.3
6.2
6.1
6.1
6.1
6
6
DO (mg/L)
8.4
8.4
8.4
8.5
8.4
8.3
8.2
7.9
4.5
2
2.9
3.1
4
3.9
3.7
2.5
1.8
1.8
0.8
0.7
0.5
0.3
0.2
0.1
0.1
                                                                           
% Water Column Oxic: 88.2
  
Blue-Green Dominance (% of NU): 32
  
          Carlson TSI: 50
                    Indiana TSI: 10
                                                                           
Blue-Greens (#/L): 2485   Greens (#/L): 189   Diatoms (#/L): 1810   Other Algae (#/L): 2890   Rotifers (#/L): 369   Zooplankton (#/L): 0
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-07-28
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
24.4
4
43
29
103.8
8.32
7.31
368
320
133.6
164.2
0.01
0.022
0.023
0.037
2.03
0.034
0.029
0.018
0.722
0.613
1.141
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)
28.2
28.1
28.1
28.1
28.1
27
24.1
20.3
16.9
15.1
12.9
11.5
11.1
10.2
9.8
9.3
9
8.9
8.8
8.6
8.4
8.3
8.2
8.2
8.1
8.1
DO (mg/L)
8.1
8.1
8.1
8.2
8.1
8.1
7
6.7
4.5
4
2.7
2.4
2
0.9
0
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 56.5
  
Blue-Green Dominance (% of NU): 17
  
          Carlson TSI: 42
                    Indiana TSI: 8
                                                                           
Blue-Greens (#/L): 188   Greens (#/L): 110   Diatoms (#/L): 194   Other Algae (#/L): 590   Rotifers (#/L): 39   Zooplankton (#/L): 5.3
 
 

2002

          
Sample Location: Deep Hole
Sample Date: 2002-07-08
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
24.4
2.5
55
32
105.3
8.4
7.7
440
365
158
166
0.012
0.01
0.042
0.053
0.47
0.013
0.101
0.09
0.391
0.782
0.78
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)
28.4
28.3
28.3
27.9
27.3
26.3
22.4
18.8
16.2
14.3
13.2
12
10.7
9.5
7.8
7.5
7.2
7
6.9
6.7
6.7
DO (mg/L)
8.2
8.2
8.2
8.3
7.8
7.2
6.7
7.6
7.9
7.7
6.8
6.7
6.3
6.1
5.6
5.2
5
4.7
3.6
1.1
0.4
                                                                           
% Water Column Oxic: 92.3
  
Blue-Green Dominance (% of NU): 61
  
          Carlson TSI: 43
                    Indiana TSI: 16
                                                                           
Blue-Greens (#/L): 1867   Greens (#/L): 379   Diatoms (#/L): 324   Other Algae (#/L): 366   Rotifers (#/L): 144   Zooplankton (#/L): 8.6
 
 

2006

          
Sample Location: Site 1
Sample Date: 2006-06-26
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
2006
24.4
3.8
32
27
106
8.6
7.8
388
269
151
163
0.01
0.01
0.024
0.013
1.41
0.013
0.101
0.022
0.195
0.844
0.894
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
25.2
25.2
25.2
24.9
24.8
24.5
21.4
16.5
15.1
12.9
11.3
10.1
8.9
8.4
8.1
7.9
7.8
7.8
7.7
7.6
7.6
7.5
7.5
7.4
7.4
DO (mg/L)
8.5
8.8
8.7
8.7
8.9
8.9
8.3
8
7.7
6.6
6.9
7.5
7.7
7.6
6.7
6.5
6
5.8
5.5
5.1
4.8
4.1
3.7
3.3
2.4
1.4
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 79.3
  
          Carlson TSI: 42
                    Indiana TSI: 15
                                                                           
Blue-Greens (#/L): 653   Greens (#/L): 0   Diatoms (#/L): 65   Other Algae (#/L): 84   Rotifers (#/L): 19   Zooplankton (#/L): 2.5
 
 

2006

          
Sample Location: Site 2
Sample Date: 2006-06-26
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
2006
18.2
3
34
27.5
103
8.5
7.8
395
270
150
162
0.01
0.01
0.04
0.017
0.07
0.146
0.013
0.142
0.018
0.903
0.842
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)
26.3
26.3
25.8
25.1
24.8
24.4
21
18.5
17.1
15.5
13.1
10.1
9
8.4
8.1
7.9
7.9
7.7
7.6
7.6
DO (mg/L)
8.4
8.3
84
8.5
8.7
8.1
8.2
8.3
8.1
7.1
6.8
7.4
7.5
6.8
6.4
6
5.8
8.2
4.2
2.8
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 72.9
  
          Carlson TSI: 35
                    Indiana TSI: 15
                                                                           
Blue-Greens (#/L): 848   Greens (#/L): 13   Diatoms (#/L): 121   Other Algae (#/L): 161   Rotifers (#/L): 13   Zooplankton (#/L): 5.3
 
 

2006

          
Sample Location: Site 3
Sample Date: 2006-06-26
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
2006
7.9
2.2
29
21
106
8.5
7.9
386
338
143
165
0.01
0.01
0.03
0.037
0
0.013
0.013
0.018
0.027
0.882
0.988
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)
27
26.7
25.9
25.6
25
23.7
20.6
16.7
15.6
DO (mg/L)
8.6
8.6
8.6
8.5
8.5
9.8
11.7
1.3
0.1
                                                                           
% Water Column Oxic: 86
  
Blue-Green Dominance (% of NU): 40.8
  
          Carlson TSI: 51
                    Indiana TSI: 9
                                                                           
Blue-Greens (#/L): 1368   Greens (#/L): 57   Diatoms (#/L): 126   Other Algae (#/L): 1541   Rotifers (#/L): 230   Zooplankton (#/L): 28.3
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-07-02
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
2012
21.64
4.6
60.4
7.9
7.6
400.7
243.1
158
162
0.01
0.01
0.012
0.018
1.33
0.013
0.111
0.042
0.022
1.1
0.943
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)
29.4
29.1
28.6
28.5
27.9
27.3
26.9
23.8
21.6
17.6
14.5
14.2
12.7
10.4
9.2
8.4
8
7.3
7.3
7.1
7
6.9
DO (mg/L)
4.7
4.08
4.73
4.74
4.81
4.84
4.71
5.1
5.69
6.18
6.33
6.23
5.66
5.32
5.17
4.9
4.66
4.07
3.98
3.63
2.98
2.8
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 88.2
  
Blue-Green Dominance (% of cells): 50.7
           Carlson TSI: 38
                   
                                                                           
Blue-Greens (#/L): 46068   Greens (#/L): 20697   Diatoms (#/L): 22700   Other Algae (#/L): 1335   Rotifers (#/L): 3   Zooplankton (#/L): 3
Blue-Greens (cells/L): 533   Greens (cells/L): 48   Diatoms (cells/L): 22   Other Algae (cells/L): 1   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2014

          
Sample Location: Deep Hole
Sample Date: 2014-06-23
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
2014
22.6
3.2
28.7
13
8.5
7.5
372
420
143
165
0.01
0.013
0.022
0.06
2.07
0.018
0.287
0.151
0.114
0.641
0.489
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)
25.1
25.1
25.1
25.1
25
23
18
15
13.1
11.8
10.8
9.9
8.8
7.7
7.4
7
6.8
6.4
6.2
6.2
6.1
6.1
DO (mg/L)
8.7
8.5
8.4
8.6
8.6
6.9
4
4.6
5.5
5.4
5.6
5.5
4.9
4.7
4.8
4
3.8
3.6
3.1
2.7
2.4
2.3
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 94.7
  
Blue-Green Dominance (% of cells): 37.4
           Carlson TSI: 46
                   
                                                                           
Blue-Greens (#/L): 523   Greens (#/L): 28   Diatoms (#/L): 39   Other Algae (#/L): 707   Rotifers (#/L): 64   Zooplankton (#/L): 36
Blue-Greens (cells/L): 18   Greens (cells/L): 0   Diatoms (cells/L): 0   Other Algae (cells/L): 1   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

 

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)