Clean Lakes Program: Silver - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Silver

 

Steuben County

1989

         
Sample Location: Deep Hole
Sample Date: 1989-07-17
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
11.6
3.2
78
20.5
107
8.3
7.1
410
375
214.4
280
0.01
0.01
0.026
0.055
0.405
0.44
0.029
1.156
1.654
2.696
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)
26.5
25.3
24.5
22
17.5
15.2
13.5
11.9
10.8
10
9.5
DO (mg/L)
8.7
8.6
7.8
5.1
1.4
0.8
0.2
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 63.6
 
Blue-Green Dominance (% of NU): 9
 
          Carlson TSI: 47
                    Indiana TSI: 13
                                                                           
Blue-Greens (#/L): 999   Greens (#/L): 5391   Diatoms (#/L): 299   Other Algae (#/L): 2196   Rotifers (#/L): 1975   Zooplankton (#/L): 0
 
 

1992

         
Sample Location: Deep Hole
Sample Date: 1992-08-04
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
11.6
3.2
60
22
102.6
8.6
7.7
410
375
214.4
280
0.014
0.01
0.041
0.061
0.305
0.313
0.03
0.693
0.599
0.543
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)
22.9
22.8
22.8
22.8
22.8
22.8
22.5
18.9
16
13.8
11.5
10.5
9.8
DO (mg/L)
8.5
8.6
8.6
8.7
8.7
8.7
8.6
0.6
0.6
0.1
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 60.3
 
Blue-Green Dominance (% of NU): 56
 
          Carlson TSI: 51
                    Indiana TSI: 20
                                                                           
Blue-Greens (#/L): 2523   Greens (#/L): 561   Diatoms (#/L): 84   Other Algae (#/L): 392   Rotifers (#/L): 952   Zooplankton (#/L): 0
 
 

1997

         
Sample Location: Deep Hole
Sample Date: 1997-08-05
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
11.6
2.7
42
22.5
103.8
8.5
7.69
370
368
143
206.9
0.01
0.01
0.05
0.078
2.19
0.029
0.029
0.018
0.738
0.581
1.442
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)
25.7
25.7
25.4
25.5
25.2
24.9
23.2
20.5
18
15.5
13
12.2
11.2
DO (mg/L)
8.35
8.41
8.5
8.55
8.55
7.4
4.2
0.3
1.65
0.4
0.15
0.15
0.15
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 37
 
          Carlson TSI: 48
                    Indiana TSI: 9
                                                                           
Blue-Greens (#/L): 611   Greens (#/L): 42   Diatoms (#/L): 522   Other Algae (#/L): 368   Rotifers (#/L): 89   Zooplankton (#/L): 6.3
 
 

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
11.6
3.8
42
24
100.7
8.3
7.7
402
374
124
175
0.011
0.013
0.01
0.038
1.57
0.013
0.013
0.018
0.018
0.509
0.745
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
26.7
26.5
26.8
26.4
25.8
21.5
18.1
16.3
14.6
13.3
12.2
DO (mg/L)
8.1
8.1
8.1
8.1
7.8
7.4
9.8
3.9
0.7
0.7
0.5
0.3
                                                                           
% Water Column Oxic: 56.2
 
Blue-Green Dominance (% of NU): 68
 
          Carlson TSI: 38
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 797   Greens (#/L): 35   Diatoms (#/L): 17   Other Algae (#/L): 260   Rotifers (#/L): 61   Zooplankton (#/L): 6.5
 
 

2006

         
Sample Location: Site 1
Sample Date: 2006-07-24
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
9
11
14
13.4
102.1
8.5
7.6
395.6
362.5
127
176
0.01
0.01
0.028
0.046
2.67
0.016
0.014
0.018
0.15
0.578
0.838
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
26.3
26.3
26.1
25.3
22.3
18.4
16.4
14.5
13.2
11.3
10.3
DO (mg/L)
8.4
8.2
8.2
8.7
7.9
6.6
5.3
1.6
0.5
0
0
0
0
                                                                           
% Water Column Oxic: 54.5
 
Blue-Green Dominance (% of NU): 19.9
 
          Carlson TSI: 39
                    Indiana TSI: 10
                                                                           
Blue-Greens (#/L): 1109   Greens (#/L): 328   Diatoms (#/L): 504   Other Algae (#/L): 3478   Rotifers (#/L): 126   Zooplankton (#/L): 25.3
 
 

2006

         
Sample Location: Site 2
Sample Date: 2006-07-24
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
5.5
2.9
22
13.1
115.2
8.5
7.6
397.7
398.9
125
174
0.01
0.01
0.026
0.038
1.67
0.015
0.015
0.018
0.018
0.634
0.786
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)
26.6
26.6
26.6
26.6
26.1
25.5
20.9
DO (mg/L)
9.4
9.1
9.2
9.2
7.9
5.6
0.1
                                                                           
% Water Column Oxic: 80
 
Blue-Green Dominance (% of NU): 20.7
 
          Carlson TSI: 44
                    Indiana TSI: 9
                                                                           
Blue-Greens (#/L): 718   Greens (#/L): 53   Diatoms (#/L): 452   Other Algae (#/L): 2100   Rotifers (#/L): 133   Zooplankton (#/L): 13.1
 
 

2006

         
Sample Location: Site 3
Sample Date: 2006-07-24
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
9
3.1
21
21.5
108.9
8.5
8.1
398.3
383.6
125
130
0.01
0.01
0.021
0.024
1.69
0.014
0.015
0.018
0.018
0.551
0.673
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)
26.5
26.4
26.4
26.4
26.4
26
22.4
18.5
16.1
13.6
DO (mg/L)
8.4
8.7
8.7
8.7
8.7
8.7
4.5
1
0.5
0
                                                                           
% Water Column Oxic: 75
 
Blue-Green Dominance (% of NU): 27.7
 
          Carlson TSI: 43
                    Indiana TSI: 7
                                                                           
Blue-Greens (#/L): 1174   Greens (#/L): 0   Diatoms (#/L): 352   Other Algae (#/L): 2377   Rotifers (#/L): 293   Zooplankton (#/L): 42.3
 
 

 

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)