Clean Lakes Program: Sylvan - Noble County

 

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Indiana Clean Lakes Program Lake Report

Sylvan

  

Noble County

1991

          
Sample Location: Deep Hole
Sample Date: 1991-07-15
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
1991
11
0.8
17
12.5
93.7
8.3
7.3
460
460
154.8
195
0.01
0.263
0.131
0.29
0.512
0.507
0.018
1.091
1.3
1.965
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
26
25.5
25
22.5
17
14
13
11
DO (mg/L)
8.7
7.9
7.6
6.5
5.5
0.2
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 45
  
Blue-Green Dominance (% of NU): 62
  
          Carlson TSI: 69
                    Indiana TSI: 40
                                                                           
Blue-Greens (#/L): 15400   Greens (#/L): 5963   Diatoms (#/L): 2687   Other Algae (#/L): 721   Rotifers (#/L):   Zooplankton (#/L): 170
 
 

2000

          
Sample Location: Deep Hole
Sample Date: 2000-07-17
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
2000
9.1
0.5
5
4
120.1
8.53
7.5
621
543
160
178
0.01
0.174
0.086
0.265
28.91
0.022
0.022
0.178
0.927
1.582
1.555
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)
26.2
26.1
26
26
24.3
19.6
15.8
12.8
11.3
0
DO (mg/L)
10.19
10.03
9.61
9.52
8.98
1.65
0.28
0.29
0.29
0.29
                                                                           
% Water Column Oxic: 50
  
Blue-Green Dominance (% of NU): 80
  
          Carlson TSI: 67
                    Indiana TSI: 55
                                                                           
Blue-Greens (#/L): 148116   Greens (#/L): 12328   Diatoms (#/L): 20254   Other Algae (#/L): 4403   Rotifers (#/L): 881   Zooplankton (#/L): 92.2
 
 

2003

          
Sample Location: Deep Hole
Sample Date: 2003-07-21
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
2003
8.8
0.9
8
9
96
8.4
7.7
594
526
148
181
0.01
0.086
0.073
0.141
6.57
0.013
0.023
0.03
0.71
1.095
1.429
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
26
25.8
25.6
25.1
23.8
20.8
16.5
13.3
DO (mg/L)
7.8
7.8
7.8
7.8
5.3
0.2
0.1
0
0
                                                                           
% Water Column Oxic: 34
  
Blue-Green Dominance (% of NU): 26
  
          Carlson TSI: 59
                    Indiana TSI: 31
                                                                           
Blue-Greens (#/L): 19163   Greens (#/L): 3656   Diatoms (#/L): 1205   Other Algae (#/L): 48931   Rotifers (#/L): 964   Zooplankton (#/L): 21
 
 

2006

          
Sample Location: Site 1
Sample Date: 2006-08-07
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
9.1
0.5
2
4.9
100.2
8.5
7.4
537
504
148
207
0.01
0.248
0.083
0.32
37.81
0.013
0.013
0.018
1.945
1.554
2.996
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
27.7
27.6
26.8
24.3
20.4
16.7
14.6
13
DO (mg/L)
8.5
5.3
7.8
7.3
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 22
  
Blue-Green Dominance (% of NU): 72.9
  
          Carlson TSI: 68
                    Indiana TSI: 52
                                                                           
Blue-Greens (#/L): 77149   Greens (#/L): 25479   Diatoms (#/L): 1834   Other Algae (#/L): 815   Rotifers (#/L): 510   Zooplankton (#/L): 54.2
 
 

2006

          
Sample Location: Site 2
Sample Date: 2006-08-07
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
6.4
4
0.6
111.9
8.7
7.7
548
569
158
199
0.01
0.065
0.05
0.116
3.52
0.013
0.013
0.018
0.735
1.288
2.07
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)
27.9
27.9
27.9
27.8
25.9
24.4
20.6
DO (mg/L)
8.9
8.9
8.8
8.8
0.2
0
0
                                                                           
% Water Column Oxic: 31
  
Blue-Green Dominance (% of NU): 56.6
  
          Carlson TSI: 46
                    Indiana TSI: 29
                                                                           
Blue-Greens (#/L): 15827   Greens (#/L): 10397   Diatoms (#/L): 307   Other Algae (#/L): 973   Rotifers (#/L): 410   Zooplankton (#/L): 28
 
 

2006

          
Sample Location: Site 3
Sample Date: 2006-08-07
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
4.9
0.5
2
3.3
110.1
8.6
555
167
0.011
0.116
4.72
0.013
0.018
1.667
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)
27.9
27.9
27.9
27.8
27.1
24.2
DO (mg/L)
8.6
8.5
8.6
8.5
5.3
0.1
                                                                           
% Water Column Oxic: 60
  
Blue-Green Dominance (% of NU): 48.1
  
          Carlson TSI: 63
                    Indiana TSI: 23
                                                                           
Blue-Greens (#/L): 18554   Greens (#/L): 15000   Diatoms (#/L): 1620   Other Algae (#/L): 3188   Rotifers (#/L): 157   Zooplankton (#/L): 63.6
 
 

2010

          
Sample Location: Deep Hole
Sample Date: 2010-07-20
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
2010
9.1
0.7
7.4
8.5
90.7
8.3
7.3
481
429
177
238
0.01
0.062
0.045
0.089
13.77
0.013
0.013
0.018
2.207
1.326
3.008
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)
28.3
28.3
28.3
28.3
27.7
24.8
20.3
16.1
13.9
12.5
11.7
DO (mg/L)
7.7
7.6
7.7
7.3
2.2
0.1
0
0
0
0
0
                                                                           
% Water Column Oxic: 33
  
Blue-Green Dominance (% of NU): 95.5
  
Blue-Green Dominance (% of cells): 93.38
           Carlson TSI: 60
                    Indiana TSI: 59
                                                                           
Blue-Greens (#/L): 22931704   Greens (#/L): 878800   Diatoms (#/L): 331623   Other Algae (#/L): 414528   Rotifers (#/L): 0   Zooplankton (#/L): 5.2
Blue-Greens (cells/L): 337242   Greens (cells/L): 13567   Diatoms (cells/L): 1078   Other Algae (cells/L): 1063   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-08-14
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
2012
6.4
1.45
11
13
23.5
7.6
7.7
457
455
150
139
0.01
0.01
0.044
0.033
28.24
0.013
0.013
0.018
0.07
1.15
1.08
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)
24.6
23.9
23.79
23.75
23.68
23.6
23.51
23.48
DO (mg/L)
1.41
1.61
1.85
2.05
2.13
2.22
2.24
2.34
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 84.7
  
Blue-Green Dominance (% of cells): 83
           Carlson TSI: 58
                   
                                                                           
Blue-Greens (#/L): 5821865   Greens (#/L): 831695   Diatoms (#/L): 169734   Other Algae (#/L): 186707   Rotifers (#/L): 275   Zooplankton (#/L): 57
Blue-Greens (cells/L): 78723   Greens (cells/L): 13918   Diatoms (cells/L): 170   Other Algae (cells/L): 187   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2014

          
Sample Location: Deep Hole
Sample Date: 2014-07-21
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
8.84
0.5
10.92
2
8.7
7.8
456
511
172
186
0.01
0.103
0.068
0.211
63.83
0.013
0.013
0.085
1.155
1.323
1.828
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)
27.01
26.25
24.77
24.31
22.5
19.9
16.3
13.53
DO (mg/L)
20.45
16.89
12.23
5.4
0.45
0.31
0.29
0.21
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 69.7
  
Blue-Green Dominance (% of cells): 77
           Carlson TSI: 72
                   
                                                                           
Blue-Greens (#/L): 430031   Greens (#/L): 62737   Diatoms (#/L): 8528   Other Algae (#/L): 56037   Rotifers (#/L): 1137   Zooplankton (#/L): 38
Blue-Greens (cells/L): 1208   Greens (cells/L): 458   Diatoms (cells/L): 9   Other Algae (cells/L): 57   Rotifers (cells/L): 1   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)