Clean Lakes Program: Robinson - Whitley County

 

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Indiana Clean Lakes Program Lake Report

Robinson

  

Whitley County

1990

          
Sample Location: Deep Hole
Sample Date: 1990-07-03
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
1990
15.5
0.7
24
9
54
8
6.3
420
378
170.5
192.5
0.01
0.105
0.058
0.136
0.711
0.892
0.02
1.048
1.326
1.348
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
21.7
19.1
17
12.5
8.6
7.5
7
6.9
6.5
6
5.9
5.6
5.4
5.4
DO (mg/L)
7.8
1.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 20
  
Blue-Green Dominance (% of NU): 12
  
          Carlson TSI: 64
                    Indiana TSI: 25
                                                                           
Blue-Greens (#/L): 151   Greens (#/L): 118   Diatoms (#/L): 201   Other Algae (#/L): 302   Rotifers (#/L): 442   Zooplankton (#/L): 0
 
 

2004

          
Sample Location: Deep Hole
Sample Date: 2004-07-20
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
2004
14.9
0.8
42
18
107.2
8.7
7.5
379
357
148
225
0.021
0.061
0.073
0.111
20.51
0.572
0.911
0.018
0.771
1.083
1.322
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)
25.5
25.5
25.3
24.8
24.2
22.7
16.8
13.3
11.6
9.8
8.4
7.3
6.5
5.9
DO (mg/L)
11.2
11.2
8.76
4.1
1.2
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 25
  
Blue-Green Dominance (% of NU): 57.8
  
          Carlson TSI: 63
                    Indiana TSI: 33
                                                                           
Blue-Greens (#/L): 446   Greens (#/L): 61   Diatoms (#/L): 177   Other Algae (#/L): 61   Rotifers (#/L): 22   Zooplankton (#/L): 5.3
 
 

2011

          
Sample Location: Deep Hole
Sample Date: 2011-07-12
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
15.24
1.4
19.06
11.2
120
8.2
7.4
403
318
167.5
238
0.01
0.17
0.069
0.477
17.52
1.160092
0.161737
0.018
3.260575
1.349206
3.440203
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
28.3
27.3
24.3
22.1
13.1
9.1
7.7
7.2
6.8
6.5
6.2
5.6
5.3
5.2
DO (mg/L)
10.7
10.7
9.8
8
2.1
0.2
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 19.7
  
Blue-Green Dominance (% of NU): 68.3
  
Blue-Green Dominance (% of cells): 25.1
           Carlson TSI: 60
                   
                                                                           
Blue-Greens (#/L): 1749947   Greens (#/L): 1666616   Diatoms (#/L): 2716584   Other Algae (#/L): 816642   Rotifers (#/L): 33332   Zooplankton (#/L): 14.8
Blue-Greens (cells/L): 32504   Greens (cells/L): 3355   Diatoms (cells/L): 5467   Other Algae (cells/L): 6241   Rotifers (cells/L): 33   Zooplankton (cells/L): 0
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-07-12
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
14.9
1.25
30.3
14.7
12.3
8.2
7.4
383.5
290.3
139
208
0.01
0.416
0.023
0.528
9.93
0.02
0.035
0.066
2.501
0.735
3.15
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)
28.8
28.7
28.4
27.9
27.63
23.8
21.6
15.2
10.2
8.2
7.6
7
6.4
6.2
6
6
DO (mg/L)
0.92
0.9
0.94
1
1.03
1.09
0.81
0.14
0.09
0.07
0.06
0.06
0.05
0.04
0.04
0.04
                                                                           
% Water Column Oxic: 14.3
  
Blue-Green Dominance (% of NU): 88.8
  
Blue-Green Dominance (% of cells): 60.4
           Carlson TSI: 65
                   
                                                                           
Blue-Greens (#/L): 2715011   Greens (#/L): 472177   Diatoms (#/L): 463095   Other Algae (#/L): 844468   Rotifers (#/L): 8   Zooplankton (#/L): 58
Blue-Greens (cells/L): 23017   Greens (cells/L): 1281   Diatoms (cells/L): 463   Other Algae (cells/L): 1171   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2013

          
Sample Location: Deep Hole
Sample Date: 2013-06-25
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
2013
15.24
1
2.56
6.88
7.75
7.2
364
352
131
185
0.006
0.067
0.064
0.108
7.72
3.075
1.557
0.095
1.255
1.125
2.107
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)
27.92
25.46
23.36
21.63
16.58
13.56
10.11
8.14
7.34
7.03
6.55
6.23
5.65
5.45
5.31
DO (mg/L)
8.95
7.3
4.02
1
0.24
0.19
0.16
0.16
0.17
0.15
0.14
0.15
0.12
0.14
0.14
                                                                           
% Water Column Oxic: 19.69
  
Blue-Green Dominance (% of NU): 95.5
  
Blue-Green Dominance (% of cells): 93
           Carlson TSI: 60
                   
                                                                           
Blue-Greens (#/L): 81585   Greens (#/L): 429   Diatoms (#/L): 859   Other Algae (#/L): 4293   Rotifers (#/L): 353   Zooplankton (#/L): 223
Blue-Greens (cells/L): 294   Greens (cells/L): 0   Diatoms (cells/L): 1   Other Algae (cells/L): 13   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2014

          
Sample Location: Deep Hole
Sample Date: 2014-08-05
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
2014
15.39
0.7
12
6.5
8.4
7.9
411
586
157
226
0.01
0.626
0.069
0.707
33.4
0.013
0.013
0.018
2.278
1.164
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)
26.03
25.71
24.57
23.53
21.7
16.47
9.54
8.85
6.7
6.33
5.8
5.25
4.86
4.6
4.53
DO (mg/L)
9.07
8.97
4.54
1.04
0.57
0.09
0.08
0.05
0.04
0.03
0.02
0.02
0.02
0.02
0.02
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 97.7
  
Blue-Green Dominance (% of cells): 83.1
           Carlson TSI: 73
                   
                                                                           
Blue-Greens (#/L): 149000   Greens (#/L): 3605   Diatoms (#/L): 18826   Other Algae (#/L): 7611   Rotifers (#/L): 269   Zooplankton (#/L): 48
Blue-Greens (cells/L): 2744   Greens (cells/L): 40   Diatoms (cells/L): 19   Other Algae (cells/L): 7   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)