Clean Lakes Program: Indiana - Elkhart County

 

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Indiana Clean Lakes Program Lake Report

Indiana

  

Elkhart County

1995

          
Sample Location: Deep Hole
Sample Date: 1995-07-05
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
1995
19.8
2.6
52
32
99
7.8
6.66
345
310
153
188
0.01
0.025
0.01
0.031
0.5
0.616
0.022
0.075
1.222
0.57
1.55
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)
24.8
23.2
25
25
24.9
24
19.5
15.6
13.5
11.5
10.2
9.8
9.2
8.8
8.2
8.2
8.2
8
8
8
8
8
7.9
DO (mg/L)
8.4
8.34
8.2
8.2
8.15
8.3
10
13
12.4
11.6
11.2
11.6
12.5
8.6
5.4
2
0.6
0.2
0.2
0.2
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 90
  
Blue-Green Dominance (% of NU): 50
  
          Carlson TSI: 36
                    Indiana TSI: 6
                                                                           
Blue-Greens (#/L): 709   Greens (#/L): 11   Diatoms (#/L): 88   Other Algae (#/L): 515   Rotifers (#/L): 77   Zooplankton (#/L): 21
 
 

2000

          
Sample Location: Deep Hole
Sample Date: 2000-07-24
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
2000
19.8
1.6
31
29
123.5
8.6
7.7
347.5
282.9
110
151
0.011
0.01
0.026
0.039
1.11
0.555
0.102
0.031
0.591
0.443
0.977
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
25.7
25.6
24.5
24.3
23.7
18.2
14.9
12.2
9.9
9
8.4
8
7.8
7.6
7.4
7.2
7.1
7.1
7
DO (mg/L)
10.1
10
10.1
9.9
10.6
10.5
11.6
17.8
19.3
19.3
12.7
5.7
1.5
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 58
  
Blue-Green Dominance (% of NU): 89
  
          Carlson TSI: 45
                    Indiana TSI: 22
                                                                           
Blue-Greens (#/L): 7319   Greens (#/L): 17   Diatoms (#/L): 17   Other Algae (#/L): 714   Rotifers (#/L): 105   Zooplankton (#/L): 12.9
 
 

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
20.1
2.8
45
26.9
106.2
8.6
7.6
349.7
260
128
157
0.01
0.01
0.01
0.036
0.68
0.052
0.026
0.025
1.024
0.511
1.661
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)
24.4
24.4
24.4
24.4
24.3
24.3
24.2
21.3
18.1
13.1
11.2
9.5
8.2
7.8
7.5
7.2
7.1
7
6.9
6.7
6.7
DO (mg/L)
8.85
8.9
8.95
8.95
8.7
8.68
8.72
19.03
19.2
14.61
11.85
7.99
5.55
3.48
2.15
1.1
0.23
0.07
0
0
0
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 25.7
  
          Carlson TSI: 36
                    Indiana TSI: 8
                                                                           
Blue-Greens (#/L): 904   Greens (#/L): 1599   Diatoms (#/L): 209   Other Algae (#/L): 782   Rotifers (#/L): 17   Zooplankton (#/L): 8.1
 
 

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
18.5
2.9
51
26.2
107.3
8.6
7.7
350.8
128
158
0.01
0.01
0.01
0.042
1.73
0.582
0.061
0.052
0.826
0.518
1.445
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)
24.5
24.5
24.4
24.4
24.3
24.3
24.1
22
17.3
13.7
10.8
9.3
8.7
7.9
7.5
7.4
7.2
7.1
6.8
6.8
DO (mg/L)
8.7
8.7
8.9
9
9
9
8.9
18.5
19.6
16.4
10.5
8.2
6.2
3.7
2.1
0.9
0.2
0
0
0
                                                                           
% Water Column Oxic: 72.2
  
Blue-Green Dominance (% of NU): 26.3
  
          Carlson TSI: 39
                    Indiana TSI: 8
                                                                           
Blue-Greens (#/L): 1319   Greens (#/L): 2419   Diatoms (#/L): 340   Other Algae (#/L): 940   Rotifers (#/L): 0   Zooplankton (#/L): 7.8
 
 

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
14.3
2.7
56
25
105.5
8.6
7.8
348.5
262.1
127
152
0.01
0.01
0.01
0.023
1.03
0.534
0.341
0.045
0.547
0.517
1.042
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)
24.3
24.4
24.4
24.4
24.3
24.2
24.1
22
17.5
13.8
10.7
9.6
8.5
7.9
7.6
7.5
DO (mg/L)
8.8
8.8
8.8
8.6
8.8
8.4
9
17.6
18.4
15
9.9
7.5
3.9
3.3
1.5
0
                                                                           
% Water Column Oxic: 93
  
Blue-Green Dominance (% of NU): 29.5
  
          Carlson TSI: 38
                    Indiana TSI: 5
                                                                           
Blue-Greens (#/L): 1312   Greens (#/L): 2315   Diatoms (#/L): 154   Other Algae (#/L): 637   Rotifers (#/L): 19   Zooplankton (#/L): 4.6
 
 

2010

          
Sample Location: Deep Hole
Sample Date: 2010-07-06
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
2010
19.8
2.4
40.5
23
111
8.4
7.3
334
241
123
162
0.01
0.01
0.013
0.043
0.55
0.5
0.038
0.038
0.761
0.632
1.351
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)
27.2
27.2
27.2
27
26.6
26.2
24.2
18.8
16.7
13.6
10.1
8.3
7.4
6.9
6.5
6.3
6.1
5.8
5.6
5.5
5.4
DO (mg/L)
8.7
8.8
8.8
8.9
9.3
9.8
16.6
20
20
18.2
12.3
11.7
9.4
6.5
2.8
1.2
0.4
0
0
0
0
                                                                           
% Water Column Oxic: 71
  
Blue-Green Dominance (% of NU): 46.1
  
Blue-Green Dominance (% of cells): 17.6
           Carlson TSI: 38
                    Indiana TSI: 31
                                                                           
Blue-Greens (#/L): 199994   Greens (#/L): 299991   Diatoms (#/L): 416654   Other Algae (#/L): 183328   Rotifers (#/L): 33332   Zooplankton (#/L): 1.6
Blue-Greens (cells/L): 3678   Greens (cells/L): 3365   Diatoms (cells/L): 417   Other Algae (cells/L): 333   Rotifers (cells/L): 183   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)