Clean Lakes Program: Knapp - Noble County

 

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Indiana Clean Lakes Program Lake Report

Knapp

  

Noble County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-08-16
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
17.4
1.2
68
15.5
117
8.7
7.4
450
470
201
284
0.011
0.248
0.03
0.326
6.898
2.176
0.073
3.906
2.095
4.904
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
23.8
23.5
20.5
15
11
9
7.9
7
7
7
6.7
6.5
6.5
6
6
6
DO (mg/L)
9.9
9.8
9.6
8.6
0.4
0.3
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 35.3
  
Blue-Green Dominance (% of NU): 94
  
          Carlson TSI: 55
                    Indiana TSI: 43
                                                                           
Blue-Greens (#/L): 27507   Greens (#/L): 0   Diatoms (#/L): 930   Other Algae (#/L): 743   Rotifers (#/L): 15   Zooplankton (#/L): 0
 
 

1991

          
Sample Location: Deep Hole
Sample Date: 1991-07-30
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
1991
18
2.1
32
17.25
105.3
8.2
7.2
370
445
182.7
247.8
0.01
0.14
0.036
0.205
3.683
2.893
0.044
0.595
1.267
1.882
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
25
25
24.5
24
23
16
14
12
10
9
8.5
8
7.5
7.5
7
7
6.5
DO (mg/L)
8.7
8.75
8.7
8.7
8.6
5.1
2.8
1.9
3
3.1
2.6
0.7
0.5
0.2
0.2
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 67
  
Blue-Green Dominance (% of NU): 91
  
          Carlson TSI: 53
                    Indiana TSI: 31
                                                                           
Blue-Greens (#/L): 15011   Greens (#/L): 347   Diatoms (#/L): 70   Other Algae (#/L): 867   Rotifers (#/L):   Zooplankton (#/L): 267
 
 

1993

          
Sample Location: Deep Hole
Sample Date: 1993-08-23
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
1993
17.4
1.7
45
16
96
7.9
7.1
550
450
189
253
0.01
0.726
0.024
0.61
1.94
2.464
0.087
0.076
2.539
0.23
0.23
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)
27.5
27
26.5
25
23.8
19.2
12.7
10
8.3
7.2
6.8
6.1
5.9
5.4
5.2
5
4.9
4.8
4.8
4.8
DO (mg/L)
7.8
7.9
8
8
7.3
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 22.2
  
Blue-Green Dominance (% of NU): 68
  
          Carlson TSI: 46
                    Indiana TSI: 34
                                                                           
Blue-Greens (#/L): 4441   Greens (#/L): 116   Diatoms (#/L): 696   Other Algae (#/L): 1127   Rotifers (#/L): 128   Zooplankton (#/L): 0
 
 

2000

          
Sample Location: Deep Hole
Sample Date: 2000-08-08
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
2000
17.4
1.9
26
14
113.5
8.4
7.85
558
371.6
167
231
0.026
0.66
0.026
0.671
3.31
5.787
0.405
0.046
1.816
1.064
3.288
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
25.9
25.9
25.4
23.1
17
12.9
10.4
9.1
8.4
7.8
7.5
7.3
7.1
7
6.7
6.5
6.4
DO (mg/L)
9.14
9.2
9.22
9.23
9.42
11.35
1.41
0.42
1.13
4.35
3.26
0.41
0.38
0.36
0.36
0.35
0.34
0.35
0.34
                                                                           
% Water Column Oxic: 53
  
Blue-Green Dominance (% of NU): 92
  
          Carlson TSI: 48
                    Indiana TSI: 39
                                                                           
Blue-Greens (#/L): 50887   Greens (#/L): 1131   Diatoms (#/L): 699   Other Algae (#/L): 1933   Rotifers (#/L): 494   Zooplankton (#/L): 12.6
 
 

2003

          
Sample Location: Deep Hole
Sample Date: 2003-08-12
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
2003
17.3
1.2
32
9.5
125
8.6
7.5
498
368
156
238
0.01
0.626
0.02
0.604
3.01
4.193
0.17
0.03
1.887
1.273
3.046
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
26.1
25.8
25.7
23.5
21.7
17.6
14.1
12
9.8
8.1
7.2
6.8
6.5
6.3
5.9
5.8
5.8
5.7
DO (mg/L)
9.9
10.2
10.5
3.7
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 17.3
  
Blue-Green Dominance (% of NU): 99
  
          Carlson TSI: 48
                    Indiana TSI: 68
                                                                           
Blue-Greens (#/L): 742351   Greens (#/L): 631   Diatoms (#/L): 1263   Other Algae (#/L): 8417   Rotifers (#/L): 421   Zooplankton (#/L): 87.3
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-06-26
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
2012
17
2.35
27.08
18
107.8
8.2
7.4
448.4
314.9
176.5
232
0.01
0.347
0.019
0.378
3.19
2.16
1.06
0.018
1.57
0.84
2.42
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
26.2
26.2
21
16.2
12.8
10
8
6.7
5.9
5.5
5.2
5
4.9
4.9
4.8
DO (mg/L)
8.58
8.76
8.86
8.99
9.31
11.1
8.67
4.78
3.6
3.67
4.66
5.97
6.35
5.96
5.31
1.3
0.32
0.13
                                                                           
% Water Column Oxic: 81.25
  
Blue-Green Dominance (% of NU): 72.2
  
Blue-Green Dominance (% of cells): 49
           Carlson TSI: 57
                   
                                                                           
Blue-Greens (#/L): 88132   Greens (#/L): 47403   Diatoms (#/L): 32047   Other Algae (#/L): 12018   Rotifers (#/L): 259   Zooplankton (#/L): 66
Blue-Greens (cells/L): 813   Greens (cells/L): 244   Diatoms (cells/L): 57   Other Algae (cells/L): 12   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)