Clean Lakes Program: Bowen - Noble County

 

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Indiana Clean Lakes Program Lake Report

Bowen

  

Noble County

1991

          
Sample Location: Deep Hole
Sample Date: 1991-07-29
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
1.7
10
11.5
113.8
8.1
6.7
350
385
159.6
273
0.01
0.833
0.062
0.854
0.495
0.514
0.048
2.563
1.103
3.566
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
24
16
12
8.5
7
6
5.5
5
5
5
4.5
4
4
4
4
4
DO (mg/L)
9.5
9.4
10.8
6.1
0.7
0.3
1.4
1.2
1.1
0.5
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 60
  
Blue-Green Dominance (% of NU): 52
  
          Carlson TSI: 58
                    Indiana TSI: 34
                                                                           
Blue-Greens (#/L): 2559   Greens (#/L): 93   Diatoms (#/L): 884   Other Algae (#/L): 1349   Rotifers (#/L):   Zooplankton (#/L): 81
 
 

1994

          
Sample Location: Deep Hole
Sample Date: 1994-07-12
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
1994
11
3.1
60
17
101
8.6
7.4
390
400
162.5
282.3
0.01
1.074
0.01
0.772
3.57
0.04
0.022
0.049
3.545
0.23
5.66
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
26.5
26.5
26.5
25.5
19.5
13.5
9.5
7.5
6.5
6.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
DO (mg/L)
8.9
8.9
8.7
8.5
9
9.8
0.9
0.3
0.2
0.2
0.2
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 38
  
Blue-Green Dominance (% of NU): 75
  
          Carlson TSI: 41
                    Indiana TSI: 35
                                                                           
Blue-Greens (#/L): 29458   Greens (#/L): 121   Diatoms (#/L): 90   Other Algae (#/L): 9633   Rotifers (#/L): 0   Zooplankton (#/L): 45
 
 

2000

          
Sample Location: Deep Hole
Sample Date: 2000-08-15
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
2000
11
3
57
15
97.4
8.4
7
504
384
171
269
0.018
1.315
0.084
1.855
1.37
1.785
0.022
0.018
5.79
1.035
10.144
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
26.6
26.5
25.8
24.2
18.5
12.2
8.5
7.1
6.1
5.6
5.2
5
4.9
4.9
4.9
4.9
4.9
4.9
4.9
DO (mg/L)
7.9
7.9
7.9
8
10.5
15.1
5.5
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
0.9
                                                                           
% Water Column Oxic: 28
  
Blue-Green Dominance (% of NU): 95
  
          Carlson TSI: 49
                    Indiana TSI: 55
                                                                           
Blue-Greens (#/L): 166649   Greens (#/L): 171   Diatoms (#/L): 1200   Other Algae (#/L): 6728   Rotifers (#/L): 343   Zooplankton (#/L): 19.5
 
 

 

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)