Clean Lakes Program: Bear Creek - Brown County

 

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Indiana Clean Lakes Program Lake Report

Bear Creek

  

Brown County

1992

          
Sample Location: Deep Hole
Sample Date: 1992-06-30
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
1992
6.1
3.3
57
19.5
96.8
7.6
6.6
179
188
30.5
28
0.01
0.01
0.036
0.037
0.072
0.073
0.022
0.018
0.483
0.506
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
24.2
24
23.9
19.9
14.5
11.3
DO (mg/L)
8.2
8.15
8.15
8.15
10.6
8.67
1.8
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 12
  
          Carlson TSI: 50
                    Indiana TSI: 3
                                                                           
Blue-Greens (#/L): 149   Greens (#/L): 74   Diatoms (#/L): 297   Other Algae (#/L): 557   Rotifers (#/L): 181   Zooplankton (#/L): 0
 
 

1996

          
Sample Location: Deep Hole
Sample Date: 1996-08-19
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
1996
6.1
4.3
19
15.4
12.9
7.91
6.92
29
36.1
0.01
0.01
0.022
0.025
0.97
0.053
0.051
0.02
0.018
0.242
0.296
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
26.9
26.7
26.6
26
21.9
15.2
12.3
DO (mg/L)
7.9
7.9
7.7
7.5
7.4
4.4
1.3
0.4
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 25
  
          Carlson TSI: 39
                    Indiana TSI: 6
                                                                           
Blue-Greens (#/L): 1821   Greens (#/L): 124   Diatoms (#/L): 248   Other Algae (#/L): 4822   Rotifers (#/L): 166   Zooplankton (#/L): 70
 
 

2001

          
Sample Location: Deep Hole
Sample Date: 2001-07-18
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
2001
6.1
3.6
45
16
91.6
8.1
7
210
172
36.5
52
0.02
0.01
0.01
0.043
2.26
0.013
0.013
0.018
0.018
0.303
0.726
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)
28.4
28.2
27.8
27.3
26.3
22.8
17.7
DO (mg/L)
7.15
7.22
7.19
7.31
7.43
9.71
1.11
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 84
  
          Carlson TSI: 39
                    Indiana TSI: 13
                                                                           
Blue-Greens (#/L): 1847   Greens (#/L): 15   Diatoms (#/L): 161   Other Algae (#/L): 132   Rotifers (#/L): 29   Zooplankton (#/L): 17.7
 
 

2005

          
Sample Location: Deep Hole
Sample Date: 2005-08-18
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
2005
6.1
2.6
24
12.8
98
7.8
7.1
150
155
34
66
0.01
0.01
0.014
0.056
4.92
0.013
0.013
0.018
0.018
0.317
0.93
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)
27.8
27.6
27.6
27.5
26.8
21.8
16
DO (mg/L)
8
7.7
7.7
7.6
7.7
1.3
0
                                                                           
% Water Column Oxic: 65.6
  
Blue-Green Dominance (% of NU): 87.9
  
          Carlson TSI: 45
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 4167   Greens (#/L): 198   Diatoms (#/L): 66   Other Algae (#/L): 265   Rotifers (#/L): 0   Zooplankton (#/L): 45.3
 
 

2014

          
Sample Location: Deep Hole
Sample Date: 2014-08-18
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
6.1
3.2
49.4
10.5
7.1
6.9
137
156
41
59
0.01
0.01
0.023
0.042
13.79
0.013
0.013
0.018
0.018
0.651
0.9455
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)
24.25
24.26
24.2
23.56
20.4
14.4
DO (mg/L)
7.78
7.71
7.54
5.06
1.11
0.25
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 91.9
  
Blue-Green Dominance (% of cells): 25.4
           Carlson TSI: 51
                   
                                                                           
Blue-Greens (#/L): 2132   Greens (#/L): 687   Diatoms (#/L): 245   Other Algae (#/L): 1531   Rotifers (#/L): 2773   Zooplankton (#/L): 1015
Blue-Greens (cells/L): 79   Greens (cells/L): 1   Diatoms (cells/L): 0   Other Algae (cells/L): 3   Rotifers (cells/L): 2   Zooplankton (cells/L): 1
 
 

 

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)