Clean Lakes Program: Yellowwood - Brown County

 

Go back to the Indiana Clean Lakes Website

Go back to the Indiana Map to select another county

Indiana Clean Lakes Program Lake Report

Yellowwood

  

Brown County

1990

          
Sample Location: Deep Hole
Sample Date: 1990-06-26
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
1990
8.8
3.5
39
23
94
7.5
6.5
145
141
37
50
0.01
0.01
0.024
0.036
0.075
0.065
0.018
0.311
0.574
0.981
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)
23.8
23.2
22.6
17.2
13.2
11.1
10.1
9.1
9
DO (mg/L)
8
8.1
8.1
10.5
6.1
4.3
1.3
0.2
0.2
                                                                           
% Water Column Oxic: 78
  
Blue-Green Dominance (% of NU): 2
  
          Carlson TSI: 46
                    Indiana TSI: 8
                                                                           
Blue-Greens (#/L): 241   Greens (#/L): 670   Diatoms (#/L): 8256   Other Algae (#/L): 986   Rotifers (#/L): 468   Zooplankton (#/L): 0
 
 

1992

          
Sample Location: Deep Hole
Sample Date: 1992-06-22
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
9.1
4.3
44
97.29
52
43
0.01
0.01
0.033
0.085
0.128
0.127
0.022
0.019
0.26
0.496
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)
23.5
23.2
23.1
22.9
19.2
16
13.1
12
DO (mg/L)
8.3
8.2
8.3
8.3
8.9
9.9
5.6
2.1
2
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 1
  
          Carlson TSI: 47
                    Indiana TSI: 7
                                                                           
Blue-Greens (#/L): 114   Greens (#/L): 33   Diatoms (#/L): 8823   Other Algae (#/L): 2865   Rotifers (#/L): 567   Zooplankton (#/L): 0
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-07-22
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
1997
9.1
4.8
58
21
96.2
7.71
6.79
120
38.9
44.9
0.01
0.01
0.108
0.089
0.85
0.022
0.027
0.018
0.17
0.32
0.578
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
29
29
29
27.1
20.9
15.9
14
12.5
11
DO (mg/L)
7.4
7.4
7.4
7.4
9
8.2
4.8
1.9
0.8
0.8
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 23
  
          Carlson TSI: 46
                    Indiana TSI: 6
                                                                           
Blue-Greens (#/L): 918   Greens (#/L): 47   Diatoms (#/L): 235   Other Algae (#/L): 2823   Rotifers (#/L): 12   Zooplankton (#/L): 19.6
 
 

2001

          
Sample Location: Deep Hole
Sample Date: 2001-08-20
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
2001
9.1
3.4
40
19
102
8
7.15
170
170
52
107
0.01
0.049
0.01
0.124
0.25
0.013
0.013
0.018
0.294
0.271
1.357
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
27.1
27.1
27.1
27
27
26.9
21
15.6
13
DO (mg/L)
8.1
8.1
8.1
8.1
8.1
8.1
8.1
1.8
1.4
0.5
                                                                           
% Water Column Oxic: 88
  
Blue-Green Dominance (% of NU): 81
  
          Carlson TSI: 32
                    Indiana TSI: 20
                                                                           
Blue-Greens (#/L): 5512   Greens (#/L): 31   Diatoms (#/L): 638   Other Algae (#/L): 535   Rotifers (#/L): 51   Zooplankton (#/L): 11.5
 
 

2005

          
Sample Location: Deep Hole
Sample Date: 2005-06-15
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
2005
9.1
3.2
42
26
108.9
7.8
7
154.8
113.6
43
44.5
0.01
0.012
0.041
0.85
0.018
0.014
0.02
0.112
0.333
0.487
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
26.4
26.4
26.4
22.4
17.2
14
13.5
12.6
11.1
10.3
DO (mg/L)
8.6
8.7
8.7
8.6
11.4
6.9
2
0.9
0
0
0
                                                                           
% Water Column Oxic: 54.9
  
Blue-Green Dominance (% of NU): 42.6
  
          Carlson TSI: 0
                    Indiana TSI: 12
                                                                           
Blue-Greens (#/L): 16827   Greens (#/L): 14   Diatoms (#/L): 21005   Other Algae (#/L): 1615   Rotifers (#/L): 42   Zooplankton (#/L): 35.1
 
 

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
8.5
4.3
27
21
86
7.95
7.6
167
142
47
75
0.01
0.01
0.01
0.08
1.48
0.013
0.013
0.018
0.018
0.231
0.781
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)
28.6
28.6
28.5
28.4
28.2
27.6
23.4
16.9
13
DO (mg/L)
6.8
6.6
6.3
6.3
5.9
5.3
4.5
6.7
0
                                                                           
% Water Column Oxic: 70.6
  
Blue-Green Dominance (% of NU): 86.9
  
          Carlson TSI: 37
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 2034   Greens (#/L): 18   Diatoms (#/L): 126   Other Algae (#/L): 144   Rotifers (#/L): 0   Zooplankton (#/L): 19.8
 
 

2012

          
Sample Location: Deep Hole
Sample Date: 2012-07-18
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
2012
8.2
2.8
6.8
6.7
139
193
43
79
0.01
0.01
0.027
0.078
4.13
0.013
0.013
0.018
0.286
0.621
0.377
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)
29.68
29.6
29.48
29.5
29.1
25.5
20.1
14.9
11.8
11.3
DO (mg/L)
7.38
7.5
7.44
7.68
6.7
4.6
3.8
1.2
0.8
0.3
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 72.5
  
Blue-Green Dominance (% of cells): 26.3
           Carlson TSI: 50
                   
                                                                           
Blue-Greens (#/L): 622689   Greens (#/L): 852999   Diatoms (#/L): 716519   Other Algae (#/L): 170600   Rotifers (#/L): 552   Zooplankton (#/L): 339
Blue-Greens (cells/L): 5034   Greens (cells/L): 1017   Diatoms (cells/L): 717   Other Algae (cells/L): 172   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2015

          
Sample Location: deep hole
Sample Date: 2015-07-29
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
2015
8.5
2.4
12.84
9.512
6.4
6.9
145
194
48.5
69
0.01
0.01
0.029
0.0495
2.925
0.013
0.013
0.018
0.244
0.249
0.784
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)
29.6
29.52
26.29
22.86
19.58
17.03
14.15
11.21
DO (mg/L)
7.77
6.94
8.45
6.48
2.23
1
0.35
0.8
                                                                           
% Water Column Oxic: 58.88
  
Blue-Green Dominance (% of NU):
 
Blue-Green Dominance (% of cells):
          Carlson TSI: 48
                   
                                                                           
Blue-Greens (#/L):   Greens (#/L):   Diatoms (#/L):   Other Algae (#/L):   Rotifers (#/L):   Zooplankton (#/L):
Blue-Greens (cells/L):   Greens (cells/L):   Diatoms (cells/L):   Other Algae (cells/L):   Rotifers (cells/L):   Zooplankton (cells/L):
 
 

 

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)