Clean Lakes Program: Mill Pond - Marshall County

 

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Indiana Clean Lakes Program Lake Report

Mill Pond

  

Marshall County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-08-14
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
4.9
1
28
6
60
7.6
6.8
700
300
179
203
0.01
0.037
0.076
0.128
1.17
1.016
0.03
0.574
1.419
2.213
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
22.2
21.1
20.5
16
DO (mg/L)
6
4.2
0.2
0.1
0.1
                                                                           
% Water Column Oxic: 40
  
Blue-Green Dominance (% of NU): 6
  
          Carlson TSI: 64
                    Indiana TSI: 26
                                                                           
Blue-Greens (#/L): 1534   Greens (#/L): 20944   Diatoms (#/L): 0   Other Algae (#/L): 833   Rotifers (#/L): 1103   Zooplankton (#/L): 0
 
 

1995

          
Sample Location: Deep Hole
Sample Date: 1995-07-31
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
4.9
0.5
2
3.28
2.5
7.75
7.25
420
345
156
172
0.01
0.082
0.129
0.146
84.69
0.022
0.022
0.033
1.386
2.225
2.314
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)
32
29
26.8
24.5
20
17
DO (mg/L)
16.4
9.2
0.2
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 90
  
          Carlson TSI: 73
                    Indiana TSI: 51
                                                                           
Blue-Greens (#/L): 345964   Greens (#/L): 8053   Diatoms (#/L): 4474   Other Algae (#/L): 25351   Rotifers (#/L): 895   Zooplankton (#/L): 407.3
 
 

1999

          
Sample Location: Deep Hole
Sample Date: 1999-07-19
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
1999
4.9
1.3
22
10
75
8
7.3
390
355
150
149
0.01
0.01
0.043
0.078
17.55
0.022
0.022
0.018
0.018
1.386
1.374
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
25.5
25.5
24
20.5
DO (mg/L)
8.2
8.3
6.1
3.6
0.25
                                                                           
% Water Column Oxic: 100
  
Blue-Green Dominance (% of NU): 25
  
          Carlson TSI: 58
                    Indiana TSI: 18
                                                                           
Blue-Greens (#/L): 2274   Greens (#/L): 3189   Diatoms (#/L): 144   Other Algae (#/L): 2993   Rotifers (#/L): 457   Zooplankton (#/L): 97
 
 

2004

          
Sample Location: Deep Hole
Sample Date: 2004-08-11
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
2004
4.8
1.7
40
9.6
70
341
340
0.012
0.013
0.061
0.044
6.62
0.013
0.013
0.018
0.018
0.996
0.89
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
23
23
23
23
21.2
DO (mg/L)
6
6
6
6
5.8
0.3
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 68
  
          Carlson TSI: 55
                    Indiana TSI: 21
                                                                           
Blue-Greens (#/L): 6441   Greens (#/L): 217   Diatoms (#/L): 566   Other Algae (#/L): 2035   Rotifers (#/L): 84   Zooplankton (#/L): 79.5
 
 

2011

          
Sample Location: Deep Hole
Sample Date: 2011-08-09
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
2011
4.88
1.7
3.3
11.5
85
7.9
7.15
355
313
145
159
0.01
0.01
0.0315
0.17
17.76
0.013
0.013
0.018
0.57297
1.044274
2.818054
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)
28.3
28.3
28.3
28.2
26.2
19.7
DO (mg/L)
6.8
6.9
6.6
6.7
0.6
0
                                                                           
% Water Column Oxic: 41
  
Blue-Green Dominance (% of NU): 92.4
  
Blue-Green Dominance (% of cells): 63.3
           Carlson TSI: 55
                   
                                                                           
Blue-Greens (#/L): 1158725   Greens (#/L): 550129   Diatoms (#/L): 79729   Other Algae (#/L): 42522   Rotifers (#/L): 66   Zooplankton (#/L): 85.3
Blue-Greens (cells/L): 39116   Greens (cells/L): 2650   Diatoms (cells/L): 383   Other Algae (cells/L): 197   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)