Clean Lakes Program: Mongo Mill Pond - Lagrange County

 

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Indiana Clean Lakes Program Lake Report

Mongo Mill Pond

 

Lagrange County

1989

         
Sample Location: Deep Hole
Sample Date: 1989-07-25
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
4.6
0.8
18
3
85
7.6
680
267
0.01
0.095
1.408
0.032
2.954
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
24
DO (mg/L)
7.4
6.7
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 12
 
          Carlson TSI: 67
                    Indiana TSI: 22
                                                                           
Blue-Greens (#/L): 1650   Greens (#/L): 128   Diatoms (#/L): 5265   Other Algae (#/L): 0   Rotifers (#/L): 6509   Zooplankton (#/L): 0
 
 

1993

         
Sample Location: Deep Hole
Sample Date: 1993-07-05
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
4.6
1.1
19
7
74
7.9
7.9
610
610
225
226.5
0.01
0.01
0.106
0.012
4.86
0.964
0.999
0.075
0.046
1.168
0.347
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
24.8
24.5
DO (mg/L)
6.8
6.6
6.3
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 47
 
          Carlson TSI: 59
                    Indiana TSI: 27
                                                                           
Blue-Greens (#/L): 42547   Greens (#/L): 10943   Diatoms (#/L): 36682   Other Algae (#/L): 700   Rotifers (#/L): 102   Zooplankton (#/L): 0
 
 

2000

         
Sample Location: Deep Hole
Sample Date: 2000-07-05
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
4.6
1.1
18
6
74
7.9
633
217
0.01
0.044
0.27
2.597
0.073
1.074
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)
24.6
24.3
24
23.9
DO (mg/L)
6.2
6.2
6.2
5.7
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 1
 
          Carlson TSI: 45
                    Indiana TSI: 24
                                                                           
Blue-Greens (#/L): 530   Greens (#/L): 6187   Diatoms (#/L): 28989   Other Algae (#/L): 1237   Rotifers (#/L): 0   Zooplankton (#/L): 12.1
 
 

2003

         
Sample Location: Deep Hole
Sample Date: 2003-06-30
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
2003
1.83
1.1
21
6
68.5
8
612
243
0.014
0.037
2.44
1.713
0.085
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)
23.2
19.7
19
DO (mg/L)
7.6
6.6
6.3
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 54
 
          Carlson TSI: 51
                    Indiana TSI: 28
                                                                           
Blue-Greens (#/L): 5088   Greens (#/L): 341   Diatoms (#/L): 1702   Other Algae (#/L): 1169   Rotifers (#/L): 49   Zooplankton (#/L): 3.8
 
 

 

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)