Clean Lakes Program: North - Vigo County

 

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Indiana Clean Lakes Program Lake Report

North

 

Vigo County

1997

         
Sample Location: Deep Hole
Sample Date: 1997-07-21
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
8.5
0.8
30
9
1.73
8.29
7.08
500
650
174.7
352.2
0.01
0.304
0.032
0.334
13.24
0.022
0.027
0.018
1.494
0.689
2.304
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)
30
30
29.2
25.7
23.5
12.2
11.8
11
10.4
10
DO (mg/L)
11.5
11.5
13.5
9.9
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 33.3
 
Blue-Green Dominance (% of NU): 93
 
          Carlson TSI: 58
                    Indiana TSI: 37
                                                                           
Blue-Greens (#/L): 16784   Greens (#/L): 99   Diatoms (#/L): 692   Other Algae (#/L): 363   Rotifers (#/L): 132   Zooplankton (#/L): 6.1
 
 

1999

         
Sample Location: Deep Hole
Sample Date: 1999-07-26
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
1999
8.5
1
19
11.5
120
8.7
7.1
485
479
128
255
0.012
0.137
0.04
0.221
8.28
0.022
0.022
0.018
1.339
0.896
2.912
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)
33.3
32.3
31.5
30.9
28.5
23.8
15.9
10.9
9.8
9.4
DO (mg/L)
9.61
9.39
8.6
8
2.42
0.28
0.17
0.19
0.18
0.18
                                                                           
% Water Column Oxic: 47
 
Blue-Green Dominance (% of NU): 12
 
          Carlson TSI: 56
                    Indiana TSI: 27
                                                                           
Blue-Greens (#/L): 269   Greens (#/L): 28   Diatoms (#/L): 1485   Other Algae (#/L): 283   Rotifers (#/L): 226   Zooplankton (#/L): 16.7
 
 

 

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)