Clean Lakes Program: Henry - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Henry

 

Steuben County

1992

         
Sample Location: Deep Hole
Sample Date: 1992-08-25
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
1992
6.1
0.9
20
7.2
164.7
7.4
8.15
550
595
216
217.5
0.029
0.01
0.04
0.086
1.53
1.554
0.046
0.06
0.715
0.786
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)
27.9
24.9
22.25
20
18.1
15.5
13.5
DO (mg/L)
15.2
19.4
14.4
2.9
1.15
0.35
0.2
                                                                           
% Water Column Oxic: 86.2
 
Blue-Green Dominance (% of NU): 24
 
          Carlson TSI: 60
                    Indiana TSI: 42
                                                                           
Blue-Greens (#/L): 55819   Greens (#/L): 9101   Diatoms (#/L): 607   Other Algae (#/L): 157750   Rotifers (#/L): 9708   Zooplankton (#/L): 0
 
 

1997

         
Sample Location: Deep Hole
Sample Date: 1997-08-25
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
1997
6.1
0.9
16
6
90.1
8.26
7.51
449
510
226.3
320.8
0.013
0.234
0.08
0.28
39.48
1.375
0.081
0.018
2.41
1.7
3.6
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)
20
19.2
18.8
18
17.1
15
12.2
DO (mg/L)
11.4
12.2
8.4
5.5
2.6
0.1
0.1
                                                                           
% Water Column Oxic: 66.7
 
Blue-Green Dominance (% of NU): 68
 
          Carlson TSI: 65
                    Indiana TSI: 56
                                                                           
Blue-Greens (#/L): 167436   Greens (#/L): 1815   Diatoms (#/L): 1271   Other Algae (#/L): 73945   Rotifers (#/L): 424   Zooplankton (#/L): 48.5
 
 

2002

         
Sample Location: Deep Hole
Sample Date: 2002-08-12
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
2002
6.1
1.3
47
9.8
134.5
8.3
7.5
510
500
189
239
0.008
0.008
0.078
0.084
13.64
0.136
0.05
0.018
0.274
0.82
1.612
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)
27.3
26.8
26.5
26
23.7
19.3
13.5
DO (mg/L)
10.29
10.23
10.75
10.79
5.44
0.53
0.43
                                                                           
% Water Column Oxic: 51.8
 
Blue-Green Dominance (% of NU): 96
 
          Carlson TSI: 60
                    Indiana TSI: 50
                                                                           
Blue-Greens (#/L): 380837   Greens (#/L): 2066   Diatoms (#/L): 3292   Other Algae (#/L): 8779   Rotifers (#/L): 1485   Zooplankton (#/L): 33.3
 
 

2010

         
Sample Location: Deep Hole
Sample Date: 2010-06-30
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
2010
6.1
1.8
6.8
9.8
90.4
8
7.4
561
462
281
306
0.01
0.019
0.023
0.146
5.61
2.618
1.016
0.086
1.388
1.316
2.677
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)
23.1
22.8
22.3
20.5
15.2
12.2
10
9.4
DO (mg/L)
7.8
8.2
7.8
7.8
2.8
0
0
0
                                                                           
% Water Column Oxic: 49
 
Blue-Green Dominance (% of NU): 99.6
 
Blue-Green Dominance (% of cells): 94.5
          Carlson TSI: 49
                    Indiana TSI: 54
                                                                           
Blue-Greens (#/L): 3424004   Greens (#/L): 58034   Diatoms (#/L): 116068   Other Algae (#/L): 24872   Rotifers (#/L): 0   Zooplankton (#/L): 166.4
Blue-Greens (cells/L): 213930   Greens (cells/L): 265   Diatoms (cells/L): 547   Other Algae (cells/L): 25   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)