Clean Lakes Program: George (Hobart) - Lake County

 

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Indiana Clean Lakes Program Lake Report

George (Hobart)

 

Lake County

1995

         
Sample Location: Deep Hole
Sample Date: 1995-07-11
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
1995
2.7
0.4
2
3
86
7.75
800
209
0.01
0.173
65.21
0.221
0.033
1.906
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)
27.5
25.5
24.5
DO (mg/L)
17.2
11.7
7.2
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 40
 
          Carlson TSI: 74
                    Indiana TSI: 18
                                                                           
Blue-Greens (#/L): 5802   Greens (#/L): 5955   Diatoms (#/L): 382   Other Algae (#/L): 1985   Rotifers (#/L): 382   Zooplankton (#/L): 63.2
 
 

2001

         
Sample Location: Deep Hole
Sample Date: 2001-07-02
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
2.7
0.3
3.5
3.2
88
8.6
7.9
817
802
178
174
0.013
0.014
0.158
0.149
52.66
0.017
0.013
0.028
0.029
1.504
1.449
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)
27.1
24.3
23.4
23.2
20.1
DO (mg/L)
17.4
9.5
7.3
6.3
1.3
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 4
 
          Carlson TSI: 74
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 1053   Greens (#/L): 0   Diatoms (#/L): 23163   Other Algae (#/L): 0   Rotifers (#/L): 301   Zooplankton (#/L): 1085.3
 
 

2005

         
Sample Location: Deep Hole
Sample Date: 2005-07-05
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
2005
2.4
0.5
4
5.5
56.8
8.83
796
216
0.183
0.322
26.26
0.013
0.178
1.252
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)
28.7
27.6
26.7
26.3
DO (mg/L)
12.3
7.3
4.5
2
                                                                           
% Water Column Oxic: 83.3
 
Blue-Green Dominance (% of NU): 59
 
          Carlson TSI: 73
                    Indiana TSI: 30
                                                                           
Blue-Greens (#/L): 1519   Greens (#/L): 82   Diatoms (#/L): 41   Other Algae (#/L): 0   Rotifers (#/L): 903   Zooplankton (#/L): 29.3
 
 

2010

         
Sample Location: Deep Hole
Sample Date: 2010-07-26
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
2010
2.1
0.4
1.1
4.3
37.5
7.6
368
109
0.095
0.191
5.98
0.826
0.145
1.34
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)
26.7
26.2
25
24.7
DO (mg/L)
4.3
3.7
3
2.5
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 35.8
 
Blue-Green Dominance (% of cells): 8.6
          Carlson TSI: 67
                    Indiana TSI: 46
                                                                           
Blue-Greens (#/L): 226184   Greens (#/L): 1119014   Diatoms (#/L): 1059492   Other Algae (#/L): 238088   Rotifers (#/L): 0   Zooplankton (#/L): 4.8
Blue-Greens (cells/L): 1486   Greens (cells/L): 1369   Diatoms (cells/L): 1059   Other Algae (cells/L): 238   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)