Clean Lakes Program: Geist Reservoir - Marion County

 

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Indiana Clean Lakes Program Lake Report

Geist Reservoir

 

Marion County

1991

         
Sample Location: Deep Hole
Sample Date: 1991-08-21
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
1991
6.7
0.4
9
5.5
82.6
8.3
7.8
458
450
156.5
156.5
0.01
0.01
0.106
0.106
0.632
0.483
0.017
0.02
1.655
1.741
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
26
25.3
25.3
25.3
25.3
25.3
25
DO (mg/L)
8.8
7.5
6.7
6.5
6.5
6.1
4.7
5.1
5.5
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 63
 
          Carlson TSI: 72
                    Indiana TSI: 31
                                                                           
Blue-Greens (#/L): 15534   Greens (#/L): 6336   Diatoms (#/L): 2467   Other Algae (#/L): 224   Rotifers (#/L):   Zooplankton (#/L): 153
 
 

1996

         
Sample Location: Deep Hole
Sample Date: 1996-07-08
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
1996
6.7
0.8
25
11
120.5
8.19
7.6
560
540
183.7
198.7
0.01
0.01
0.05
0.044
9.85
2.312
1.912
0.018
0.346
0.672
0.682
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
27
26.7
26.5
26.2
25.2
23.5
19.1
DO (mg/L)
9.3
9.5
9.6
9.3
8.5
3.7
0.1
0.1
                                                                           
% Water Column Oxic: 75
 
Blue-Green Dominance (% of NU): 18
 
          Carlson TSI: 59
                    Indiana TSI: 20
                                                                           
Blue-Greens (#/L): 920   Greens (#/L): 903   Diatoms (#/L): 886   Other Algae (#/L): 1522   Rotifers (#/L): 819   Zooplankton (#/L): 112
 
 

2002

         
Sample Location: Deep Hole
Sample Date: 2002-08-14
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
2002
6.7
0.3
1
3
76.3
8.1
8
650
650
196
200
0.024
0.026
0.185
0.183
46.26
0.023
0.031
0.026
0.049
1.239
1.028
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)
26.3
26.2
26.1
26.1
26.1
26
26
26
DO (mg/L)
7.02
6.63
6.2
6.13
5.85
5.56
5.6
5.25
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 65
 
          Carlson TSI: 75
                    Indiana TSI: 28
                                                                           
Blue-Greens (#/L): 4426   Greens (#/L): 203   Diatoms (#/L): 447   Other Algae (#/L): 487   Rotifers (#/L): 1096   Zooplankton (#/L): 176.9
 
 

2009

         
Sample Location: Deep Hole
Sample Date: 2009-07-21
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
2009
7.32
0.6
3.16
4.92
147.4
8.6
7.9
432.4
435.2
167.75
175.5
0.01
0.01
0.064
0.075
32.15
0.194
0.312
0.018
0.269
1.226
1.019
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)
25.4
25.3
24.8
24.6
24.4
24
23.8
23.8
23.6
DO (mg/L)
15
14.8
12.2
10.9
8.4
4.7
4.6
3.6
0.85
                                                                           
% Water Column Oxic: 81.96
 
Blue-Green Dominance (% of NU): 80.9
 
          Carlson TSI: 65
                    Indiana TSI: 32
                                                                           
Blue-Greens (#/L): 18912   Greens (#/L): 2072   Diatoms (#/L): 1776   Other Algae (#/L): 197   Rotifers (#/L): 197   Zooplankton (#/L): 216.3
 
 

2013

         
Sample Location: Deep Hole
Sample Date: 2013-08-07
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
2013
8.25
8.15
166
166
0.04
0.05
19.98
0.013
0.013
0.018
0.013
0.6645
0.561
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)
DO (mg/L)
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 84.7
 
Blue-Green Dominance (% of cells): 40.1
          Carlson TSI: 0
                   
                                                                           
Blue-Greens (#/L): 61416   Greens (#/L): 30974   Diatoms (#/L): 3738   Other Algae (#/L): 56609   Rotifers (#/L): 202   Zooplankton (#/L): 390
Blue-Greens (cells/L): 1509   Greens (cells/L): 52   Diatoms (cells/L): 4   Other Algae (cells/L): 217   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2014

         
Sample Location: Deep Hole
Sample Date: 2014-08-07
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
2014
7.07
1
10.97
5
8.5
7.4
474
498
159
170
0.01
0.073
0.082
0.137
36.49
0.013
0.013
0.018
0.077
0.74
0.776
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)
25.72
25.67
25.55
25.31
25.03
24.46
23.9
DO (mg/L)
11.45
11.53
11.3
10.07
8.15
0.47
0.14
                                                                           
% Water Column Oxic:
 
Blue-Green Dominance (% of NU): 45
 
Blue-Green Dominance (% of cells): 22
          Carlson TSI: 66
                   
                                                                           
Blue-Greens (#/L): 44059   Greens (#/L): 133779   Diatoms (#/L): 12817   Other Algae (#/L): 8010   Rotifers (#/L): 849   Zooplankton (#/L): 364
Blue-Greens (cells/L): 687   Greens (cells/L): 814   Diatoms (cells/L): 18   Other Algae (cells/L): 9   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2015

         
Sample Location: deep hole
Sample Date: 2015-08-05
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
2015
7.2
1
7.16
10.4965
8.3
438
175
0.01
0.065
22.745
0.1045
0.026
0.793
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)
27.82
27.73
27.39
26.52
26.41
26.2
22.49
DO (mg/L)
10.49
10.8
10.47
9.58
8.64
6.69
1.37
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU):
 
Blue-Green Dominance (% of cells):
          Carlson TSI: 62
                   
                                                                           
Blue-Greens (#/L):   Greens (#/L):   Diatoms (#/L):   Other Algae (#/L):   Rotifers (#/L):   Zooplankton (#/L):
Blue-Greens (cells/L):   Greens (cells/L):   Diatoms (cells/L):   Other Algae (cells/L):   Rotifers (cells/L):   Zooplankton (cells/L):
 
 

 

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)