Clean Lakes Program: Gilbert - Noble County

 

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Indiana Clean Lakes Program Lake Report

Gilbert

 

Noble County

1991

         
Sample Location: Deep Hole
Sample Date: 1991-08-05
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
1991
11
3.5
25
22
107.7
8.3
7.4
340
365
142.8
338.1
0.01
0.01
0.034
0.088
0.254
0.293
0.057
1.264
1.078
3.28
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
25
25
25
25
23
19.5
16
14
12
11
DO (mg/L)
8.9
8.9
8.9
8.85
8.7
8.7
6.3
4.55
2.4
0.2
0.1
                                                                           
% Water Column Oxic: 82
 
Blue-Green Dominance (% of NU): 48
 
          Carlson TSI: 49
                    Indiana TSI: 13
                                                                           
Blue-Greens (#/L): 750   Greens (#/L): 230   Diatoms (#/L): 0   Other Algae (#/L): 519   Rotifers (#/L):   Zooplankton (#/L): 59
 
 

1993

         
Sample Location: Deep Hole
Sample Date: 1993-08-24
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
11
5.3
70
23
95
8.4
7.3
380
425
142
255.5
0.01
0.012
0.01
0.033
1.87
0.022
0.022
0.018
1.69
0.41
0.43
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)
26.5
26.1
26
24.1
24.1
23
20.5
14.8
12.6
10.1
9
8.9
DO (mg/L)
7.8
7.95
7.95
7.7
7.6
5.5
5.7
2.2
0.2
0
0
                                                                           
% Water Column Oxic: 72.7
 
Blue-Green Dominance (% of NU): 53
 
          Carlson TSI: 37
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 2015   Greens (#/L): 76   Diatoms (#/L): 171   Other Algae (#/L): 1083   Rotifers (#/L): 480   Zooplankton (#/L): 0
 
 

1998

         
Sample Location: Deep Hole
Sample Date: 1998-07-20
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
1998
11
3.7
82
28
110
8.35
7.3
370
390
132.5
238.9
0.01
0.01
0.01
0.057
2.51
0.022
0.022
0.018
1.069
0.513
1.821
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
27.9
27.7
27.7
27.4
25.3
19.8
15.6
12.7
10.8
9.8
DO (mg/L)
8.41
8.51
8.65
8.54
7.8
12.94
13.92
9.4
3.09
1.65
0.02
                                                                           
% Water Column Oxic: 88.9
 
Blue-Green Dominance (% of NU): 24
 
          Carlson TSI: 39
                    Indiana TSI: 5
                                                                           
Blue-Greens (#/L): 162   Greens (#/L): 81   Diatoms (#/L): 67   Other Algae (#/L): 310   Rotifers (#/L): 47   Zooplankton (#/L): 7.8
 
 

2003

         
Sample Location: Deep Hole
Sample Date: 2003-08-11
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
2003
9.44
4.8
85
25
109.5
8.5
7.5
378.6
360.9
134
206
0.01
0.01
0.01
0.013
1.65
0.013
0.013
0.044
0.582
0.729
1.545
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)
26.9
26.9
26.8
26.8
26.3
25.4
21.6
17.1
14
11.5
9.8
DO (mg/L)
7.9
7.9
7.7
7.4
8
6.3
7
1.6
0.8
1.3
0.1
                                                                           
% Water Column Oxic: 53.2
 
Blue-Green Dominance (% of NU): 34
 
          Carlson TSI: 36
                    Indiana TSI: 7
                                                                           
Blue-Greens (#/L): 2495   Greens (#/L): 9   Diatoms (#/L): 1655   Other Algae (#/L): 2951   Rotifers (#/L): 143   Zooplankton (#/L): 59.6
 
 

 

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)