Clean Lakes Program: Pleasant - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Pleasant

  

Steuben County

1989

          
Sample Location: Deep Hole
Sample Date: 1989-07-18
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
1989
7.9
3.3
70
24
117
8.7
7.4
260
240
87.5
123.5
0.01
0.036
0.041
0.111
0.3
0.323
0.252
0.349
0.636
1.294
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
26
25
22.5
17.5
15.2
13
11
10
9
9
DO (mg/L)
9.5
9.5
9.4
9.3
13.8
8
3.5
0.6
0.2
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 9
  
          Carlson TSI: 51
                    Indiana TSI: 12
                                                                           
Blue-Greens (#/L): 289   Greens (#/L): 234   Diatoms (#/L): 488   Other Algae (#/L): 2097   Rotifers (#/L): 106   Zooplankton (#/L): 0
 
 

1992

          
Sample Location: Deep Hole
Sample Date: 1992-08-17
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
7.9
2
21
22
108.42
8.5
7.2
240
290
89.5
170
0.01
0.057
0.035
0.109
0.285
0.3
0.041
2.322
1.037
0.23
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)
23.2
23.1
23
23
23
23
22.3
19
14.8
12.3
10.2
9.3
9
DO (mg/L)
9.1
9.3
9.3
9.4
9.4
9
8.2
3.3
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 48
  
Blue-Green Dominance (% of NU): 98
  
          Carlson TSI: 53
                    Indiana TSI: 30
                                                                           
Blue-Greens (#/L): 15634   Greens (#/L): 28   Diatoms (#/L): 0   Other Algae (#/L): 113   Rotifers (#/L): 117   Zooplankton (#/L): 0
 
 

1997

          
Sample Location: Deep Hole
Sample Date: 1997-08-04
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
7.9
3.2
58
26
119.3
8.6
7.4
211
275
102.6
177
0.01
0.01
0.015
0.04
1.84
0.029
0.029
0.018
0.033
0.6
0.7
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
26.5
26.5
26.5
26.5
26
22.5
18.9
16
13.5
12
10.2
9.1
8.9
8.3
DO (mg/L)
9.5
9.7
9.6
9.6
9.55
9.1
13.2
7.8
0.5
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 57.1
  
Blue-Green Dominance (% of NU): 80
  
          Carlson TSI: 41
                    Indiana TSI: 17
                                                                           
Blue-Greens (#/L): 986   Greens (#/L): 63   Diatoms (#/L): 39   Other Algae (#/L): 125   Rotifers (#/L): 8   Zooplankton (#/L): 6.4
 
 

 

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)