Clean Lakes Program: Oswego - Kosciusko County

 

Go back to the Indiana Clean Lakes Website

Go back to the Indiana Map to select another county

Indiana Clean Lakes Program Lake Report

Oswego

 

Kosciusko County

1994

         
Sample Location: Deep Hole
Sample Date: 1994-08-08
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
1994
8.84
0.9
14
16
100
8.4
7.5
425
400
162.5
222.3
0.01
0.01
0.043
0.077
4.55
0.022
0.022
0.021
1.373
0.245
0.411
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
25.5
25
25
24.5
22.5
18.5
15
11.5
DO (mg/L)
8.3
8.2
8.2
8
7.9
5.9
0.5
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 56.8
 
Blue-Green Dominance (% of NU):
 
          Carlson TSI: 55
                    Indiana TSI: 0
                                                                           
Blue-Greens (#/L): 4030   Greens (#/L): 1725   Diatoms (#/L): 863   Other Algae (#/L): 467   Rotifers (#/L): 965   Zooplankton (#/L):
 
 

1998

         
Sample Location: Deep Hole
Sample Date: 1998-06-30
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
1998
11
2.3
47.51
16
88
8.13
7.39
420
350
161.2
214.7
0.01
0.166
0.032
0.188
0.02
0.158
0.024
0.097
1.387
0.61
1.98
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)
26.1
26.1
26.1
26.1
26
20.5
17.8
13.5
10.9
9
8
7.8
DO (mg/L)
6.95
7
7.05
6.9
6.75
3.7
1.2
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 50
 
Blue-Green Dominance (% of NU): 52
 
          Carlson TSI: 31
                    Indiana TSI: 26
                                                                           
Blue-Greens (#/L): 1745   Greens (#/L): 36   Diatoms (#/L): 1066   Other Algae (#/L): 448   Rotifers (#/L): 48   Zooplankton (#/L): 29.6
 
 

2003

         
Sample Location: Deep Hole
Sample Date: 2003-08-19
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
10.67
1.9
60
19
94.6
8.5
7.5
450.9
364.4
159
233
0.011
0.21
0.02
0.272
2.31
0.013
0.013
0.298
2.277
0.756
3.721
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)
28.6
27.8
27.6
27.4
26.9
26.1
23.2
20
16.7
13.7
11.2
DO (mg/L)
7.8
8.1
7.8
7
6.9
6
0.8
0.3
0.1
0
0
                                                                           
% Water Column Oxic: 37.5
 
Blue-Green Dominance (% of NU): 64
 
          Carlson TSI: 46
                    Indiana TSI: 30
                                                                           
Blue-Greens (#/L): 5196   Greens (#/L): 626   Diatoms (#/L): 1111   Other Algae (#/L): 736   Rotifers (#/L): 438   Zooplankton (#/L): 49.9
 
 

2011

         
Sample Location: Deep Hole
Sample Date: 2011-08-15
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
2011
10.67
1.5
17.9
15.3
102
8.3
7.4
376.7
349.2
148
186
0.01
0.01
0.019
0.048
6.8
0.013
0.013
0.035373
0.0381209
0.99454
1.709449
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)
25.6
25.6
25.5
25.5
25.4
24.8
22.3
16.4
13
10.8
10
9.7
DO (mg/L)
8.3
8.3
8.3
8.4
8.4
7
0.7
0
0
0
0
0
                                                                           
% Water Column Oxic: 37.5
 
Blue-Green Dominance (% of NU): 96.7
 
Blue-Green Dominance (% of cells): 98.5
          Carlson TSI: 50
                   
                                                                           
Blue-Greens (#/L): 34201615   Greens (#/L): 337087   Diatoms (#/L): 177414   Other Algae (#/L): 17741   Rotifers (#/L): 16   Zooplankton (#/L): 49.8
Blue-Greens (cells/L): 34202   Greens (cells/L): 905   Diatoms (cells/L): 177   Other Algae (cells/L): 71   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2015

         
Sample Location: deep hole
Sample Date: 2015-07-28
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
11
1.9
18.54
14.76
8.6
7.1
449
552
174
215
0.01
0.211
0.041
0.2805
3.59
0.092
0.013
0.018
2.078
0.7295
3.129
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)
28.34
27.88
27.58
25.97
23.76
20.29
16.28
12.44
9.89
9.03
8.46
DO (mg/L)
8.4
8.98
8.28
9.08
7.16
3.52
1.74
1.21
0.97
0.87
0.7
                                                                           
% Water Column Oxic: 63.6
 
Blue-Green Dominance (% of NU):
 
Blue-Green Dominance (% of cells):
          Carlson TSI: 57
                   
                                                                           
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)