Clean Lakes Program: Larwill - Whitley County

 

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Indiana Clean Lakes Program Lake Report

Larwill

 

Whitley County

1994

         
Sample Location: Deep Hole
Sample Date: 1994-07-26
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
1994
11.9
1.6
43
8.5
78
7.9
7.3
365
335
142.7
212
0.01
0.276
0.01
0.28
13.15
0.022
0.022
0.018
1.939
0.591
2.338
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
27.5
27.5
27.5
25.5
21.5
17.5
15.5
12.5
11
9.5
9.5
9.5
DO (mg/L)
7.1
7.1
6.6
5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 22
 
Blue-Green Dominance (% of NU): 91
 
          Carlson TSI: 49
                    Indiana TSI: 46
                                                                           
Blue-Greens (#/L): 170722   Greens (#/L): 2743   Diatoms (#/L): 6171   Other Algae (#/L): 5714   Rotifers (#/L): 0   Zooplankton (#/L): 1922
 
 

1998

         
Sample Location: Deep Hole
Sample Date: 1998-07-21
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
1998
11.9
1.6
42
12
141
8.63
7.3
416.3
302.4
141.8
205.9
0.01
0.272
0.352
0.041
9.74
0.797
0.022
0.018
2.224
0.824
3.029
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
27.2
24.6
19.9
12.5
9.4
8.1
7.3
7
6.7
DO (mg/L)
10.87
10.73
11.02
10.89
10.68
1.41
0.01
0
0
0
0
0
                                                                           
% Water Column Oxic: 40
 
Blue-Green Dominance (% of NU): 92
 
          Carlson TSI: 65
                    Indiana TSI: 38
                                                                           
Blue-Greens (#/L): 38756   Greens (#/L): 30   Diatoms (#/L): 515   Other Algae (#/L): 2485   Rotifers (#/L): 364   Zooplankton (#/L): 134.5
 
 

2004

         
Sample Location: Deep Hole
Sample Date: 2004-07-01
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
2004
10.7
0.9
26
11.5
166.4
8.4
7.6
413.5
350.8
155
211
0.023
0.104
0.082
0.191
18.31
2.106
0.154
0.282
2.438
1.573
3.216
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)
28.8
24.7
23.9
23
21.4
18.7
15.2
12
9.7
7.6
DO (mg/L)
12.1
14.2
13.9
12
1.9
0
0
0
0
0
                                                                           
% Water Column Oxic: 38
 
Blue-Green Dominance (% of NU): 68.7
 
          Carlson TSI: 63
                    Indiana TSI: 47
                                                                           
Blue-Greens (#/L): 18860   Greens (#/L): 0   Diatoms (#/L): 3973   Other Algae (#/L): 3317   Rotifers (#/L): 1157   Zooplankton (#/L): 128.1
 
 

2010

         
Sample Location: Deep Hole
Sample Date: 2010-08-10
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
9.5
0.6
6.1
6.9
103.7
8.5
7.3
389
339
175
237
0.01
0.25
0.021
0.298
32.84
0.013
0.013
0.02
1.906
1.124
3.347
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
27.9
26.9
26.5
25.8
19.3
12.7
8.5
6.9
6.4
6
DO (mg/L)
11.6
11
8.4
4.8
1.4
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 32
 
Blue-Green Dominance (% of NU): 99.7
 
Blue-Green Dominance (% of cells): 95.9
          Carlson TSI: 60
                    Indiana TSI: 60
                                                                           
Blue-Greens (#/L): 11872090   Greens (#/L): 149230   Diatoms (#/L): 364785   Other Algae (#/L): 0   Rotifers (#/L): 0   Zooplankton (#/L): 8.6
Blue-Greens (cells/L): 155410   Greens (cells/L): 166   Diatoms (cells/L): 365   Other Algae (cells/L): 0   Rotifers (cells/L): 0   Zooplankton (cells/L): 0
 
 

2015

         
Sample Location: Deep hole
Sample Date: 2015-07-07
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
2015
11.2
0.9
3.99
4.264
8.3
7.1
427
637
169
251
0.01
1.015
0.169
1.069
96.84
2.814
0.021
0.06
3.924
1.909
5.273
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)
24.73
24.8
19.78
18.41
13.34
9.03
6.68
5.71
5.08
4.8
4.82
DO (mg/L)
13.84
14.45
6.76
0.86
0.39
0.25
0.25
0.28
0.25
0.26
0.23
                                                                           
% Water Column Oxic: 17.86
 
Blue-Green Dominance (% of NU):
 
Blue-Green Dominance (% of cells):
          Carlson TSI: 78
                   
                                                                           
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)