Clean Lakes Program: Crooked - Steuben County

 

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Indiana Clean Lakes Program Lake Report

Crooked

 

Steuben County

1992

         
Sample Location: Deep Hole
Sample Date: 1992-07-21
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
1992
25.9
4.3
55
27
98.56
8.1
7.3
450
335
131
148
0.01
0.125
0.028
0.146
0.663
0.581
0.032
0.953
1.198
1.605
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)
23.8
23.8
23.8
23.4
23.2
23
22.4
19
17.5
14.8
12.5
10.5
9.2
8.1
8
8
7.5
7.5
7.2
7.2
7
7
7
7
DO (mg/L)
8.1
8
8.1
8.3
8.4
8.3
7.3
2.6
0.9
0.2
0.1
0.8
1
0.7
0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 52.6
 
Blue-Green Dominance (% of NU): 6
 
          Carlson TSI: 46
                    Indiana TSI: 19
                                                                           
Blue-Greens (#/L): 442   Greens (#/L): 714   Diatoms (#/L): 3792   Other Algae (#/L): 2347   Rotifers (#/L): 111   Zooplankton (#/L): 0
 
 

1997

         
Sample Location: Deep Hole
Sample Date: 1997-08-18
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
1997
25.9
1.7
49
19
99.2
8.3
7.41
422
335
139.9
159.5
0.01
0.106
0.015
0.13
3.76
0.022
0.022
0.018
1.339
0.8
2
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)
24.1
24
24
23.9
23.9
23.8
22.9
21.9
17
16
15
14.1
12
11
10.1
9.4
9
8.9
8.5
8.1
8.1
8
8
8
DO (mg/L)
8.22
8.35
8.35
8.39
8.31
8.2
8.15
4.8
0.13
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 36.4
 
Blue-Green Dominance (% of NU): 67
 
          Carlson TSI: 46
                    Indiana TSI: 28
                                                                           
Blue-Greens (#/L): 4035   Greens (#/L): 800   Diatoms (#/L): 137   Other Algae (#/L): 1074   Rotifers (#/L): 12   Zooplankton (#/L): 8.5
 
 

2002

         
Sample Location: Deep Hole
Sample Date: 2002-07-30
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
2002
25.9
2.5
69
23
99.5
8.15
7.3
400
185
129
158
0.01
0.171
0.016
0.204
0.3
0.013
0.013
0.018
0.993
0.839
1.908
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)
26.4
26.4
26.4
26.4
26.3
26.1
24.7
20.2
16.2
14.6
13.3
12.6
11.7
10.8
9.4
8.1
7.6
7.4
7.3
7
6.8
6.6
6.5
6.4
6.4
6.4
6.4
DO (mg/L)
8.1
8.1
8
8.1
8
8
6.6
3.1
0.4
0.3
0.3
0.3
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
                                                                           
% Water Column Oxic: 23.4
 
Blue-Green Dominance (% of NU): 20
 
          Carlson TSI: 37
                    Indiana TSI: 18
                                                                           
Blue-Greens (#/L): 2218   Greens (#/L): 216   Diatoms (#/L): 5195   Other Algae (#/L): 3082   Rotifers (#/L): 157   Zooplankton (#/L): 45.5
 
 

2006

         
Sample Location: Site 3
Sample Date: 2006-06-26
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
2006
2.4
1.2
15
1.2
80.2
8
437
123
0.011
0.034
4.28
0.013
0.064
1.02
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
25.7
25.4
25.3
DO (mg/L)
6.9
6.9
6.6
6.3
                                                                           
% Water Column Oxic: 100
 
Blue-Green Dominance (% of NU): 18.6
 
          Carlson TSI: 52
                    Indiana TSI: 15
                                                                           
Blue-Greens (#/L): 674   Greens (#/L): 629   Diatoms (#/L): 135   Other Algae (#/L): 1438   Rotifers (#/L): 449   Zooplankton (#/L): 299.5
 
 

2006

         
Sample Location: Site 2
Sample Date: 2006-06-26
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
2006
25
1.7
28
8.5
113
8.5
7.6
430
313
126
155
0.01
0.01
0.017
0.128
2.28
0.013
0.013
0.036
0.958
1.108
1.701
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)
25.5
25.2
25.1
24.9
23.7
20
17.5
15.8
15.2
14.6
13.8
12.2
10.5
9.1
8.2
7.6
7.4
7.4
7.3
7.3
7.2
7.2
7.2
7.1
7.1
7.1
7.1
DO (mg/L)
9
9.2
9.3
9.3
9.5
10.3
10.1
7.4
3.9
2.6
2.4
2.1
2.4
2.3
1.6
1.3
0
0
0
0
0
0
0
0
0
0
0
                                                                           
% Water Column Oxic: 56
 
Blue-Green Dominance (% of NU): 34.4
 
          Carlson TSI: 45
                    Indiana TSI: 14
                                                                           
Blue-Greens (#/L): 960   Greens (#/L): 101   Diatoms (#/L): 0   Other Algae (#/L): 1516   Rotifers (#/L): 202   Zooplankton (#/L): 13
 
 

2006

         
Sample Location: Site 1
Sample Date: 2006-06-26
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
2006
9.4
1.5
27
8
106
8.5
7.7
437
396
130
156
0.01
0.01
0.017
0.024
1.55
0.013
0.013
0.106
0.531
1.153
1.134
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
25.2
25
24.9
24.8
24.3
20.6
18.8
17.3
16.5
16
DO (mg/L)
8.5
8.7
8.7
8.8
8.8
8.5
4.7
2.7
0.6
0
0
                                                                           
% Water Column Oxic: 77
 
Blue-Green Dominance (% of NU): 43.9
 
          Carlson TSI: 45
                    Indiana TSI: 13
                                                                           
Blue-Greens (#/L): 960   Greens (#/L): 56   Diatoms (#/L): 19   Other Algae (#/L): 1072   Rotifers (#/L): 38   Zooplankton (#/L): 40
 
 

 

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)