Clean Lakes Program: Horseshoe - Noble County

 

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Indiana Clean Lakes Program Lake Report

Horseshoe

  

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
8.5
3.1
20.5
12.5
105.3
8.1
7.2
420
237
203.7
298.2
0.01
0.375
0.044
0.455
0.295
0.302
0.035
2.66
1.4
4.949
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)
25.8
24.9
25
24.4
21.8
16.4
11.5
9
7.8
7
DO (mg/L)
8.9
8.8
8.7
8.5
8
7
0.2
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 63
  
Blue-Green Dominance (% of NU): 89
  
          Carlson TSI: 52
                    Indiana TSI: 33
                                                                           
Blue-Greens (#/L): 20483   Greens (#/L): 686   Diatoms (#/L): 823   Other Algae (#/L): 754   Rotifers (#/L):   Zooplankton (#/L): 161
 
 

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
8.5
2.2
44
14
92
7.9
6.9
418
440
191.5
319.5
0.01
0.01
0.035
0.012
3.87
1.637
0.022
0.018
1.421
1.833
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)
27
26.2
25.5
25
20.5
15.5
11.3
10
9
DO (mg/L)
8
7.9
7.8
8.3
20
6.9
0.6
0.1
0.1
                                                                           
% Water Column Oxic: 65.6
  
Blue-Green Dominance (% of NU): 86
  
          Carlson TSI: 49
                    Indiana TSI: 27
                                                                           
Blue-Greens (#/L): 34666   Greens (#/L): 436   Diatoms (#/L): 1746   Other Algae (#/L): 2681   Rotifers (#/L): 927   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
8.5
1.8
42
12.25
91
8.01
7.29
434.5
363.1
193.8
280.8
0.01
0.408
0.014
0.44
9.04
0.022
0.022
0.018
2.019
0.798
2.879
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)
29.2
27.5
27.3
26.9
21.9
15.9
10.7
8.5
7.3
6.8
DO (mg/L)
7.43
7.75
7.14
5.14
18.63
1.6
0.03
0.02
0
0
                                                                           
% Water Column Oxic: 75
  
Blue-Green Dominance (% of NU): 78
  
          Carlson TSI: 49
                    Indiana TSI: 33
                                                                           
Blue-Greens (#/L): 31500   Greens (#/L): 1748   Diatoms (#/L): 1677   Other Algae (#/L): 5458   Rotifers (#/L): 214   Zooplankton (#/L): 37.4
 
 

 

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)