Clean Lakes Program: Yellow Creek - Elkhart County

 

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Indiana Clean Lakes Program Lake Report

Yellow Creek

  

Elkhart County

1995

          
Sample Location: Deep Hole
Sample Date: 1995-07-06
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
1995
6.1
1
13
7
1
7.06
7
390
600
238
246
0.168
0.212
0.305
0.294
45.72
9.403
9.203
0.783
1.035
3.885
3.94
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
22
20
17.5
13
DO (mg/L)
4.5
1.5
0.1
0.1
0.1
                                                                           
% Water Column Oxic: 40
  
Blue-Green Dominance (% of NU): 2
  
          Carlson TSI: 72
                    Indiana TSI: 36
                                                                           
Blue-Greens (#/L): 957   Greens (#/L): 160   Diatoms (#/L): 1435   Other Algae (#/L): 49435   Rotifers (#/L): 160   Zooplankton (#/L): 148.5
 
 

2000

          
Sample Location: Deep Hole
Sample Date: 2000-07-25
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
2000
6.1
0.5
2
3
2.2
7.4
7.2
600
669
232
256
0.051
0.329
0.524
0.511
30.61
0.022
0.998
0.039
2.387
4.026
5.437
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)
25.9
20.9
19.8
17.8
DO (mg/L)
13
2.3
0.2
0.1
                                                                           
% Water Column Oxic: 33
  
Blue-Green Dominance (% of NU): 1
  
          Carlson TSI: 76
                    Indiana TSI: 50
                                                                           
Blue-Greens (#/L): 4157   Greens (#/L): 77209   Diatoms (#/L): 396   Other Algae (#/L): 219552   Rotifers (#/L): 4751   Zooplankton (#/L): 1392.4
 
 

2003

          
Sample Location: Deep Hole
Sample Date: 2003-07-15
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
2003
2.13
0.5
2
3
0.7
7.7
546
201
0.042
0.204
0.013
0.055
2.851
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
23.2
22.4
DO (mg/L)
8.5
3
0.05
                                                                           
% Water Column Oxic: 47
  
Blue-Green Dominance (% of NU): 76
  
          Carlson TSI: 76
                    Indiana TSI: 53
                                                                           
Blue-Greens (#/L): 201223   Greens (#/L): 6479   Diatoms (#/L): 4920   Other Algae (#/L): 45236   Rotifers (#/L): 8399   Zooplankton (#/L): 72.7
 
 

 

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)