Indiana Clean Lakes Program Lake Report |
Graybrook |
Owen County |
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1990 |
Sample Location: Deep Hole |
Sample Date: 1990-07-23 |
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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 |
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1990 |
21 |
1.6 |
21 |
9.5
|
90 |
8 |
7.1 |
110 |
150 |
35.9 |
75.4 |
0.01 |
0.01 |
0.032 |
0.064 |
0.08 |
0.401 |
0.018 |
1.535 |
1.457 |
2.621 |
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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 |
23.5 |
21 |
18 |
13 |
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DO (mg/L) |
8.1 |
7 |
0.3 |
0.2 |
0.1 |
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% Water Column Oxic: 80 |
Blue-Green Dominance (% of NU): 60 |
Carlson TSI: 54 | |||||||||||||||||||||||||||||||||||
| Indiana TSI: 25 | |||||||||||||||||||||||||||||||||||||
| Blue-Greens (#/L): 9818 | Greens (#/L): 1730 | Diatoms (#/L): 366 | Other Algae (#/L): 4225 | Rotifers (#/L): 166 | Zooplankton (#/L): 0 | ||||||||||||||||||||||||||||||||
| 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) | ||