Parameter

5/16/01

6/13/01

7/18/01

Mean of Three Sampling Events 2001

Mean of Three Sampling Events 2000

Lake Depth at Sampling Location (m)

6.4

5.8

5.8

Depth of Thermocline (m)

5.0

--

4.4

Secchi Disc Depth (m)

6.0

3.0

1.9

3.6

1.1

Chlorophyll (mg/l)

--

6

14

10

22

NH₃+NH₄⁺-N (mg/l)

431

204

215

283

399

NH₃-N (un-ionized) (mg/l)

13

17

20

17

51

NO₃+NO₂-N (mg/l)

0.64

0.80

0.13

0.53

0.21

Total Nitrogen (mg/l as N)

1.40

1.03

0.98

1.14

1.14

Total Phosphorus (mg/l as P)

66

67

45

59

159

PO₄-P (mg/l)

43

39

28

36

--

SiO₂-Si (mg/l)

12

4

6

7

18

pH

8.0

8.4

8.2

8.2

8.4

Alkalinity (mg/l)

82

174

167

141

205

Total Suspended Solids (mg/l)

2.9

4.3

4.5

3.9

8.7

Inorganic Suspended Solids (mg/l)

1.4

2.7

1.1

1.7

4.6

Volatile Suspended Solids (mg/l)

1.5

1.6

3.4

2.2

4.2

Analyte

Concentration (mg/l)

Nitrogen Containing Herbicides:

Atrazine

0.10

Cyanazine

<0.1

Metolachlor

<0.1

Alachlor

<0.1

Metribuzin

<0.1

Butylate

<0.1

Trifluralin

<0.1

Acetochlor

0.1

Desethyl Atrazine

<0.1

Desisopropyl Atrazine

<0.1