WATER QUALITY TEAM

Chair:  Bill Landmesser: 357-3399                Jim Bolthouse: 357-3315       

John Miller:  357-3368            Rich Camarra:  357-3299        Jack Streb:  357-2970

                                   

                                    HIGH             Medium          Low

Clarity Range:           >15.6ft                        6.5-15.6ft        <6.5ft

PH:     7 Neutral

DO:     > 7.0 Good for Trout

 

Water Clarity Quality = low biological productivity (primary algae) and high dissolved oxygen essential for health lakes.

SECCHI Disk Clarity Testing is done weekly (depth is recorded when the disc can no longer be seen.) May-Sept by 6th & 7th Lakes Improvement Association , Inc. volunteers and the results are reported to the Hamilton County Soil/Water Conservation district.

 

 

Water Quality Test Results

 

Sixth Lake

Seventh Lake

Year

PH

(Acidity)

DO

Dissolved Oxygen

(mg/1)

SECCHI

Water

Clarity

PH

(Acidity)

DO

Dissolved Oxygen

(mg/1)

SECCHI

Water

Clarity

1985

6.2

8.9

 

6.2

9.1

 

1986

6.1

7.6

 

6.6

8

 

1987

6.8

8.7

 

6.9

9.2

 

1988

7.4

8.3

 

7.3

7.9

 

1989

6.9

7.8

 

7.3

7.9

 

1990

6.7

9.3

 

6.5

10.7

 

1991

6.9

11.1

 

7

11.9

 

1993

7.1

>8.0

 

7.2

>8.0

 

1994

6.7

>8.0

 

6.6

>8.0

 

1995

5.9

>8.0

18.9 ft

5.7

>8.0

29.9 ft

1996

5.9

>8.0

17.8 ft

5.8

>8.0

19.04 ft

1997

7.1

>8.0

18.0 ft

7.1

>8.0

20.5 ft

1998

7.3

>8.0

18.0 ft

7.3

 

19.3 ft