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Saturday Pond Water Testing Programs

Water Quality Test Results 1984 - 1999

1999

Scott and Mandy Lennox conducted the following tests:

July 30, 1999
Secchi Disc: 6.25 m (new viewfinder representing better than usual results)
Temp @ bottom: 20c
Temp @ top: 26C
Clarity: good
Dissolved Oxygen: 7.6ppm (1m down)

September 4, 1999
Secchi Disc: 6.65 m
Temp @ bottom: 21C
Temp @ top: 24c (little temperature gradient)
Clarity: good
Dissolved Oxygen: 8.5ppm (1m down) 9.0ppm (4m down) 6ppm (bottom)

1996

DEP continued testing. Scott and Beth Lennox met with Linda Bacon of the DEP and gave the following summary:

Temperature readings for 1996 indicate that stratification started in late May and continued through July, then started to break down during August. Transparency readings ranged from 4.1 m to 6.2 m and averaged 5.2 m. The seasonal total phosphorus averages were 9 parts per billion (ppb) for the epilmnion and 10 ppb on the bottom of the lake. The Chlorophyll a average was 2.8 ppb, and the two color readings averages 25 SPU. The two alkalinity readings averaged 5.5 parts per million (ppm).

1995

In 1995, The Department of Environmental Protection (DEP) with assistance from members of the Saturday Pond Watershed Association performed monthly water quality sampling.

Report from the Maine DEP (1.7M PDF file ***large file)

Phosphorous tests: 1995 = 7 ppb (average of 5 tests)

1984-1990

The State of Maine conducted tests during these years:

Surface Area: 69.0 ha. (170.5 a.)
Flushing Rate: 0.99 flushes/yr
Volume: 2094336.0 cu. m.
Direct Drainage Area: 3.38 sq. km. (1.31 sq. mi.)

Secchi Disk Readings
Year Min.Depth (m) Mean Depth (m) Max Depth (m)
1984 3.8 5.0 6.0
1987 5.4 6.4 7.0
1988 4.9 5.6 6.5
1989 4.7 5.5 6.8
1990 4.0 5.0 6.0
Chemical Parameters
Year Mean pH Mean ALK Total Phos, Means (ppb) EPI CORE
1984 13
1987
1988 6.5 4.0
1989 6.5 9
1990 9
Late Summer Temperature and Dissolved Oxygen Profiles
Depth 08/30/84 08/24/87 09/18/87 09/16/88 08/03/89 09/07/89
(meters) degC ppm degC ppm degC ppm degC ppm degC ppm degC ppm
1.0 24.0 8.2 20.8 8.2 18.5 9.0 18.2 9.0 24.5 8.2 19.8 9.2
2.0 23.8 8.2 20.8 8.2 18.5 9.0 18.2 9.0 23.8 8.1 18.5 9.3
3.0 23.8 8.1 20.8 8.2 18.5 8.9 18.0 9.0 23.4 7.9 18.3 9.3
4.0 23.5 8.1 20.8 8.2 18.4 8.9 17.8 9.0 23.0 7.6 18.1 9.2
5.0 23.2 7.6 20.8 8.2 18.2 8.9 17.5 9.0 18.7 4.0 18.0 9.1
6.0 22.8 0.1 20.5 8.2 18.1 8.9 17.3 9.0 14.5 0.2 17.9 8.1