ONEKAMA JUNIOR/SENIOR HIGH SCHOOL SCIENCE
Portage Lake Water Analysis Tests
September 5, 1995
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SECCHI DISK: West Basin 13' East Basin 16' Shallow Site 13' (bottom)
CHLOROPHYLL a: West Basin 21.50 East Basin 20.21 Shallow Site 14.62
(ug/l)*
PHOSPHORUS: West Basin .........East Basin ..............Shallow Site
(ug/l) Surface..............9.1 ....................9.3 ..........................10.3
.........30 ft. ................9.6 ....................11.7 .............(10 ft.) 11.3
.........55 ft. ................24.9 ..................13.8
...........Dissolved Oxygen .....Temperature.......Alkalinity
...................West Basin....................East Basin..............Shallow Site
|
D.O. |
Temp. |
Ph |
D.O. |
Temp. |
Ph |
D.O. |
Temp. |
Ph |
|||
|
Surface |
8.6 |
26 |
7.8 |
7.9 |
27 |
7.7 |
7.8 |
27 |
7.5 |
||
|
15 ft. |
7.8 |
25 |
8.0 |
8.2 |
25 |
8.2 |
8.0 |
25 |
7.9 |
||
|
20 ft. |
8.4 |
22 |
8.1 |
8.3 |
26 |
8.3 |
-- |
-- |
-- |
||
|
25 ft. |
7.5 |
26** |
8.2 |
8.0 |
26 |
8.3 |
-- |
-- |
-- |
||
|
30 ft. |
7.9 |
22 |
8.2 |
8.2 |
25 |
8.2 |
-- |
-- |
-- |
||
|
35 ft. |
8.0 |
21 |
8.2 |
7.6 |
23 |
7.9 |
-- |
-- |
-- |
||
|
40 ft. |
8.4 |
22 |
7.6 |
2.0 |
23 |
8.3 |
-- |
-- |
-- |
||
|
45 ft. |
6.5 |
19 |
8.2 |
0.5 |
23 |
8.2 |
-- |
-- |
-- |
||
|
50 ft. |
2.4 |
22 |
8.4 |
0.6 |
21 |
8.2 |
-- |
-- |
-- |
||
|
55 ft. |
2.8 |
19 |
8.4 |
0.8 |
18 |
8.4 |
-- |
-- |
-- |
* parts per billion
** checked twice
-- not taken