Creek Name: Bear Creek @ Cochran Mill Nature Center
Group
Name: Woodward Academy/training workshops
Chemical
Data:
| Parameter/ Date |
Dissolved
Oxygen (ppm) |
pH | Air
Temperature (C) |
Water
Temperature (C) |
Settleable
Solids (mg/L) |
Nitrate-Nitrogen (ppm) |
Ortho-phosphates (ppm) |
| 09/30/00 | 9.0 | 7.3 | n/a | 18 | n/a | n/a | n/a |
| 11/12/00 | 10.0 | n/a | n/a | n/a | n/a | n/a | n/a |
| 03/07/01 | 11.0 | 7.3 | 14.7 | 9.5 | n/a | n/a | n/a |
| 10/13/01 | 10.0 | 7.5 | n/a | n/a | n/a | n/a | n/a |
| 10/30/01 | 10.0 | 6.7 | 10.0 | 12.0 | n/a | n/a | n/a |
| 12/01/01 | 11.0 | 7.2 | 21.0 | 12.5 | n/a | n/a | n/a |
|
02/16/02
|
n/a
|
7.4
|
19.5
|
11.5
|
n/a
|
n/a
|
n/a
|
|
06/08/02
|
6.0
|
7.0
|
26.0
|
22.0
|
trace
|
0.0
|
0.0
|
Biological
Data:
| Category/ Date |
Group One (pollution sensitive) |
Group Two (somewhat sensitive) |
Group Three (pollution tolerant) |
Water Quality Index Rating |
| 02/12/000 | caddisfly, mayfly, riffle beetle | 0 | black fly, midge fly | 11 fair |
| 04/08/00 | caddisfly, mayfly, riffle beetle | cranefly,
damselfly, scud, sowbug, fish fly |
aquatic worm, midge fly | 21 good |
| 04/28/01 | caddisfly,
mayfly, riffle beetle, stonefly |
cranefly,
damselfly, dragonfly, sowbug |
aquatic worm, blackfly, midge |
23 excellent |