Streamkeepers Handbook and Modules Module 4 Get 2002 Data!!!! |
Stream Name/Nearest Town: Gravel Creek/Horsefly | Date: August 30, 2001 | Watershed Code: |
Organization Name:The Pacific Streamkeepers Federation | Steam Segment # |
Stream Section # | |
Contact Person: Zo Ann Morten | Phone # 604-986-5059 |
Sampler used, mesh size, total area sampled: serber, 363 microns, .092 metres | # of 30cm x 30cm samples: 1 |
20m upstream of culvert under highway from 150 Mile House to Horsefly.
Time: 12:00 pm | Weather: | clear |
Turbidity: greater than depth | Temperature: | Air: 14.50 Water: 140 |
COLUMN A | COLUMN B | COLUMN C | COLUMN D |
Pollution Tolerance | Number Counted | Number of Taxa | Common Name |
CATEGORY 1 (pollution intolerant) |
58 | 5 | Caddisfly Larva (EPT) |
0 | 0 | Dobsonfly (hellgrammite) | |
0 | 0 | Gilled Snail | |
303 | 7 | Mayfly Nymph (EPT) | |
4 | 2 | Riffle Beetle | |
8 | 2 | Stonefly Nymph (EPT) | |
0 | 0 | Water Penny | |
Subtotal | 373 | 16 | Subtotal |
CATEGORY 2 (somewhat tolerant of pollution) |
0 | 0 | Alderfly Larve |
0 | 0 | Aquatic Beetle | |
0 | 0 | Aquatic Sowbug | |
0 | 0 | Clam, Mussel | |
1 | 1 | Cranefly Larva | |
0 | 0 | Crayfish | |
0 | 0 | Damselfly Larva | |
0 | 0 | Dragonfly Larva | |
0 | 0 | Fishfly Larva | |
0 | 0 | Scud | |
0 | 0 | Watersnipe Larva | |
Subtotal | 1 | 1 | Subtotal |
CATEGORY 3 (pollution tolerant) |
0 | 0 | Aquatic Worm |
15 | 1 | Blackfly Larva | |
0 | 0 | Leech | |
3 | 1 | Midge Larva (chironomid) | |
1 | 1 | Planarian | |
0 | 0 | Pouch and Pond Snails | |
0 | 0 | True Bug Adult | |
0 | 0 | Water Mite | |
Subtotal | 19 | 3 | Subtotal |
TOTAL | 393 | 20 | TOTAL |
Abundance: 393 |
Density: 4366.66 |
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Pollution Tolerance Index: 17 (acceptable) | ||||||||||||
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EPT Index: 14 (good) | ||||||||||||
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EPT to Total Ratio: .93 (good) |
Total Number of Taxa: 20 |
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Predominant Taxon Ratio: .77 (marginal) |
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General Comments - Unknown Bugs Most of the caddis had rock homes, stuck to the rocks. Creek runs through forested area near road. Stonefly casings found nearby. |