Otter Creek - Rachel Valcour, 09/11/13

General Info

Investigator Name(s):

Barstwo 8th graders

Collection Date & Time:

Wednesday, September 11, 2013 - 8:30am

Present:

Clear/Sunny

School:

Barstow Memorial School

Watershed:

Otter/Lewis Basin

River:

Otter Creek

Monitoring Site:

East Creek

Latitude:

43.701203

Longitude:

-72.953746

Physical Assessment

Embeddedness:

51-75%

Relative Flow Patterns:

Slow-Shallow

Fast-Shallow

Water Odor:

Odorless

Water Appearance:

Clear

Surrounding Development or Land Use:

Residential

Is there a water treatment plant upstream?:

Do you see any pipes entering into the river?:

Appox. Channel Width:

15.28ft

Avg. Depth:

0.66ft

Current Velocity:

1.02ft/sec

River Bottom Composition

Bedrock:

Boulders:

Cobble:

90%

Sand, Silt, Clay:

Organic Matter (leaves, fallen twigs):

Algal Growth

Bottom covered by algae:

15%

Bank Vegetation

Left bank:

10%

Right bank:

Riparian Vegetation Zone

Left bank:

2ft

Right bank:

10ft

Overhead Canopy

Canopy Cover:

100%

Turbidity

Trial 1:

120NTU

Trial 2:

120NTU

Avg. Turbidity:

120NTU

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Stonefly Nymph:

Mayfly Nymph:

Caddis Fly Larvae:

Dobsonfly Larvae:

Riffle Beetle:

Water Penny:

Right-Handed Snail:

PT Group 2 (Moderately Intolerant)

Enter the number of each observed

Damselfly Nymph:

Dragonfly Nymph:

Sowbug:

Scud:

Cranefly Larvae:

Clams/Mussels:

Crayfish:

PT Group 3 (Fairly Tolerant)

Enter the number of each observed

Midges:

Black Fly Larvae:

Planaria:

Leech:

PT Group 4 (Very Tolerant)

Enter the number of each observed

Left-Handed Snail:

Aquatic Worms:

Blood Midge:

Rat-Tailed Maggot:

Pollution Tolerance Index Rating

= 4*(Total # in PT Group 1) + 3*(Total # in PT Group 2) + 2*(Total # in PT Group 3) + 1*(Total # in PT Group 4)

23+ (Excellent)
17-22 (Good)
11-16 (Fair)
10 > (Poor)

PT Index Rating:

23.0

Chemical Assessment

Temperature

Avg. Temp.:

17°F

pH

Avg. pH:

6.3

Orthophosphate PO4-3:

0.05mg/L

Dissolved Oxygen:

10mg/L

Lake Champlain Sea Grant

Otter Creek - Rachel Valcour, 09/11/13

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River Bottom Composition

Algal Growth

Bank Vegetation

Riparian Vegetation Zone

Overhead Canopy

Turbidity

PT Group 1 (Intolerant)

PT Group 2 (Moderately Intolerant)

PT Group 3 (Fairly Tolerant)

PT Group 4 (Very Tolerant)

Pollution Tolerance Index Rating

Temperature

pH