Winooski River - Brian Slopey, 09/23/13

General Info

Investigator Name(s): 

U-32 G E-Coli = 307.6

Collection Date & Time: 

Monday, September 23, 2013 - 10:30am

Present: 

Overcast

School: 

U32 High School

Watershed: 

Winooski Basin

River: 

Winooski River

Monitoring Site: 

Site 1

Latitude: 

44.241425

Longitude: 

-72.533380

Physical Assessment

Embeddedness: 

26-50%

Relative Flow Patterns: 

Fast-Deep

Water Odor: 

Odorless

Water Appearance: 

Green

Cloudy

Surrounding Development or Land Use: 

Farm

Factory

Is there a water treatment plant upstream?: 

Yes

Do you see any pipes entering into the river?: 

No

Appox. Channel Width: 

30.00ft

Avg. Depth: 

2.50ft

Current Velocity: 

2.40ft/sec

River Bottom Composition

Bedrock: 

3%

Boulders: 

50%

Cobble: 

20%

Sand, Silt, Clay: 

20%

Organic Matter (leaves, fallen twigs): 

7%

Algal Growth

Bottom covered by algae: 

15%

Bank Vegetation

Left bank: 

10%

Right bank: 

20%

Riparian Vegetation Zone

Left bank: 

30ft

Right bank: 

2 000ft

Overhead Canopy

Canopy Cover: 

10%

Turbidity

Trial 1: 

40NTU

Trial 2: 

40NTU

Avg. Turbidity: 

40NTU

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Stonefly Nymph: 

3

Mayfly Nymph: 

6

Caddis Fly Larvae: 

8

Dobsonfly Larvae: 

2

Riffle Beetle: 

7

Water Penny: 

0

Right-Handed Snail: 

0

PT Group 2 (Moderately Intolerant)

Enter the number of each observed

Damselfly Nymph: 

0

Dragonfly Nymph: 

2

Sowbug: 

0

Scud: 

0

Cranefly Larvae: 

0

Clams/Mussels: 

0

Crayfish: 

2

PT Group 3 (Fairly Tolerant)

Enter the number of each observed

Midges: 

0

Black Fly Larvae: 

0

Planaria: 

0

Leech: 

0

PT Group 4 (Very Tolerant)

Enter the number of each observed

Left-Handed Snail: 

0

Aquatic Worms: 

0

Blood Midge: 

0

Rat-Tailed Maggot: 

0

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: 

26.0

Chemical Assessment

Temperature

Trial 1: 

52°F

Trial 2: 

52°F

Avg. Temp.: 

52°F

pH

Trial 1: 

7.0

Trial 2: 

7.0

Avg. pH: 

7.0

Orthophosphate PO4-3: 

0.05mg/L

Dissolved Oxygen: 

10mg/L