Winooski River - Brian Slopey, 09/25/13

General Info

Investigator Name(s): 

U-32 4 E-- Coli = 96.1

Collection Date & Time: 

Wednesday, September 25, 2013 - 10:30am

Present: 

Clear/Sunny

School: 

U32 High School

Watershed: 

Winooski Basin

River: 

Winooski River

Monitoring Site: 

Site 4

Latitude: 

44.240441

Longitude: 

-72.549688

Physical Assessment

Embeddedness: 

51-75%

Relative Flow Patterns: 

Slow-Deep

Slow-Shallow

Fast-Shallow

Water Odor: 

Odorless

Water Appearance: 

Clear

Surrounding Development or Land Use: 

Farm

Residential

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: 

1.90ft

Current Velocity: 

1.30ft/sec

River Bottom Composition

Bedrock: 

2%

Boulders: 

45%

Cobble: 

20%

Sand, Silt, Clay: 

30%

Organic Matter (leaves, fallen twigs): 

3%

Algal Growth

Bottom covered by algae: 

50%

Bank Vegetation

Left bank: 

20%

Right bank: 

20%

Riparian Vegetation Zone

Left bank: 

30ft

Right bank: 

2 000ft

Overhead Canopy

Canopy Cover: 

10%

Turbidity

Trial 1: 

10NTU

Trial 2: 

10NTU

Avg. Turbidity: 

10NTU

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Stonefly Nymph: 

13

Mayfly Nymph: 

9

Caddis Fly Larvae: 

27

Dobsonfly Larvae: 

6

Riffle Beetle: 

0

Water Penny: 

4

Right-Handed Snail: 

0

PT Group 2 (Moderately Intolerant)

Enter the number of each observed

Damselfly Nymph: 

0

Dragonfly Nymph: 

1

Sowbug: 

0

Scud: 

0

Cranefly Larvae: 

0

Clams/Mussels: 

0

Crayfish: 

5

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: 

60°F

Trial 2: 

60°F

Avg. Temp.: 

60°F

pH

Trial 1: 

7.0

Trial 2: 

7.0

Avg. pH: 

7.0

Orthophosphate PO4-3: 

0.02mg/L

Dissolved Oxygen: 

9mg/L

Past 48 Hours: 

Clear/Sunny