Englesby Brook (Lake Champlain Direct Flow) - Aziza Malik, 05/28/14

General Info

Investigator Name(s): 

Roesch Homeroom

Collection Date & Time: 

Wednesday, May 28, 2014 - 10:00am

Present: 

Overcast

School: 

Champlain Elementary

Watershed: 

Winooski Basin

River: 

Englesby Brook (Lake Champlain Direct Flow)

Monitoring Site: 

Englesby Brook

Physical Assessment

Relative Flow Patterns: 

Fast-Shallow

Water Odor: 

Odorless

Water Appearance: 

Clear

Surrounding Development or Land Use: 

Residential

Is there a water treatment plant upstream?: 

No

Do you see any pipes entering into the river?: 

Yes

Appox. Channel Width: 

5.00ft

Avg. Depth: 

2.08ft

Current Velocity: 

0.64ft/sec

River Bottom Composition

Bedrock: 

2%

Boulders: 

2%

Cobble: 

15%

Sand, Silt, Clay: 

80%

Organic Matter (leaves, fallen twigs): 

1%

Algal Growth

Bottom covered by algae: 

0%

Bank Vegetation

Left bank: 

90%

Right bank: 

30%

Riparian Vegetation Zone

Left bank: 

20ft

Right bank: 

50ft

Overhead Canopy

Canopy Cover: 

75%

Turbidity

Trial 1: 

25NTU

Trial 2: 

25NTU

Avg. Turbidity: 

25NTU

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Stonefly Nymph: 

0

Mayfly Nymph: 

0

Caddis Fly Larvae: 

1

Dobsonfly Larvae: 

0

Riffle Beetle: 

0

Water Penny: 

1

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: 

1

Clams/Mussels: 

0

Crayfish: 

0

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: 

1

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: 

15.0

Chemical Assessment

Temperature

Trial 1: 

15°F

Trial 2: 

15°F

Avg. Temp.: 

15°F

pH

Trial 1: 

7.5

Trial 2: 

7.5

Avg. pH: 

7.5

Orthophosphate PO4-3: 

0.03mg/L

Dissolved Oxygen: 

8mg/L