Lamoille River - Leah Bronner, 09/18/14

General Info

Investigator Name(s): 

PAML 7th Graders

Collection Date & Time: 

Thursday, September 18, 2014 - 9:30am

Present: 

Clear/Sunny

School: 

Peoples Academy

Watershed: 

Lamoille Basin

River: 

Lamoille River

Monitoring Site: 

Tenney Bridge

Latitude: 

44.565358

Longitude: 

-72.566049

Physical Assessment

Relative Flow Patterns: 

Slow-Deep

Water Odor: 

Odorless

Water Appearance: 

Muddy

Is there a water treatment plant upstream?: 

Yes

Do you see any pipes entering into the river?: 

No

Appox. Channel Width: 

15.00ft

Avg. Depth: 

3.50ft

Current Velocity: 

0.00ft/sec

River Bottom Composition

Bedrock: 

1%

Boulders: 

4%

Cobble: 

10%

Sand, Silt, Clay: 

75%

Organic Matter (leaves, fallen twigs): 

10%

Bank Vegetation

Left bank: 

2%

Right bank: 

50%

Overhead Canopy

Canopy Cover: 

20%

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Stonefly Nymph: 

39

Mayfly Nymph: 

29

Caddis Fly Larvae: 

14

Dobsonfly Larvae: 

6

Riffle Beetle: 

7

Water Penny: 

21

Right-Handed Snail: 

0

PT Group 2 (Moderately Intolerant)

Enter the number of each observed

Damselfly Nymph: 

4

Dragonfly Nymph: 

43

Sowbug: 

4

Scud: 

0

Cranefly Larvae: 

8

Clams/Mussels: 

1

Crayfish: 

46

PT Group 3 (Fairly Tolerant)

Enter the number of each observed

Midges: 

2

Black Fly Larvae: 

3

Planaria: 

0

Leech: 

2

PT Group 4 (Very Tolerant)

Enter the number of each observed

Left-Handed Snail: 

1

Aquatic Worms: 

4

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: 

20.0

Other Biological Indicators

Native Mussels

Aquatic Plants

Chemical Assessment

Temperature

Avg. Temp.: 

66°F

pH

Avg. pH: 

8.0

Orthophosphate PO4-3: 

2.00mg/L

Dissolved Oxygen: 

83mg/L