Winooski River - Tier 2 Report - Rebakka Dilauro, 09/19/19

Physical Parameters Assessment

Investigator Name(s):

Cosmos 7th and 8th Grade

Collection Date & Time:

Thursday, September 19, 2019 - 1:45pm

School:

Montpelier High School

Watershed:

Winooski Basin

River:

Winooski River

Monitoring Site:

North Branch River at the North Branch Nature Center

Site Description:

Wide river Very little tree cover Shallow Slow moving water Warm water

Surrounding Development or Land Use:

Park

Forest

Do you see any pipes entering into the river?:

Is there a water treatment plant upstream?:

Canopy Cover:

0-25%

Water Appearance:

Clear

Water Odor:

Odorless

Average Embeddedness:

26-50%

Weather

Present:

Clear/Sunny

Past 48 Hours:

Clear/Sunny

Chemical Assessment

Average Temperature:

16.00°C

Average pH:

5.00

Average Orthophosphate PO4-3:

0.10mg/L

Average Dissolved Oxygen:

10.00mg/L

Stream Habitat Assessment

Streambed Composition:

Mixture of gravel and sand (2)

Streambank Stability:

Unstable banks – lots of erosion present (0)

Deepest pool is at least:

Knee deep (1)

Velocity:

Moderately fast – slowly takes objects downstream (1)

Riparian Vegetation:

Mixture of shrubs and grasses (2)

Riparian Vegetative Zone Width:

Buffer zone is between 50 and 100 feet (2)

Streambed Cover

Rock ledges:

Submerged logs, stumps, or tree roots:

Large rocks:

Artificial objects:

Other:

Stream Habitat Quality Score

Calculated by adding all of the points from the above fields.

18-22 (Excellent)
11-17 (Good)
6-10 (Fair)
0-5 (Poor)

Stream Habitat Quality Score for This Report:

Biological Assessment

PT Group 1 (Intolerant)

Stonefly Nymph:

Mayfly Nymph:

# of Taxa:

PT Group 2 (Moderately Intolerant)

Damselfly Nymph:

Dragonfly Nymph:

Crayfish:

# of Taxa:

PT Group 3 (Fairly Tolerant)

# of Taxa:

PT Group 4 (Very Tolerant)

# of Taxa:

Pollution Tolerance Index Rating

Calculated as follows:
4*(# of Taxa in PT Group 1) + 3*(# of Taxa in PT Group 2) + 2*(# of Taxa in PT Group 3) + 1*(# of Taxa in PT Group 4)

23+ (Excellent)
17-22 (Good)
11-16 (Fair)
0-10 (Poor)

PTI Rating for This Report:

17.00