LaPlatte River - Tier 2 Report - Vasanthi Meyette, 04/11/19

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Physical Parameters Assessment

Investigator Name(s):

Shelburne Community School

Collection Date & Time:

Thursday, April 11, 2019 - 9:00am

School:

Shelburne Community School

Watershed:

Lake Champlain Direct & Grand Isle Basins

River:

LaPlatte River

Monitoring Site:

Macabe

Surrounding Development or Land Use:

Farm

Park

Residential

Forest

Crops

Do you see any pipes entering into the river?:

Is there a water treatment plant upstream?:

Canopy Cover:

26-50%

Water Appearance:

Milky

Cloudy

Green

Tea-colored

Muddy

Foamy

Water Odor:

Odorless

Average Embeddedness:

26-50%

Average Velocity:

1.88m/s

Physical Summary:

one data set measured a water column depth of 5.5 with a NTU of 240 (outlier)

Weather

Present:

Clear/Sunny

Past 48 Hours:

Overcast

Showers

Average Transparency/Turbidity

No Impact: >60 cm - 17cm = 0-50 ntu
Possible Impact: 17 - 8cm = 65-150 ntu
Impacted: 8 - < 6 cm = >150 ntu

Height of Water Column:

58.75cm

Turbidity:

11.00NTU

Chemical Assessment

Average Temperature:

3.00°C

Average pH:

6.10

Average Orthophosphate PO4-3:

0.11mg/L

Average Dissolved Oxygen:

13.00mg/L

Stream Habitat Assessment

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:

Caddis Fly Larvae:

# of Taxa:

PT Group 2 (Moderately Intolerant)

Dragonfly Nymph:

Sowbug:

# of Taxa:

PT Group 3 (Fairly Tolerant)

Black Fly Larvae:

Leech:

# of Taxa:

PT Group 4 (Very Tolerant)

Left-Handed Snail:

Aquatic Worms:

# 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:

24.00