Winooski River - Chase Rosenberg, 10/31/13

General Info

Investigator Name(s): 

Horizons

Collection Date & Time: 

Thursday, October 31, 2013 - 10:00am

Present: 

Overcast

School: 

Burlington High School

Watershed: 

Winooski Basin

River: 

Winooski River

Monitoring Site: 

Centennial Brook

Latitude: 

44.480000

Longitude: 

-73.210000

Physical Assessment

Relative Flow Patterns: 

Slow-Shallow

Water Appearance: 

Clear

Cloudy

Green

Foamy

Surrounding Development or Land Use: 

Farm

Golf Course

Residential

Appox. Channel Width: 

2.43ft

Avg. Depth: 

0.35ft

Current Velocity: 

0.34ft/sec

Bank Vegetation

Left bank: 

82%

Right bank: 

86%

Biotic Assessment

PT Group 1 (Intolerant)

Enter the number of each observed

Caddis Fly Larvae: 

12

PT Group 4 (Very Tolerant)

Enter the number of each observed

Left-Handed Snail: 

1

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: 

5.0

Chemical Assessment

Temperature

Trial 1: 

46°F

Trial 2: 

50°F

Avg. Temp.: 

48°F

pH

Trial 1: 

6.0

Trial 2: 

7.0

Avg. pH: 

6.5

Orthophosphate PO4-3: 

0.14mg/L

Dissolved Oxygen: 

10mg/L

Past 48 Hours: 

Overcast