Indian Brook resevoir - Tier 3 Report - 10/05/21

Physical Parameters Assessment

Investigator Name(s):

Julien, Blake, Marina, Brian

Collection Date & Time:

Tuesday, October 5, 2021 - 12:00pm

School:

Colchester High School

Watershed:

Lake Champlain Direct & Grand Isle Basins

River:

Indian Brook resevoir

Canopy Cover:

26-50%

Water Appearance:

Clear

Tea-colored

Average Embeddedness:

26-50%

Physical Summary:

Lot of wildlife in pond, clean at first but started to become milky when we walked through it

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:

55.00cm

Turbidity:

9.00NTU

Chemical Assessment

Introduction:

Materials and Methods:

Results:

Discussion:

Stream Habitat Assessment

Good Habitat: Score of 80 to 60 ----- Fair Habitat: Score of 59 to 40 ----- Poor Habitat: Score of 39 to 0

Substrate Habitat Types (Score):

40 to 70% has mix of stable habitat types (6)

Embeddedness:

25 to 50% embedded; rocks more difficult to move (6)

Sediment Deposition:

30 to 50% of riverbed effected by new deposition (4)

Velocity / Depth Types (Score):

2 velocity/depth types present (4)

Channel Flow Status:

Water fills > 75% of channel; < 25% of substrate exposed (6)

Channel Alteration:

Some alteration present; usually near bridges (3)

Frequency of Riffles:

Generally all flat water or shallow riffles (1)

Bank Stability (Left Bank):

Stable; < 5% eroded or collapsed (4)

Bank Stability (Right Bank):

Stable; < 5% eroded or collapsed (4)

Riparian Vegetation (Left Bank):

50 to 70% covered by natural vegetation (2)

Riparian Vegetation (Right Bank):

50 to 70% covered by natural vegetation (2)

Riparian Zone Width (Left Bank):

Width 6 to 12 meters; much human impact (2)

Riparian Zone Width (Right Bank):

Width 6 to 12 meters; much human impact (2)

Stream Habitat Quality Score

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

60-80 (Good)
40-59 (Fair)
0-39 (Poor)

Stream Habitat Quality Score for This Report:

Biological Assessment

The Water Quality Score is calculated by adding together the the Index Values calculated for each Sensitivity Group on the field sheet.

40+ (Excellent)
30-39 (Good)
20-29 (Fair)
0-19 (Poor)

Group I (Sensitive) Index Value:

5.0

Group II (Moderately Sensitive) Index Value:

12.0

Group III (Tolerant) Index Value:

0.0

Water Quality Score for This Report: