Scores

Watershed: Moderately Disturbed
WQ Standards: Stressed
WQ Standards Details
Stressed – Nutrients
Stressed – Phosphorus
Color Scoring System
Good Conditions
Fair Conditions
Poor Conditions

Insufficient Data


Learn How Lakes Are Scored

Water Quality Data

Plots

  • Trophic condition thresholds are indicated by shading:
Hypereutrophic
Eutrophic
Mesotrophic
Oligotrophic
  • Click on “Daily Mean” or “Annual Mean” to toggle on or off the data layer.
Spring Phosphorus
Trend: Significantly Increasing (p-value = 0.0131)
Summer Phosphorus
Trend: Highly Significantly Increasing (p-value = 1e-04)

Summer Secchi
Trend: Significantly Decreasing (p-value = 0.0198)
Summer Chlorophyll-a
Trend: Stable (p-value = 0.4273)

Lake Information

Info

Town Thetford
Planning Basin Stevens-Wells-Waits-Ompompanoosuc-CT
Surface Area 461.8 acres
Basin To Lake Area Ratio 28
Maximum Depth 50 feet
Elevation 678 feet

Known Invasive Species Infestations

Common Name Scientific Name
Brittle naiad Najas minor
Eurasian watermilfoil Myriophyllum spicatum

Long Term Means

Season Long Term Mean # Years Data
Total Phosphorus (ug/L)
Spring 12.4 17
Summer 16.6 25
Secchi Transparency (m)
Summer 6.1 42
Chlorophyll-a (ug/L)
Summer 5.0 31