Scores

Watershed: Moderately Disturbed
WQ Standards: Meets Standards
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: Stable (p-value = 0.8046)
Summer Phosphorus
Trend: Insufficient Data

Summer Secchi
Trend: Insufficient Data
Summer Chlorophyll-a
Trend: Insufficient Data

Lake Information

Info

Town Derby
Planning Basin Lake Memphremagog
Surface Area 186 acres
Basin To Lake Area Ratio 480
Maximum Depth 20 feet
Elevation 878 feet

Known Invasive Species Infestations

Common Name Scientific Name
Eurasian watermilfoil Myriophyllum spicatum

Long Term Means

Season Long Term Mean # Years Data
Total Phosphorus (ug/L)
Spring 14.4 8
Summer No Data NA
Secchi Transparency (m)
Summer No Data NA
Chlorophyll-a (ug/L)
Summer No Data NA