Scores

Watershed: Highly Disturbed
WQ Standards: Impaired
WQ Standards Details
Impaired – Phosphorus
Altered – Flow alteration
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 = 1)
Summer Phosphorus
Trend: Stable (p-value = 0.4548)

Summer Secchi
Trend: Significantly Decreasing (p-value = 0.0257)
Summer Chlorophyll-a
Trend: Stable (p-value = 0.9834)

Lake Information

Info

Town Newport Town
Planning Basin Lake Memphremagog
Surface Area 5929.3 acres
Basin To Lake Area Ratio 70
Maximum Depth 351 feet
Elevation 682 feet

Known Invasive Species Infestations

Common Name Scientific Name
Curly-leaf pondweed Pogamogeton crispus
Eurasian watermilfoil Myriophyllum spicatum
Starry stonewort Nitellopsis obtusa
Zebra mussel Dreissena polymorpha

Long Term Means

Season Long Term Mean # Years Data
Total Phosphorus (ug/L)
Spring 18.2 12
Summer 19.4 30
Secchi Transparency (m)
Summer 3.6 28
Chlorophyll-a (ug/L)
Summer 4.9 30