2001 Valley Falls Pond

Monitored by: Mike LaMontagne

Water Clarity as Measured by Secchi Depth
Oligotrophic > 4 meters (> 13.1 feet), excellent water clarity
Mesotrophic 2-4 meters (6.6-13.1 feet), moderate water clarity
Eutrophic < 2 meters (< 6.6 feet), low water clarity
Refer to URI Watershed Watch's Fact Sheet Measuring Water Clarity for more information.

Algae Concentration as Measured by Chlorophyll Levels
Oligotrophic < 2.6 ppb, low algae levels
Mesotrophic 2.6-7.2 ppb, moderate algae levels
Eutrophic > 7.2 ppb, elevated algae levels; indicates an alae bloom
Hypereutrophic > 35 ppb, extremely high algae levels; "pea soup" conditions
Refer to URI Watershed Watch's Fact Sheet Algae in Aquatic Ecosystems for more information.

Refer to URI Watershed Watch's Fact Sheet Dissolved Oxygen and Temperature for more information.

Back to URI Watershed Watch Main Data Page