2001 Little Pond
Monitored by: Beatrice Law, Gisela Meyn
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.
Dissolved Oxygen > 5
mg/L, good
Dissolved Oxygen 3-5 mg/L, low oxygen
Dissolved Oxygen < 3 mg/L, incapable of supporting aquatic life
Refer to URI Watershed Watch's Fact Sheet Dissolved
Oxygen and Temperature for more information.