Skip to content

Phycocyanin in Candlewood Lake

Lake phycocyanin levels after period of rain (above) and after dry period (below):

Phycocyanins are found in Cyanobacteria (previously called blue-green algae).

Notice: Each pixel is 30 square meters (roughly 100ft x 100ft).


  • Candlewood Lake as sparse phycocyanin levels in the main body after a large rain event.
  • Phycocyanin levels are low at the borders and higher in the center of Candlewood Lake.
  • Phycocyanin levels are low for the Housatonic River feeding Lake Lillinonah following a high flow wet period.


  • Candlewood Lake has elevated Phycocyanin levels after a prolonged period of no rain.
  • With no storm waters in a dry period, water infiltration to Candlewood Lake is dominated by septic effluent.
  • Lake Lillinonah as low levels of phycocyanin (blue-green algae) in the dry period, problably because it has stream flow, unlike Candlewood Lake that has only septic flow entering the lake.

3-Dimensions Disclosed by Satellite Flyover Data Capture:

Lake Pollution Study

1) Nutrient Phosphorus.

2) Chlorophyll a (indicates blue-green algae levels)

3) Phycocyanin (indicates photosynthesis activity) (This page)

[To download for printing: right-click (Windows); control-click (Mac)]