Emergency Contacts
  • Lake Emergencies: 911
  • Report Boating Accidents: CT DEP 860-434-8638
  • Call for FirstLight Power’s water level recording 888-417-4837 Menu Item 2, then 2
  • Lake Emergencies: 911
  • Report Boating Accidents: CT DEP 860-434-8638
  • Call for FirstLight Power’s water level recording 888-417-4837 Menu Item 2, then 2

Live data updates will be back as soon as The Friends of the Lake buoy and weather station have been reinstalled.  Happy Spring!

WATER LEVEL DAtA

NA

The Friends of the Lake buoy and weather station provide live updates on the health of Lake Lillinonah every 15 minutes.

Lower chance of debris
Moderate chance of debris
Higher chance of debris

CURRENT LEVEL

0.0

Lake Lillinonah Dock Data

NA

WIND SPEED

NA

Higher wind speed promotes the mixing of the water, and promotes an exchange between the water and the air. Higher winds also help push debris towards the shoreline.

AIR TEMP

NA

Warm air warms the water, which encourages algae growth.

WIND DIRECTION (DEGREES)

NA

0° means the wind is heading towards the North; 90° towards the East; 180° towards the South; 270° towards the West.

BAROMETRIC PRESSURE

NA

Higher pressure is generally associated with clear weather. An average range is 980 to 1050.

RELATIVE HUMIDITY

NA

Relative humidity describes the amount of water vapor in a mixture of air and water vapor.

RAIN (15 MINUTES) (MM)

NA

More rain yields more river flow and increased mixing.

SUNLIGHT (UMOLSM2)

NA

Sunlight encourages algae growth. This reading can range from slightly negative to 1500 on a sunny summer day.

Lake Lillinonah BUOY Data

NA

SURFACE TEMP

NA

Warm water encourages algae growth

BOTTOM TEMP

NA

Cooler water at the bottom of the lake indicates stratification of the lake water.

DO SURFACE

NA

Readings above 6 are healthy for fish; between 5 and six indicate moderate impairment; below 5 indicate severe impairment and mortality.

DO BOTTOM

NA

Dissolved Oxygen readings are generally lower in lake bottoms, due to decomposition of organic matter and lack of air contact.

SP COND

NA

Measures the ability of the water to conduct an electrical current. Specific Conductance is directly related to the concentration of dissolved ions in the water. An average range in Lake Lillinonah is 280-320. Significantly lower values suggest dilution from heavy rain.

PH

NA

Lake acidity, determined by measuring the concentration of Hydrogen Ions. pH in Lake Lillinonah is affected by the composition of bedrock in the watershed as well as the balance between photosynthesis and respiration within the lake.