Open Water Data

(MRCL1) Mercer Lake

Hamilton, New Jersey, United States

  • Water Quality Status
    Passed tests Tue, Aug 12, 2025 at 11:06am
  • Air Temperature
    18.2°C / 64.8°F (air) Sun, Dec 4, 2022 at 10:45pm
  • Wind
    3.6 - 10.1km/h N 10° Sun, Dec 4, 2022 at 10:45pm
  • Clear
    Clear Sun, Dec 4, 2022 at 10:45pm
  • Precipitation
    0mm Sun, Dec 4, 2022 at 10:45pm
  • Air Visibility
    16km Sun, Dec 4, 2022 at 10:45pm
  • Humidity
    93% Sun, Dec 4, 2022 at 10:45pm

This lake is located in Mercer County Park and drains into Assunpink Creek. It has an average water temperature of 25.0 degrees Celsius, scoring good, typically with green or brown water and moderate algae. The water here can have a moderate to swift flow and aquatic vegetation can be scarce or present in moderate amounts.

The description above was copied from or heavily based on Swim Guide, with permission.

More Information