Open Water Data

UPR-5 Big Slackwater Boat Ramp

Williamsport, Maryland, United States

Data Sources
  • Water Quality Status
    Passed tests Thu, Sep 12, 2024 at 8:12pm
  • Air Temperature
    19.4°C / 66.9°F (air) Thu, Apr 24, 2025 at 10:45pm
  • Wind
    10.4 - 21.9km/h SSE 152° Thu, Apr 24, 2025 at 10:45pm
  • Clear
    Clear Thu, Apr 24, 2025 at 10:45pm
  • Precipitation
    0mm Thu, Apr 24, 2025 at 10:45pm
  • Air Visibility
    16km Thu, Apr 24, 2025 at 10:45pm
  • Humidity
    40% Thu, Apr 24, 2025 at 10:45pm

This site is located at the C&O Canal Big Slackwater access off of Dam No. 4 rd. This is the most popular boat ramp in the Upper Potomac River because of the access to the deep water section called Big Slackwater created by Dam No. 4.

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

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