Special Events - Union Reservoir - City of Longmont

Special Events – Union Reservoir

The beach at Longmont's Union Reservoir is seen in autumn. with colorful leaves.

Departments » Departments N-Z » Parks, Open Space and Trails » Directory of Parks and Trails » Union Reservoir Nature Area » Activities at Union

 

Union Reservoir is commonly host to triathlons, community festivals, boating events and other group activities. This webpage is intended to provide information on such events at Union coordinated through the City’s Recreation Services department. View the Activities webpage for information on general activities available at Union Reservoir.

Summer 2025 Special Events

Solstice Swim: Sunday, June 22.

Delayed Opening

Union Reservoir will be closed until 1 pm due to Triathlons on Sundays, August 10 and September 21.

Full Moon Paddles

Effective 2023, Union Reservoir will no longer host ‘Full Moon Paddles’, but the full moon will rise regardless!  Bring your boards, kayaks, canoes, and enjoy the magic of the evening glow! Please be advised, all water craft must be off the water 30 minutes before closing time. No change in admission fees or season pass use.

 

 

Winter Weather Alert: Snow and Ice

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