A Denver City Boating Permit is required to launch any vessel. The permit sticker must be affixed to the starboard side in a visible place. Permits are nontransferable, and permit holders are accountable for the actions of boat drivers and passengers.

The permit season is subject to adequate water quality and lake depths. Boating permits can only be purchased at the Boat Ranger's Office during office hours or by appointment. Permits for human-powered vessels can be purchased online.

To purchase a boating permit, the following is required:

• Copy of valid driver’s license or photo ID
• Copy of state boat registration - motorized & sailboats
• Liability insurance ($300,000 minimum) - motorized boats only
• Credit card, cash or check made out to the "Manager of Finance" 
  
  

Refunds will not be issued once a permit is purchased. Payment can be made by credit card (no American Express), cash or check made out to "Manager of Finance".

Denver Parks & Recreation may revoke a permit without a refund for violation of any city rules and regulations, state boating statutes or city ordinances.

Boating Permits may be purchased online for human-powered vessels only. View purchasing instructions (PDF).

Boating permits for motorized vessels and harbor mooring sites will be available for purchase at the Sloan's Lake Boating Office beginning March 30 at 8:00AM.

Sloan's Lake is closed to all public boating for the following permitted events:

• Wednesdays (8:00AM - 1:00PM), June 5 - August 7: DPR Adaptive Recreation water programs
• June 20 & 21: (8:00AM - 1:00PM): DPR Adaptive Recreation water programs
• July 26 - 28 (all day): Annual Boat Festival