Facility Hours

Hours are subject to change. Hours below are 7 days/week. See the Special Event Schedule PDF for scheduled closures due to events. Swimming hours and information

Reservoir Hours 2024

Off the
January10 a.m. - 3 p.m.3 p.m.4 p.m.CLOSEDCLOSED
New Year's DayCLOSED
February10 a.m. - 3 p.m.3 p.m.4 p.m.CLOSEDCLOSED
March10 a.m. - 4 p.m.4 p.m.5 p.m.CLOSEDCLOSED
April9 a.m. - 5 p.m.5 p.m.6 p.m.CLOSEDCLOSED
May 1-239 a.m. - 5 p.m.5 p.m.6 p.m.CLOSEDRental info + reservations
May 24 - Aug. 166 a.m. - 8 p.m.8 p.m.9 p.m.10 a.m. - 6 p.m.Rental info + reservations
Aug. 19 - Sept. 26 a.m. - 8 p.m.8 p.m.9 p.m.Swim HoursRental info + reservations
Sept. 3 - 309 a.m. - 6 p.m.6 p.m.7 p.m.CLOSEDRental info + reservations
October9 a.m. - 6 p.m.6 p.m.7 p.m.CLOSEDCLOSED
November10 a.m. - 3 p.m.3 p.m.4 p.m.CLOSEDCLOSED
Thanksgiving DayCLOSED
December10 a.m. - 3 p.m.3 p.m.4 p.m.CLOSEDCLOSED
Christmas EveCLOSED
Christmas DayCLOSED
New Year's EveCLOSED

Entry Fees

Daily Access Fees for April 1 - May 23 and Sept. 3 - Oct. 31*


*There is no access fee from November 1 to March 31.

Daily Access Fees for May 24 - Sept. 2
Twilight Entry: 6 p.m. - close. $5 individual/$10 carload

AgesDaily entry FeeResident/Worker* rate
Sustainability Discount**25% off25% off

Reservoir Only Annual Pass (Jan. 1 to Dec. 31)

If you purchase the Reservoir Only Pass along with your boat permit renewal, you’ll receive the following number of visitor vouchers:

  • Small craft permit + Reservoir-only pass: 3 entry vouchers
  • Large craft permit + Reservoir-only Pass: 5 entry vouchers

This promotion is valid through February 28, 2024.

Agespass FeeResident/Worker* rate

*Resident/Worker Fees
Rate reflects a discount rate for those who either live, or are paid employees of businesses or organizations, within the city limits of Boulder. If you need help determining your fee status speak with our team members at the front gate. Adult proof of residence/worker status required.

**Sustainability Discount: (for pedestrians, cyclists, and cars with 3 or more.)
25% off each high season regular price entry fee.

Any adults, seniors or youth residing at the same address. Anyone 19 years old and over must provide proof of same address residence (sorry, no exceptions).The package must include at least 1 members aged 19 or older. The package may not include more than 8 members aged 19 or older.

Rain Check/Refund Policy: No rain checks will be issued unless a facility is closed due to weather for two or more consecutive hours. No rain checks will be issued after 5 p.m. We do NOT offer refunds for any reason.

Daily entry fees will be charged April 1 through Oct. 31, 2024. Each person entering the park must pay the entrance fee. Fees are collected for each person entering Boulder Reservoir including runners, walkers and cyclists.