By Jennifer Stuckey
Boulder is known for mountains, but the water gets plenty of attention once summer arrives. Reservoirs across the Front Range welcome paddlers, swimmers, and anyone who wants an afternoon on a lake. Each one has its own permits, fees, and seasonal quirks, so a little planning makes the day easier.
I put together what I know so you can pick the right spot for your board, whether you bring your own gear or rent one for the afternoon.
Key Takeaways
- Boulder Reservoir: The City of Boulder requires a small watercraft permit and an invasive species inspection for private boards.
- Rentals: Rocky Mountain Paddleboard rents and teaches at several Front Range lakes.
- Union Reservoir: Longmont charges a daily fee per paddleboard and requires a life jacket and a whistle.
- Closures: Gross Reservoir was closed to on-water recreation for the 2026 season.
Boulder Reservoir
Boulder Reservoir at 5565 N 51st St. is run by the City of Boulder. Daily entry fees apply from April 1 to October 31, and summer gate hours in 2026 ran from 6 a.m. to 8 p.m.
What Paddlers Need to Know
- Permit: Private stand-up boards need a small watercraft permit sold through the city’s online system, and permits can sell out each spring.
- Inspection: Every craft is inspected on entry and exit, and boards must arrive clean, drained, and dry.
- Launch point: Boards may launch only from the south shore.
Entry costs about $12 per person in summer and less in the fall, though pages list different amounts. Confirm current prices and rules with the city before you load the car, since the permit page still listed an earlier season when I checked.
Rentals and Lessons
Rocky Mountain Paddleboard has served as the concessionaire at Boulder Reservoir and also lists Union Reservoir and Standley Lake. Its Boulder Reservoir page showed the site closed for the 2026 season, so check for 2027 plans.
Ways to Get on the Water
- Lessons and yoga: The company lists lessons and SUP yoga.
- Group events: Past events include Full Moon Paddle outings and a June race called the Flatiron Flatout.
- Reservations: Reservations go through FareHarbor, and walk-ups are also noted.
Rental prices were not available on the pages I read. Call the shop at 720-943-1132 for current rates.
Union Reservoir in Longmont
Union Reservoir has summer hours from 6 a.m. to 9 p.m. and is run by the City of Longmont. Water access is closed from December 1 through the end of February.
Fees and Gear Requirements
- Daily fee: Paddleboards cost $5 per day, separate from the vehicle fee.
- Season pass: A watercraft pass costs $35 for Longmont residents and $70 for non-residents.
- Required gear: Each paddler needs a life jacket and a whistle.
A vehicle pass does not cover a paddleboard, and the Colorado State Parks Pass is not accepted. In 2026, the swim beach closed for low water, though the dog swim beach stayed open.
Lagerman Reservoir and Gross Reservoir
Boulder County’s Lagerman Reservoir allows hand-carried boats, including paddleboards and kayaks, with a no-wake speed limit. Swimmers and waders are not permitted, and the west end is closed from April 1 through August 31 for wildlife.
Rules and Closures
- Boat ramp: The ramp was closed because of low water.
- Life jackets: Each person must have one, and young paddlers must wear theirs at all times.
- Gross Reservoir: Denver Water closed on-water recreation for 2026 because of dam construction.
Visit Boulder describes access closures at Gross extending through 2027, which conflicts with Denver Water’s page, so check with Denver Water. Rules at county lakes can change with water levels, so confirm access before you drive out.
Standley Lake, Chatfield, and Lake Estes
Standley Lake in Westminster is open May 1 through September 30, with a $10 daily paddle pass and a spray station before launch. Chatfield State Park allows paddleboarding on the reservoir and gravel ponds, with life jackets required.
Farther Afield
- Standley Lake: Paddle craft must be sprayed at the station, and a life jacket and whistle are required.
- Chatfield: A marina offers boat rentals, and the reservoir closes to boats from December 1 until the ice melts.
- Lake Estes: The marina rents paddleboards, kayaks, and canoes by the hour.
These options add variety for weekends when the nearest reservoir feels crowded, and they make a good change of scenery during the summer. Call ahead for rental rates, seasonal dates, and any rules for hand-launched boards.
FAQs
Where is the best paddleboarding near Boulder?
Boulder Reservoir and Union Reservoir are the most popular choices. Each has its own fees, inspections, and gear rules, so check before you go.
Do I need a permit for my own board?
Boulder Reservoir requires a small watercraft permit and inspection for private boards, and permits often sell out. Union Reservoir charges a daily watercraft fee instead.
Can I paddle Boulder Creek?
Boulder Creek is used for tubing and kayaking, but county officials can close it during high flows. Check current closures before you go and wear a life jacket.
Contact Jennifer Stuckey Today
Contact Jennifer Stuckey today to find a Boulder home close to the lakes, trails, and activities you love.
