What You'll Find at Sawhill Ponds

Sawhill Ponds Open Space sits just north of Boulder and holds a chain of shallow ponds stocked with rainbow trout and brown trout. The water is cold year-round because of snowmelt from the Flatirons, and the ponds are managed specifically for public fishing — no motorboats, no swimming, no wading except where posted. The setting is high desert scrub and cottonwoods, with trails connecting the ponds and views back toward the mountains.

Access is free. The main parking area sits off Longbow Road, and from there you walk to the upper ponds within five to ten minutes. The lower ponds require a longer walk but see fewer anglers. Most of the water is wadeable, though depths vary — some ponds run three to four feet in the center, others stay shallow across. The bottom is mostly silt and clay, so your boots will sink slightly, but the footing is stable.

Key Takeaways

  • Sawhill Ponds holds rainbow and brown trout in a chain of shallow ponds accessible by free parking and short walks from Longbow Road north of Boulder.
  • Colorado Parks and Wildlife stocks the ponds regularly, so fish are present year-round, though winter access depends on snow and ice conditions.
  • You must have a valid Colorado fishing license, and the ponds follow statewide regulations — check the current year's Colorado Parks and Wildlife brochure for possession limits and any special rules.
  • Spring and fall typically produce the most consistent fishing, while summer can be slow during midday heat but improves in early morning and evening.
  • Fly fishing and spin casting both work here; the shallow water and open banks make it easier than many mountain streams, especially for newer anglers.

Seasons and Water Conditions

The ponds are open year-round, but winter access depends on snow and ice. Sawhill sits at roughly 5,400 feet elevation, so heavy snow can close the parking area or make the walk difficult. Call the Boulder County Parks and Open Space office before heading out in December through February if snow is forecast. Spring runoff (April through June) can muddy the water and raise levels slightly, but the ponds still hold fish and are fishable.

Summer (July and August) is the warmest season, and midday fishing is often slow because trout move to deeper water or shade. Early morning and evening are more productive. Fall (September and October) brings cooler water and more active feeding, and the crowds thin after Labor Day. The water clears in autumn, making sight-fishing possible on calm days.

What Gear and Techniques Work Best

Fly fishing is popular here because the shallow water and open banks give you room to cast. Small nymphs (size 14 to 18) and dry flies (Adams, Pale Morning Dun, Elk Hair Caddis) both work depending on the season. Spin anglers do well with small spinners (size 0 to 1), inline spoons, and soft plastics in natural colors. The trout are stocked regularly, so they are not particularly selective, but matching the hatch in fall will improve your odds.

Wading is allowed throughout most of the ponds, though a few sections are posted as no-wading to protect habitat. Wear felt-soled waders or boots with good grip because the silt is slippery. The water is cold even in summer, so neoprene waders are more comfortable than breathable ones. A net is useful but not essential — most fish here are in the 8- to 14-inch range and can be landed by hand if you are careful.

Regulations and Licensing

You must have a valid Colorado Parks and Wildlife fishing license. You can buy a one-day license, a five-day license, or an annual license through the Colorado Parks and Wildlife website or at most sporting goods stores in Boulder. The license covers all public waters in the state, including Sawhill.

Sawhill follows statewide regulations for rainbow and brown trout. Possession limits and size restrictions change year to year, so check the current Colorado Parks and Wildlife brochure before you fish. As of recent years, the limit has been 10 fish per day with no size restriction, but verify this with the current regulations. Catch-and-release is always an option if you want to fish longer without hitting your limit.

How to Get There and Where to Park

From Boulder, take North Broadway north out of town and turn right (east) on Longbow Road. Follow Longbow for about a mile until you see the Sawhill Ponds Open Space sign and parking area on your left. The parking lot holds about 20 cars and is free. From the parking area, a short trail leads to the upper ponds. The lower ponds require a longer walk (roughly 20 to 30 minutes) but are less crowded.

The area is open sunrise to sunset. There are no facilities at the parking area — no restrooms, no water, no shade structures — so bring what you need. The walk is flat and easy, but the terrain is open and exposed, so sun protection is important in summer. In winter, the road to the parking area may close if snow is heavy; call ahead if conditions are uncertain.

Fish Species and What to Expect

Rainbow trout make up the majority of the stock. They are aggressive feeders and take both flies and spinners readily. Brown trout are also present but less common; they tend to be more cautious and feed better in low light. Both species grow slowly in the cool, shallow water, so most fish run 8 to 14 inches. Occasionally you will land a 16- to 18-inch fish, but that is not the norm.

The ponds are stocked by Colorado Parks and Wildlife on a regular schedule to maintain fishing pressure. This means the fish are not wild and have not learned to avoid anglers, so they are more forgiving of poor casting or presentation than fish in a mountain stream. This makes Sawhill a good choice if you are new to fly fishing or want a day where you are likely to catch something.

Nearby Fishing and Lodging

If you want to fish moving water, Boulder Creek runs through town and holds native cutthroat and brown trout, though it is smaller and more technical than Sawhill. The South Platte River is about 45 minutes south near Deckers and offers larger fish and more challenging water. Both require the same Colorado license.

Boulder has hotels, motels, and vacation rentals throughout town, ranging from budget chains to upscale properties. If you are planning a longer trip, consider staying in Boulder and making Sawhill a half-day outing, then exploring other water or hiking in the area. The town also has fly shops where you can pick up local advice and any gear you forgot.

Frequently Asked Questions

Can I fish Sawhill Ponds in winter?

Yes, the ponds are open year-round, but heavy snow can close the parking area or make the walk difficult. Call the Boulder County Parks and Open Space office before heading out if snow is forecast. Ice fishing is not typical here because the ponds are shallow and ice forms unevenly.

Do I need a guide to fish Sawhill?

No. The ponds are easy to access and fish on your own. If you are new to fly fishing or want local advice on what is hatching, several fly shops in Boulder offer guide services, but they are not required.

What time of day is best for fishing?

Early morning and evening are most productive, especially in summer when midday heat pushes trout deeper. Fall and spring offer good fishing throughout the day. Overcast days are often better than bright, sunny days.

Are there fish in the ponds year-round?

Yes. Colorado Parks and Wildlife stocks the ponds regularly, so trout are present in winter, spring, summer, and fall. Winter fishing is possible if you can reach the parking area, though fewer anglers fish in cold weather.

Can I keep fish I catch at Sawhill?

Yes, as long as you stay within the current possession limit set by Colorado Parks and Wildlife. Check the current brochure for the exact number and any size restrictions. Catch-and-release is also allowed if you prefer to fish without keeping anything.