Stunning red rock canyon reservoir with multiple beaches and coves popular for swimming, boating, and cliff jumping at designated areas. A Fort Collins summer institution with beautiful sandstone scenery.
Horsetooth Reservoir stretches nearly seven miles through a narrow red sandstone canyon west of Fort Collins in northern Colorado, sitting at around 5,400 feet elevation. Named for a distinctive rock formation visible along the ridge, the reservoir is bounded by dramatic hogback walls that create a striking backdrop unlike any other beach setting on the Front Range. Multiple designated beach areas line the western shoreline, offering experiences ranging from calm family coves to lively spots favored by cliff jumpers and boaters. The shoreline alternates between sandy patches and rocky outcrops, with the sandy sections providing comfortable areas for sunbathing and wading. Water is typically clear and blue-green, with visibility occasionally reduced by late-summer algae conditions. Swimming temperatures reach comfortable levels by June and remain pleasant through late August. Wind funnels reliably along the canyon corridor, which suits windsurfers and sailors while making afternoon conditions choppier for casual swimmers. Cliff jumping at designated spots is a hallmark of the reservoir experience and draws a younger, more active crowd; these zones are clearly marked by official signage, and jumping from unmarked locations is prohibited and subject to fines. Several hiking trails connect the beach areas to the surrounding Horsetooth Mountain Open Space, where additional geological formations and elevated views of the Colorado plains reward those willing to hike beyond the waterline. Managed by Larimer County, the reservoir charges a day-use fee at entry gates. Multiple campgrounds sit near the shoreline, accommodating both tents and RVs. Restrooms and vault toilets are positioned across the park, though amenities vary by beach location. Boat ramps serve both motorized and hand-launched craft. The reservoir is approximately 15 minutes by car from downtown Fort Collins and is not served by public transit. Fishing is popular year-round, with largemouth and smallmouth bass, walleye, wiper, and tiger muskie among the target species.
Amenities
- boat ramps
- kayak rentals
- camping
- restrooms
- hiking trails
- multiple beach areas
Good to know
- Best for
- swimmers, families, fishing, photographers, couples
Highlights
- Seven-mile reservoir set in a dramatic red sandstone canyon with views of the Horsetooth rock formation
- Multiple beach areas ranging from calm family coves to active zones with officially designated cliff jumping
- Reliable canyon winds creating consistent windsurfing and sailing conditions throughout the summer season
- Trail access into Horsetooth Mountain Open Space with panoramic views across the Colorado plains
- Year-round fishing for bass, walleye, wiper, and trophy tiger muskie in Larimer County's largest reservoir
Tips for visiting
- South Bay is the best option for families with young children; Satanka Cove and North Inlet draw a more active crowd
- Arrive before 9 a.m. on summer weekends — parking lots fill quickly and no overflow area exists
- Wind picks up sharply in the afternoon; plan swimming sessions in the morning and bring a windbreaker for later
- Cliff jumping is only legal at officially marked zones; look for green signage and never jump from unmarked locations
- A Larimer County vehicle pass is required; the annual pass covering Carter, Horsetooth, and Boyd lakes offers strong value for frequent visitors
When to visit
June through August for swimming and beach use; May and September for calmer boating and fishing when crowds thin considerably. Morning visits before noon are best for swimming, as afternoon canyon winds create choppy surface conditions.
Frequently asked questions
Is cliff jumping allowed at Horsetooth Reservoir?
Cliff jumping is permitted only at designated zones clearly marked by official signage. Jumping from unauthorized locations is illegal, carries fines, and is dangerous due to submerged rocks and uneven depths.
What type of shoreline does Horsetooth Reservoir have?
The shoreline alternates between sandy beaches and rocky outcrops set within a red sandstone canyon. The main sandy beach areas are concentrated at South Bay and a few other designated spots along the western shore.
Are there camping facilities at Horsetooth Reservoir?
Yes, Larimer County operates several campgrounds around the reservoir accommodating tents and RVs. Sites fill quickly during summer and advance reservations are strongly recommended through the Larimer County parks system.
How far is Horsetooth Reservoir from Fort Collins?
The main entrance is about 15 minutes west of downtown Fort Collins by car. There is no public transit service to the reservoir, making a vehicle necessary for access.
What fish species are found in Horsetooth Reservoir?
Common species include largemouth and smallmouth bass, walleye, wiper, and trophy-sized tiger muskie. The reservoir is a popular tournament fishing destination, especially in spring and fall when fish are most active.