Natural swimming hole
Horsetooth Reservoir (South Bay)
Lake · Colorado
About this swimming hole
Horsetooth's designated swim beaches at South Bay and Sunrise Beach are Fort Collins' summer headquarters, with mountain views. Swimming is limited to designated areas; cliff diving is prohibited. Sudden wind gusts are common.
Good to know
| Water type | Lake |
|---|---|
| Water temperature | 75 |
| Depth | designated swim beaches |
| Best season | June-September |
| Fees | Larimer County park entry ($10/vehicle) |
| Reservations required | No |
| Hours | sunrise-sunset |
| Parking | Large lots; fills weekends |
| Amenities | restrooms, picnic tables |
| County | Larimer County |
| Nearest town | Fort Collins |
| Safety notes | No lifeguard confirmed; swim at own risk; cliff diving prohibited; sudden wind |
Map
Nearby swimming holes
Frequently asked questions
Can you swim in Horsetooth Reservoir (South Bay)?
Yes — Horsetooth Reservoir (South Bay) is listed as a natural swimming spot in Colorado. Reported water temperature: 75. Heads-up: No lifeguard confirmed; swim at own risk; cliff diving prohibited; sudden wind. There are rarely lifeguards at natural swimming holes — verify conditions locally before you go.
Does Horsetooth Reservoir (South Bay) require reservations?
No reservations are required at Horsetooth Reservoir (South Bay) based on current information — but verify before you go.
Is there a fee to visit Horsetooth Reservoir (South Bay)?
Reported fee info: Larimer County park entry ($10/vehicle). Fees can change — confirm with the official link.
When is the best time to visit Horsetooth Reservoir (South Bay)?
The best season is typically June-September.