Best for intermediate divers, boat entry, mild current.
Dayboard 9 Cove is a freshwater dive site located approximately 9 miles south of Ok-A-Beh Marina on Bighorn Lake. The site is defined by steep canyon walls that drop vertically into the water, revealing unique geological strata beneath the surface. Access to this site requires a boat, as it is situated 12,875 metres from the shore. Divers should expect mild currents and cold water temperatures, typically ranging between 4 and 5°C. Due to the cold conditions and the nature of the terrain, this site is suited for intermediate divers. Boat traffic is a known hazard in this area.
45.26517, -108.00285
Contact the visitor center prior to departure to check for current lake levels, fire restrictions, and weather advisories.
Boat-in only. Accessible by motorized boat, kayak, or canoe launched from the Ok-A-Beh Marina, approximately nine miles away.
Expected in this region. No sightings logged here yet.
Skill Level
Intermediate
Entry
Boat
Boat required
Current
Mild
Best Time
May, Jun, Jul, Aug, Sep
No, this site is intended for intermediate divers due to the cold water temperatures and vertical wall topography.
Access is by boat only, as the site is located 12,875 metres from the shore.
Snorkelling is possible with a rating of 3/5, though the very cold water temperatures of 4-5°C make it challenging.
Divers and snorkellers should be aware of boat traffic and the risks associated with very cold water temperatures.
The best months to visit Dayboard 9 Cove in Fort Smith, Montana are May, June, July, August, and September. Conditions outside these months can still be good but are less predictable.
Dayboard 9 Cove in Fort Smith, Montana typically has mild currents that most divers can handle comfortably.
