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Map of Canyon Ferry Reservoir
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IntermediateBoth

Canyon Ferry Reservoir

Montana, United StatesDirections
Open Water suggested3–15 m (10–49 ft) depthBoth entry

Canyon Ferry Reservoir at a glance

Canyon Ferry Reservoir is an intermediate both dive site in Montana, United States with depths of 3–15 m (10–49 ft). Typically most favorable Jan · from 3 years of archive data. Divers commonly see Rainbow trout, Yellow perch, and Crayfish. Check the latest conditions and entry details before you go.

Next window today· 8:00–19:00 · favorable · sunset 18:22

Wind forecast for this hour · 6:00 · run 7 h ago
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Tap a factor for its source and model point

Site hazards: Low visibility; wind-driven chop on the large open reservoir; altitude dive profile; boat traffic.

Read the full hazards ↓

Dive windows this week

Sun8:00–19:00 favorable

11 kn wind (11 kn wind)

Mon9:00–19:00 favorable

5 kn wind (5 kn wind)

Tue9:00–10:00 favorable, 10:00–11:00 moderate, 18:00–19:00 favorable

12 kn wind (12 kn wind)

Wed9:00–19:00 favorable

4 kn wind (4 kn wind)

Thu9:00–19:00 favorable

4 kn wind (4 kn wind)

Fri9:00–19:00 favorable

2 kn wind (2 kn wind)

SatNot in the forecast yet

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wind forecasts. Numbers under each bar are daylight averages.

First light 7:28 · Sunrise 7:59 · Sunset 18:22 · some windows run past sunset

Source: Open-Meteo wind · updated 24 Oct, 23:21 GMT-6

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Canyon Ferry Reservoir

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Rainbow trout, Yellow perch, Crayfish
Best time: Summer for warmest water.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 98% of days have historically been favorable, wind has typically been 9 knots, historically most favorable
  2. February, 92% of days have historically been favorable, wind has typically been 10 knots
  3. March, 90% of days have historically been favorable, wind has typically been 10 knots
  4. April, 89% of days have historically been favorable, wind has typically been 10 knots
  5. May, 87% of days have historically been favorable, wind has typically been 10 knots
  6. June, 90% of days have historically been favorable, wind has typically been 10 knots
  7. July, 96% of days have historically been favorable, wind has typically been 9 knots
  8. August, 95% of days have historically been favorable, wind has typically been 9 knots
  9. September, 94% of days have historically been favorable, wind has typically been 9 knots
  10. October, 91% of days have historically been favorable, wind has typically been 10 knots
  11. November, 89% of days have historically been favorable, wind has typically been 10 knots
  12. December, 85% of days have historically been favorable, wind has typically been 10 knots

January has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Data updated June 2026

Site details

Montana's third-largest body of water, a Missouri River reservoir downstream of the Three Forks confluence, completed in 1954. Three marina concessions (Goose Bay, Kim's, and Yacht Basin) provide services, and local divers use the reservoir for fun dives, though clarity is limited and not ideal for new-diver open-water training. The rocky and silty bottom holds abundant warm-water and cold-water fish.

boatshore

Low visibility; wind-driven chop on the large open reservoir; altitude dive profile; boat traffic.

Reviews

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