Skip to content
Map of Alcova Reservoir
Add the first photo
IntermediateBoth

Alcova Reservoir

Wyoming, United StatesDirections
Open Water suggested3–31 m depthBoth entry

Alcova Reservoir at a glance

Alcova Reservoir is an intermediate both dive site in Wyoming, United States with depths of 3–30.5 m (10–100 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see Crayfish, Rainbow trout, and Walleye. Check the latest conditions and entry details before you go.

Wind model · graded 1h ago
—

Tap a factor for its source and model point

Site hazards: High-altitude dive profile; wind exposure on the open reservoir; boat traffic; past diver fatality reported.

Read the full hazards ↓

Dive windows this week

Best: Sun
Fri19:00–20:00
Sat7:00–13:00
Sun7:00–13:00
Mon19:00–20:00
Tue7:00–15:00
Wed7:00–8:00
Thu7:00–20:00

Favorable windowModerate window— no window

First light 6:14 · Sunrise 6:43 · Sunset 19:23

Source: Open-Meteo wind · graded 1h ago

Forecast only — always assess conditions on site.

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: Crayfish, Rainbow trout, Walleye
Best time: June through August.

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. Jan53% 15 kn
  2. Feb24% 19 kn
  3. Mar34% 17 kn
  4. Apr50% 15 kn
  5. May53% 14 kn
  6. Jun41% 15 kn
  7. Jul53% 14 kn
  8. Aug47% 14 kn
  9. Sep64% 13 kn
  10. Oct53% 13 kn
  11. Nov37% 16 kn
  12. Dec35% 16 kn

September hastypically 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

Fills & rentals nearby

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

Data updated June 2026

Site details

A roughly 2,470-acre reservoir about 30 minutes southwest of Casper on Highway 220, around 100 feet deep, and the most accessible regularly dived site in central Wyoming. The dam area and Sandy Beach generally have the best visibility from June through August. The rocky bottom is stocked with trout, walleye and perch, and freshwater crawfish are common. Best accessed by boat, though some shore entries require only a short walk with gear.

boatshore

High-altitude dive profile; wind exposure on the open reservoir; boat traffic; past diver fatality reported.

Reviews

No reviews yet — this site is waiting for its first. Dived here? Your rating and a few lines help the next diver.

Spot something off?

Help keep this listing accurate for the next diver.