How deep is Pactola Reservoir?

Pactola Reservoir ranges from 4.5 to 27 metres deep (15–89 feet). It is a freshwater site rated as intermediate difficulty. Depths vary across the site, so plan your profile to your training and verify conditions locally.

Is Pactola Reservoir a shore dive or a boat dive?

Pactola Reservoir can be dived from shore or by boat. The entry is recorded as a rocky scramble. The entry area is recorded as sheltered from surge. Basic facilities are recorded at or near the site, and cell service is recorded as good. Entry details and parking notes, where known, are listed in the access section of this page.

Can beginners dive Pactola Reservoir?

Pactola Reservoir is rated as intermediate difficulty, which may not suit new divers. Listed depths run from 4.5 to 27 metres (15–89 feet). Access is from shore or by boat, with the entry recorded as a rocky scramble. Consider your experience level, conditions, and local guidance before planning.

When is the best time to dive Pactola Reservoir?

The best time to dive Pactola Reservoir is typically July through September. Conditions vary, so check the latest reports and forecasts on the dive site page before your trip.

What will I see at Pactola Reservoir?

Divers at Pactola Reservoir in United States commonly report sightings of Rainbow trout, Brown trout, Rock bass, Crayfish, and Northern pike. Rainbow trout, Rock bass, and Crayfish are recorded as common sightings, while Brown trout and Northern pike are reported only occasionally. Marine life varies by season and conditions—check the site page for recent diver observations and photos.

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IntermediateBoth

Pactola Reservoir

South Dakota, United StatesDirections

Open Water suggested5–27 m depthBoth entry

Pactola Reservoir at a glance

Pactola Reservoir is an intermediate both dive site in South Dakota, United States with depths of 4.5–27 m (15–89 ft). Typically most favorable Aug · from 3 years of archive data. Divers commonly see Rainbow trout, Brown trout, and Rock bass. Check the latest conditions and entry details before you go.

Wind model · graded 13h ago

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Tap a factor for its source and model point

Site hazards: Altitude diving (~1,400 m), cold thermocline, steep rocky entries, boat and tuber traffic, zebra mussels (decontaminate gear)

Read the full hazards ↓

Dive windows this week

Best: Tue

Fri17:00–19:00

Sat7:00–14:00

Sun7:00–18:00

Mon9:00–11:00

Tue7:00–13:00

Wed7:00–20:00

Thu—

Favorable windowModerate window— no window

First light 5:59 · Sunrise 6:28 · Sunset 19:11

Source: Open-Meteo wind · graded 13h 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: Rainbow trout, Rock bass, Crayfish

Best time: July through September

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.

Jan84% 10 kn
Feb81% 11 kn
Mar82% 11 kn
Apr79% 11 kn
May86% 11 kn
Jun94% 9 kn
Jul98% 9 kn
Aug100% 9 kn
Sep96% 9 kn
Oct90% 10 kn
Nov79% 11 kn
Dec71% 13 kn

August 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

The largest and deepest reservoir in the Black Hills (about 800 acres, up to 150 ft deep), 15 miles west of Rapid City, flooded over the 1950s gold-rush-era town of Pactola. Divers explore remnants of the old town site, a dynamite bunker, railroad bed and CCC-camp structure, with roughly ten recognized dive spots from 15 to 90 ft; common entries are the swim beach at Pactola Point, the dam and the trail below the visitor center. Water is clear for the region (20-25 ft visibility) with a sharp thermocline around 40 ft, and this is a high-altitude dive at roughly 4,600 ft elevation.

boatshorewall

Altitude diving (~1,400 m), cold thermocline, steep rocky entries, boat and tuber traffic, zebra mussels (decontaminate gear)

Reviews

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