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Map of Wreck Alley - Sentinel Island (Lake Mead)
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Wreck Alley - Sentinel Island (Lake Mead)

Nevada, United States
AOW suggested6–91 m (20–300 ft) depthBoat entry

Boat dive — see Entry & access.

Wreck Alley - Sentinel Island (Lake Mead) at a glance

Wreck Alley - Sentinel Island (Lake Mead) is an advanced boat dive site in Nevada, United States with depths of 6.1–91.4 m (20–300 ft). Typically most favorable Dec · from 3 years of archive data. Divers commonly see Striped bass, Quagga mussel, and Bluegill. Check the latest conditions and entry details before you go.

Favorable window now· until 18:00 · sunset 17:49

Wind forecast for this hour · 7:00 · run 21 h ago
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Tap a factor for its source and model point

Site hazards: Extreme depth on the wreck line (140-300+ ft), mandatory decompression below recreational limits, entanglement on guide lines, silt, cold at depth

Read the full hazards ↓

Dive windows this week

Mon7:00–18:00 favorable

3 kn wind (3 kn wind)

Tue7:00–14:00 favorable, 14:00–16:00 moderate, 17:00–18:00 moderate

11 kn wind (11 kn wind)

Wed7:00–18:00 favorable

7 kn wind (7 kn wind)

Thu7:00–18:00 favorable

3 kn wind (3 kn wind)

Fri7:00–12:00 favorable, 12:00–13:00 moderate, 13:00–18:00 favorable

9 kn wind (9 kn wind)

Sat8:00–18:00 favorable

9 kn wind (9 kn wind)

SunNot 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 6:29 · Sunrise 6:56 · Sunset 17:49 · some windows run past sunset

Source: Open-Meteo wind · updated 25 Oct, 10:26 GMT-7

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Wreck Alley - Sentinel Island (Lake Mead)

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: Striped bass, Quagga mussel, Bluegill
Best time: Winter for best visibility (100 ft+)

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, 87% of days have historically been favorable, wind has typically been 9 knots
  2. February, 81% of days have historically been favorable, wind has typically been 10 knots
  3. March, 70% of days have historically been favorable, wind has typically been 12 knots
  4. April, 74% of days have historically been favorable, wind has typically been 11 knots
  5. May, 73% of days have historically been favorable, wind has typically been 12 knots
  6. June, 71% of days have historically been favorable, wind has typically been 12 knots
  7. July, 83% of days have historically been favorable, wind has typically been 12 knots
  8. August, 80% of days have historically been favorable, wind has typically been 11 knots
  9. September, 86% of days have historically been favorable, wind has typically been 10 knots
  10. October, 85% of days have historically been favorable, wind has typically been 9 knots
  11. November, 92% of days have historically been favorable, wind has typically been 8 knots
  12. December, 100% of days have historically been favorable, wind has typically been 6 knots, historically most favorable

December 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

A diver-created wreck park on the northeast side of Sentinel Island in Boulder Basin, where the local technical diving community has gathered roughly a dozen sunken boats found around Lake Mead. Several wrecks are linked by permanent high-visibility cave line starting near 140 ft and descending past 300 ft, including the Southern Cross (penetrable) and smaller speed and ski boats. The shallower wall above the wrecks makes a good recreational dive, while the wreck line itself is technical territory.

boatwallwreck

Extreme depth on the wreck line (140-300+ ft), mandatory decompression below recreational limits, entanglement on guide lines, silt, cold at depth

Reviews

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