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Map of Hoover Dam Aggregate Plant (Lake Mead)
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Hoover Dam Aggregate Plant (Lake Mead)

Nevada, United States
AOW suggested21–31 m (70–100 ft) depthBoat entry

Boat dive — see Entry & access.

Hoover Dam Aggregate Plant (Lake Mead) at a glance

Hoover Dam Aggregate Plant (Lake Mead) is an advanced boat dive site in Nevada, United States with depths of 21.3–30.5 m (70–100 ft). Typically most favorable Dec · from 3 years of archive data. Divers commonly see Channel catfish, Bluegill, and Freshwater sponge. Check the latest conditions and entry details before you go.

No window today· next: tomorrow 7:00–18:00 · favorable & moderate

Wind forecast for this hour · 21:00 · run 11 h ago
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Tap a factor for its source and model point

Site hazards: Depth, fine silt, entanglement on structures, overhead environments in tunnels and underground rooms, fluctuating lake levels

Read the full hazards ↓

Dive windows this week

FriNo window

6 kn wind (6 kn wind)

Sat7:00–10:00 moderate, 10:00–18:00 favorable

12 kn wind (12 kn wind)

Sun7:00–18:00 favorable

2 kn wind (2 kn wind)

Mon7:00–18:00 favorable

2 kn wind (2 kn wind)

Tue7:00–11:00 favorable, 11:00–12:00 moderate, 16:00–18:00 moderate

13 kn wind (13 kn wind)

Wed7:00–18:00 favorable

5 kn wind (5 kn wind)

Thu7:00–18:00 favorable

5 kn wind (5 kn wind)

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 6:27 · Sunrise 6:53 · Sunset 17:53 · some windows run past sunset

Source: Open-Meteo wind · updated 23 Oct, 10:26 GMT-7

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Hoover Dam Aggregate Plant (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: Channel catfish, Bluegill, Freshwater sponge
Best time: Winter for 100 ft+ visibility and deeper lake levels

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, 88% of days have historically been favorable, wind has typically been 9 knots
  2. February, 80% of days have historically been favorable, wind has typically been 10 knots
  3. March, 67% of days have historically been favorable, wind has typically been 12 knots
  4. April, 76% of days have historically been favorable, wind has typically been 12 knots
  5. May, 80% of days have historically been favorable, wind has typically been 12 knots
  6. June, 77% of days have historically been favorable, wind has typically been 12 knots
  7. July, 80% of days have historically been favorable, wind has typically been 12 knots
  8. August, 83% 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, 84% of days have historically been favorable, wind has typically been 10 knots
  11. November, 88% of days have historically been favorable, wind has typically been 8 knots
  12. December, 97% 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

The submerged remains of the aggregate washing and classification plant that processed more than 6.5 million tons of sand and gravel for Hoover Dam's concrete, flooded when Lake Mead filled. The site spreads over roughly 8 acres of Boulder Basin and includes train tracks, a track hopper, tunnels, underground rooms and massive sorted aggregate piles. Local operators dive it as two separate sites (the Track Hopper and the Aggregate Piles) at about 70-100 ft, normally by boat charter; winter visibility can exceed 100 ft.

boat

Depth, fine silt, entanglement on structures, overhead environments in tunnels and underground rooms, fluctuating lake levels

Reviews

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