• Mammoth Lake Dive

Mammoth Lake Dive

A sunken cargo plane, a mammoth sculpture, and 60 acres of lake built for divers.

A full day trip near Lake Jackson, TX with the Tom's Dive Team: two dives, a lunch, and a group of familiar faces. Explore sunken buses, train cars, a fire truck, and a C-130 cargo plane. $15 for members, $25 for non-members, plus lake entry and additional air fills.

Availability: In Stock

Lake Jackson, TX · ~3 hours from Austin · Annual, typically August

60 Acres, a Sunken C-130, and a Mammoth. Yes, Really.

Mammoth Lake is one of the more unusual freshwater dive sites within driving distance of Austin: a 60-plus-acre lake built specifically for training and exploration diving, with sunken buses, train cars, a fire truck, a full-size C-130 cargo plane, and a mammoth sculpture scattered across the bottom. Visibility runs 5 to 45 feet depending on depth and season, so there’s something to see whether you’re a newer diver or looking for a full day of exploration.

A full day trip organized by the Austin Aquanauts: two dives, a lunch, and a group of familiar faces to explore it with. $15 for members, $25 for non-members, plus lake entry and air fills. Open Water certification required. Register Here or call (512) 451-3425.

Event Details

What’s Included and What to Plan For

Included

  • Two dives at Mammoth Lake 
  • Two tanks rentals
  • A day exploring buses, train cars, a fire truck, a C-130 cargo plane, and the mammoth sculpture
  • Company of other Austin Aquanauts and Tom’s divers

Not Included

  • Lake entry fee (paid separately on site)
  • Additional air fills (paid separately on site)
  • Transportation to Lake Jackson (carpools are often arranged informally through the club)
  • Personal dive gear (Tom’s can help outfit you beforehand if needed)

RSVP for this event

Mammoth Lake Dive

Spots and current dates are managed on the Austin Aquanauts calendar. Call Tom’s with any questions before you sign up.

Regsister Heree
Who this event is for

A Good Fit for Divers Who Want a Full Day in the Water.

Open Water and up

Certified divers of most experience levels

Mammoth Lake’s varied depths give newer divers plenty to explore in the shallows while more experienced divers can push toward the deeper attractions. Open Water certification or higher is expected.

Explorers

Divers who like a site with a story

This isn’t a reef dive. It’s a lake full of deliberately placed structures built for training and exploration. If you like a dive with things to find, this is a good one.

First-timers to the club

A low-pressure way to try an Aquanauts event

It’s a full day, a fair drive, and a genuinely fun group. A common first event for divers checking out the Austin Aquanauts before deciding whether to join.

What to expect

A Day Built Around Exploration, Not a Schedule.

Mammoth Lake is privately operated and set up specifically for divers, with training platforms and staged attractions spread across more than 60 acres. Expect two dives over the course of the day with a break for lunch in between. Visibility varies with depth and recent weather, generally 5 to 45 feet, so bring a light if you want to get a good look at the details on the C-130 and the smaller staged wrecks.

This is a day trip, not an overnight, so plan for the drive down and back on the same day. Exact meeting time and carpool coordination are shared closer to the event date through the Austin Aquanauts calendar.

Mammoth Lake underwater site map showing training platforms and staged attractions Mammoth Lake topographical map
Why dive with the Aquanauts

Familiar Faces Make a Long Drive Worth It.

A day trip like this is a lot more fun with people you already know. Tom’s and the Austin Aquanauts have been building that community since 2013, so you’re never diving with total strangers.

Open to everyone

No membership required to come

Members pay a lower price, but this event, like most on the calendar, is open to any certified diver who wants to join.

Local expertise

The group knows the site

Plenty of Aquanauts have dived Mammoth Lake before and are happy to point out what’s worth seeing and where.

Part of a bigger calendar

One stop on a full year of events

Mammoth Lake is one of several day trips the club runs each year, alongside weekly local dives and social events.

Backed by Tom’s

Since 1982

The Austin Aquanauts operate out of Tom’s Dive & Swim, Austin’s dive shop since 1982, so questions about gear, certification, or the event itself have somewhere to go.

Common questions

Frequently Asked Questions

Do I need to be an Austin Aquanauts member to go?

No. Non-members are welcome at the non-member price. Many divers try Mammoth Lake before deciding whether to join the club.

What certification level do I need?

Open Water Diver certification (SSI, PADI, NAUI, or equivalent) is the general expectation. If you’re unsure whether your certification and experience are a good fit, call Tom’s before you sign up.

How do I get to Mammoth Lake?

It’s about a three-hour drive from Austin to Lake Jackson, TX. Carpools are often arranged informally through the club; ask when you RSVP.

Is food provided?

Yes, a grill-out lunch is included as part of the day.

Do I need my own gear?

Bring what you have. Tom’s can help you rent or fill any gaps in your kit before the trip. Air fills at the lake are paid separately on site.

Ready to go?

Mammoth Lake Dive

RSVP through the Austin Aquanauts calendar, or call Tom’s with questions.

Call (512) 451-3425 → Regsiter Here

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