Mammoth Lake Texas
Frequently Asked Questions
Helpful answers about waivers, day passes, diving, rentals, lake rules, visibility, and planning your visit.
How do I sign a waiver?
Everyone who enters the park must have a waiver on file, even if they are not diving. A parent or legal guardian must complete the waiver for minors.
Do I need to purchase a day pass before arrival?
Yes. Certified divers are required to complete the waiver and purchase a day pass before arrival. If the date is not listed online, the cutoff for entry that day has passed.
Do I have to be scuba certified to dive?
Yes. To scuba dive at Mammoth Lake Texas, you must be a certified Open Water Diver or be under the direct supervision of a credentialed scuba instructor as part of an approved training activity.
Does Mammoth Lake Texas provide scuba lessons or certification?
Mammoth Lake Texas is the dive facility. Scuba training and certifications are provided through Mammoth Dive Academy and approved partner dive shops. Many local instructors and dive centers bring students to Mammoth to complete open water training dives.
What is the visibility like?
Mammoth Lake Texas is a natural freshwater lake with no added chemicals or clarity agents. Visibility changes with season, weather, depth, sunlight, wind, rain, temperature, and lake activity.
Visibility commonly ranges from 5 feet to 35 feet throughout the year.
How deep is the lake?
The deepest area is normally between 65 and 70 feet depending on water level. The average lake depth is about 38 feet, with many attractions in shallower training-friendly depths.
Can I come just to swim?
Mammoth Lake Texas is a dedicated scuba diving facility, not a recreational swimming facility. Swimming is permitted only when accompanying divers as part of a scuba-related visit. If your primary goal is swimming, a public lake or swimming area is a better fit.
Can non-divers visit?
Yes. Non-divers and observers may enter the park with a paid entry pass and completed waiver. Mammoth is first and foremost a scuba facility, so all guests must stay clear of diver down flags, training areas, docks, and bubbles.
Why do observers have to pay?
Mammoth Lake Texas is a private recreational facility. Admissions help support lake maintenance, grounds, insurance, staffing, safety equipment, and facility operations.
Can I rent gear?
Yes. Rental gear is rented through Mammoth Dive Academy. Gear should be reserved in advance by purchasing a day pass and adding rental gear as an add-on when available, or by emailing dive@divemammoth.com.
Can I get air or nitrox fills?
Yes. Air fills are $10 and 32% nitrox fills are $15. Tanks must be current in visual inspection and hydrostatic test. We also support oxygen fills for CCR and blended gas fills.
Does Mammoth allow the Avelo Scuba System?
No. At this time, the Avelo Scuba System is not permitted at Mammoth Lake Texas for recreational diving, training, certifications, demonstrations, promotional events, equipment evaluations, or third-party instruction.
This policy is based on operational consistency, risk management, emergency response planning, insurance review, and participant safety.
Are kayaks or paddleboards allowed?
No. Kayaks and paddleboards are not allowed. Mammoth Lake Texas is first and foremost a scuba diving facility. If your primary goal is kayaking or paddleboarding, a public lake or river is a better fit.
Is freediving allowed?
No. Freediving is not permitted at Mammoth Lake Texas.
Is there wildlife in the lake?
Yes. Mammoth Lake Texas has fish, turtles, aquatic plants, and other freshwater wildlife. Our most recognizable residents include American paddlefish, which can grow several feet long.
Is Mammoth Lake Texas man-made?
Mammoth Lake Texas is a 65-acre dedicated scuba park that began as a sand pit and filled naturally through an aquifer. The lake is not chemically treated and includes aquatic wildlife, training areas, and underwater attractions.
Do you accept credit and debit cards?
Yes. We accept cash, Apple Pay, Google Pay, and major debit and credit cards.
To keep prices low, a 3% non-cash adjustment is applied to card payments. Pay with cash and save.
Do I need to bring food or ice?
You are welcome to bring food, drinks, and picnic items. No glass containers are allowed. There are several restaurants and convenience stores nearby, including Buc-ee’s within a short drive.
Do I need a reservation?
Yes. Reservations/day passes are required before arrival. Certified divers should purchase their day pass online and complete the waiver before coming to the park.
For gear rental, email dive@divemammoth.com or add rental gear to your reservation when available.
Do you have lodging or camping?
We allow tent and under-the-stars camping for an additional $5 per person, per night. A limited number of RV spaces may be available by reservation.
Mammoth Lake Texas is also within a short drive of several local hotels.
Can I reserve a pavilion?
Public pavilions may be reserved for groups of six or more. Pavilion reservations are $25 per day for groups.
Can I bring my dog?
Leashed dogs are welcome, but dogs are not allowed in the lake.
- Dogs must remain leashed, crated, or safely secured while owners are diving.
- Please clean up after your dog.
- Do not leave dogs unattended in a vehicle unless the vehicle is safely climate controlled.
- Service dogs are welcome, subject to safety and lake-use guidelines.
Do you offer group discounts?
Group options may be available for groups of 12 or more. Call or email for details: (979) 288-6118 or dive@divemammoth.com.
