The Lake, Cromhall Quarry, Wotton Road, South Gloucestershire, GL12 8AA
The Lake
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Aerial view of The Lake at Cromhall Quarry
Discover The Lake at Cromhall Quarry

The Lake: Open Water Swimming, Diving & Paddleboarding

Immerse yourself in our limestone-filtered waters. Experience one of the UK's clearest lakes for leisure, training and adventure.

SwimDivePaddle
New for 2026The Lake Triathlon Series

Crystal Clear Water Activities Near Bristol

Outdoor Swimming Near Bristol

Swim

Immerse yourself in our crystal-clear water! Whether you're a leisurely swimmer or training for a triathlon, our fully lifeguarded site welcomes everyone.

  • 2 Hour Sessions
  • Changing Rooms
  • Water Safety For All Sessions
  • Excellent Water Quality
Book a Swim
Scuba Diving South Gloucestershire

Dive

Dive into adventure! Explore our underwater features with a buddy or join a dive with one of our affiliated schools.

  • Arrival from 08:30
  • Excellent Water Quality
  • Beach Entry
  • Dive Platform/Step Off
Book a Dive
Paddleboarding Near Bristol

Paddle

Enjoy paddle boarding with our self-launch or instructor-led sessions, perfect for all abilities. Board and wetsuit hire are available on-site.

  • Several Session Types
  • Board Hire Available
  • Intro to SUP Sessions
  • Group & Private Events
Book Paddleboarding

Discover the Best Outdoor Swimming, Scuba Diving and Paddleboarding Near Bristol

Located in South Gloucestershire, The Lake is the premier destination for crystal-clear, limestone-filtered water activities. Whether you’re a seasoned enthusiast or a curious beginner, we cater to all levels with a safe and serene environment.

Many qualified coaches and instructors run their sessions here, so whether you're looking for cold water swimming, your first paddleboarding experience or exploring our underwater world, your time here will be both enjoyable and safe.

Activities at The Lake

Effortless Exploration

Enjoy hassle-free access with our pay-as-you-go booking system. Simply book your session online and immerse yourself in our pristine waters for a refreshing escape near Bristol.

Expert Safety

Benefit from the expertise of our highly qualified staff, trained to the highest maritime standards. Every session is overseen by our water safety team, providing ultimate peace of mind for all users of The Lake.

Paddleboarding

Glide across The Lake’s surface with self-launch or instructor-led paddleboarding sessions. We offer board and wetsuit rentals to make your visit perfectly convenient.

Refuel and Relax

Visit our on-site shop and food wagon after your session. We offer hot drinks, tempting treats, and a range of swimming essentials to help you unwind by the water.

Embers Sauna

Warm up and recharge after your swim or dive with our lakeside wood-fired sauna experience. Enjoy restorative heat therapy with panoramic views over Cromhall Quarry.

South West Maritime Academy Logo

Professional Heritage: As part of the South West Maritime Academy, we host specialised training sessions and events throughout the year, maintaining the highest safety standards for water enthusiasts in the South West.

No Membership RequiredThe Lake is Open to Everyone

We believe everyone should have the opportunity to experience the joy of water activities. Book your session online today and embark on an unforgettable adventure at The Lake.

Book An Activity Today
The Lake Triathlon Series
Series Debut 2026

The Lake Triathlon Series

Race in the clearest water in the South West. Join our inaugural in-house sprint series at Cromhall Quarry.

Dates & Registration

Upcoming Activities At The Lake

October 2026

Today
9 October 2026Friday
Swimming - Swim Session 1 (129)
Swimming - Swim Session 2 (122)
Swimming - Swim Session 3 (141)
Swimming - Swim Session 4 (134)
10 October 2026Saturday
Dive - Dive Session (62)
Swimming - Swim Session 1 (139)
Swimming - Swim Session 2 (108)
Swimming - Swim Session 3 (127)
Swimming - Swim Session 4 (96)
11 October 2026Sunday
Dive - Dive Session (54)
Swimming - Swim Session 1 (116)
Swimming - Swim Session 2 (123)
Swimming - Swim Session 3 (104)
Swimming - Swim Session 4 (109)
12 October 2026Monday
Swimming - Swim Session 1 (109)
Swimming - Swim Session 2 (102)
Swimming - Swim Session 3 (121)
Swimming - Swim Session 4 (116)

The Lake Blog

Read more about The Lake and our upcoming events

The Lake Tri Series 2026 Race 1. Picture by Carl Hewlett 58 1024x683
14/05/2026/6 minutes

A New Era Begins: The Lake Triathlon Series 2026 Kicks Off!

The Lake transformed into a hub of high-stakes endurance, marking the successful launch of the 2026 Triathlon Series.

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2 saunas
30/04/2026/2 minutes

Steaming Ahead: Embers Sauna Named Regional Finalists in the UK StartUp Awards 2026

Huge news from the shores of The Lake! Our onsite partners, Embers Sauna, have been named regional finalists.

Read More