Summer in Colorado means lake days, paddleboards, boats, and weekends at the reservoir. But while open water is a huge part of summer fun, it also comes with risks many families underestimate.
At Foss Swim School, we remind families that lakes and reservoirs are very different from pools, and understanding those differences can help keep kids safer this summer.
Open Water Is Less Predictable
Unlike pools, lakes and reservoirs can change quickly. Families may encounter:
- Cold water temperatures
- Sudden drop-offs
- Waves and wind
- Slippery rocks and uneven shorelines
Even strong swimmers can tire more quickly in open water. Colorado lakes may feel refreshing on a hot day, but cold water can affect breathing, energy, and swimming ability faster than many people realize, especially for children.
Life Jackets Matter
For boating, paddleboarding, kayaking, or playing near deep water, properly fitted U.S. Coast Guard-approved life jackets are essential. Children should wear life jackets:
- On boats and docks
- Around unpredictable water
- During water sports
- If they are inexperienced swimmers
And remember: floaties and water wings are toys, not safety devices.

Swim Skills Are Important --- But Supervision Is Critical
Swimming lessons are one of the best ways to reduce drowning risk, but no child is ever drown-proof.
At Foss Swim School, we focus on helping children build water competency skills like:
- Floating on their back
- Controlling breathing
- Returning to safety independently
- Staying calm in the water
But even confident swimmers still need active supervision. Parents should:
- Stay within arm’s reach of young swimmers
- Put phones away while supervising
- Assign a “water watcher” during gatherings
Drowning is often quick and silent.
Help Kids Build Confidence Before Summer
Open water can feel overwhelming for children who are only used to pools. Before heading to the lake, talk through safety expectations and encourage kids to speak up if they feel tired, cold, or nervous.
Confidence, communication, and preparation all play a role in water safety.
A Safer Summer Starts with Preparation
Before your next Colorado lake day:
- Review water safety rules as a family
- Make sure life jackets fit properly
- Practice strong supervision habits
- Help kids build confidence and swim skills early
At Foss Swim School, our mission is to help children become safer, stronger, and more confident in and around water, so families can enjoy everything summer has to offer, safely.

About Foss Swim School
At Foss Swim School, we believe swimming is more than a sport; it's a lifelong, life-saving skill.
Since 1993, we've helped hundreds of thousands of swimmers grow in confidence, safety, and skill in and around water. Our proven Swim Path® curriculum is tailored to each student's age, experience, and ability, helping them make steady progress and reach important milestones, like floating, breath control, and mastering strokes.
We’re not just another swim school. Our entire facility is built specifically for swim lessons, from our warm, 91-degree pools to our thoughtfully designed viewing areas. Every detail supports learning, comfort, and fun.
Connect with Foss Swim School on Social Media: Lone Tree Location - Facebook, Instagram | Castle Rock Location - Facebook, Instagram
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