Colorado is home to famous rafting rivers, crystal-clear reservoirs, and mountain streams, but some of these destinations also have a long history of drownings and close calls.

Whether you're planning a float through Glenwood Canyon or a day on Blue Mesa Reservoir, these are the 10 bodies of water that deserve extra respect before you jump in.

Look: 10 Dangerous Colorado Rivers and Lakes You Should Know

The following lakes and rivers have earned a reputation for catching visitors off guard. Scroll through the list and find out why knowing the risks could make your next adventure much safer.

Gallery Credit: Wesley Adams

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Why Colorado's Beautiful Water Can Be Surprisingly Dangerous

Glenwood Canyon Walking path
Wes Adams, Townsquare Media
Glenwood Canyon Walking path

Read More: Colorado's Reopened Hike to Hanging Lake: What You Need to Know

If you’ve ever dipped your toe in a Rocky Mountain stream or jumped in a mountain lake, you know that water can be very cold. Cold-water shock can cause gasps, rapid breathing, and all kinds of muscle problems in seconds. Meanwhile, fast currents, hidden debris, and changing weather can all turn a trip to the water into an emergency.

The Biggest Danger Isn't the Water—It's Underestimating It

10 Colorado Towns Still Proud To Be Family-Friendly
Photo by Alden Maben on Unsplash
10 Colorado Towns Still Proud To Be Family-Friendly

Read More: Colorado Fire Threat Stops Popular Buckhorn Lakes Recreation

Colorado is by far the best-looking state I’ve ever lived in. You can find real rugged western wilderness here, but it's important to respect the risks that come with spending time in the mountains, around the wildlife, and in the water.  Safety while adventuring requires preparation.

Water emergencies in Colorado can occur when people pay more attention to the weather than to water conditions. 90-degree days don’t make rivers safe to swim, and calm reservoirs can become dangerous during afternoon winds. Wearing life jackets, knowing river conditions, and respecting cold water are three of the biggest things you can do to avoid an accident or an emergency on Colorado’s waterways.

PLAY OUTDOORS: See All 43 of Colorado's Beautiful State Parks

There are 43 State Parks open to the public in Colorado. We also include the Arkansas Headwaters Recreation Area as an unofficial State Park. Scroll through the photos to learn more about each one of these popular destinations.

Gallery Credit: Wes Adams

KEEP GOING: 10 Places in Western Colorado to Watch for Rattlesnakes

Rattlesnake encounters aren’t just a backcountry issue—they can happen on some of the most popular trails and river corridors in Western Colorado. Areas with rock piles, desert scrub, and easy access to prey create ideal hiding spots, meaning even busy recreation zones can double as snake habitat.

Gallery Credit: Wesley Adams