Wyoming’s rivers and streams are a paradise for anyone who loves to fish. The rush of casting a line into clear waters, surrounded by rugged landscapes, is hard to beat. But as summer heats up, those same waters can become a tough place for fish to survive. The Wyoming Game and Fish Department has raised a red flag about rising water temperatures, urging anglers to change how they fish to protect the state’s fish, especially trout, during the hottest months. By making a few simple adjustments, fishermen can help ensure their favorite spots stay full of life for years to come.
Why Warm Water Is a Problem for Fish
When summer temperatures climb, Wyoming’s streams and rivers warm up too. This isn’t just uncomfortable for fish—it can be deadly. According to experts, trout start to struggle when water hits 70 degrees Fahrenheit. If it creeps above 75 degrees for too long, or spikes past 80 degrees even briefly, trout can die. The reason? Warmer water holds less oxygen, which fish need to breathe. Low oxygen levels stress fish out, making it harder for them to recover from the fight of being caught and released. This isn’t just a trout problem—other fish species feel the heat too, but trout are especially sensitive.
The stress of being hooked, reeled in, and handled only makes things worse. A fish fighting for its life in warm, low-oxygen water is like a runner sprinting at high altitude—it tires out fast and struggles to bounce back. If the water’s too warm, even a quick release might not save the fish. That’s why the Game and Fish Department is asking anglers to rethink their approach during the summer.
How Anglers Can Help
Protecting Wyoming’s fish doesn’t mean giving up fishing altogether—it just means fishing smarter. The Game and Fish Department offers practical tips to keep fish healthy when temperatures rise. One of the easiest ways to help is to fish early in the morning. At dawn, water temperatures are cooler, giving fish a better shot at surviving the catch-and-release process. Carrying a small pocket thermometer is a smart move to check water temperatures before casting a line. If the water hits 65 degrees, it’s time to think about keeping what you catch, as long as it’s within legal limits. Once the water reaches 70 degrees or higher, the department strongly recommends stopping catch-and-release altogether.
For those who love the thrill of catch-and-release, technique matters. The goal is to get the fish back in the water as quickly and gently as possible. Here’s how to do it right:
- Reel fast, release faster: Play and land the fish quickly to avoid wearing it out. A long fight in warm water can leave a fish too exhausted to recover.
- Keep it wet: Try to keep the fish in the water as much as possible. Lifting it out, even for a quick photo, reduces its chances of survival.
- Handle with care: Avoid squeezing the fish or sticking fingers in its gills. If the hook is deep, cut the line instead of yanking it out.
- Use the right gear: Flies and lures are better than bait for catch-and-release, as they’re less likely to be swallowed. Barbless hooks make it easier to release the fish without causing harm.
If a fish looks too tired to swim upright after being caught, it’s probably not going to make it. In that case, if regulations allow, consider keeping it for dinner instead of releasing it to die later.
Choosing the Right Spot
When the heat makes lowland rivers too warm for fishing, there’s another option: head to higher ground. Wyoming’s high-country fisheries, tucked away in cooler mountain areas, often have lower water temperatures that are safer for fish. These spots offer a chance to escape the summer heat while still enjoying a great day on the water. The Game and Fish Department encourages anglers to explore these areas as an alternative when their usual spots get too warm.
Why It Matters
These recommendations aren’t about new rules or restrictions—they’re about keeping Wyoming’s fisheries healthy for the long haul. Fishing isn’t just a hobby; it’s a way of life for many who love the outdoors. By making small changes, like fishing early, checking water temperatures, and handling fish carefully, anglers can help protect the resource that makes Wyoming such a special place to cast a line. Every fish that survives today is one more waiting for the next trip.
The Game and Fish Department’s advice boils down to common sense: fish when it’s cool, use gear that’s easy on the fish, and know when to call it a day. By following these tips, anglers can enjoy their time on the water while ensuring there’s plenty of fish for the next season—and the next generation.
Final Thoughts
Wyoming’s rivers and streams are more than just places to fish—they’re part of what makes the state a haven for outdoor enthusiasts. With summer temperatures pushing water conditions to the limit, it’s up to anglers to step up and fish responsibly. By choosing the right time, place, and techniques, they can keep the state’s fish populations thriving. So next time you head out with your rod and reel, take a moment to check the water temp, keep the fish wet, and maybe plan that high-country trip. It’s a small effort that makes a big difference for the fish and the future of fishing in Wyoming.
