Hoot Owl Restrictions in Montana refer to fishing regulations that are put in place during times of high water temperatures. These regulations are designed to protect fish populations when they are most vulnerable to stress and mortality due to low oxygen levels and other factors.
When do they go into effect
Restrictions go into effect during the hottest months of the year, typically from mid-July to September. During this time, fishing is usually allowed only during the cooler hours of the day from midnight to 2 pm. This is why the restrictions are called “hoot owl” restrictions, as the hours allowed for fishing fall during the hours when hoot owls are typically active.
The Hoot Owl Restrictions vary depending on the specific location and river system in Montana. Some areas may have more restrictive regulations than others, based on the specific needs of the fish populations in that area. The Montana Fish, Wildlife and Parks (FWP) department is responsible for determining the regulations for each river system.

The purpose of these restrictions is to protect fish populations during times of high stress. When water temperatures rise above a certain threshold, fish can become stressed and mortality rates can increase. This is especially true for trout on rivers like the Gallatin and Clarkfork where trout are sensitive to changes in water temperature and oxygen levels.
The specific temperature threshold for Hoot Owl Restrictions varies depending on the river system. In some areas, restrictions may go into effect when water temperatures reach 68 -73degrees Fahrenheit for consecutive days.

Fly Fishing rivers under Hoot Owl Restrictions.
Anglers should monitor water temperatures even if they are fishing before 2pm. Fly fishers should always use barbless hooks, as these are easier to remove from the fish’s mouth. Barbless hooks aid in reducing the risk of injury to our fish. Try to keep fish in the water for hook removal. Wet hands if fish need to be handled and release them as quickly as possible.
Hoot Owl Restrictions are not the only fishing regulations in Montana. There are a variety of other regulations in place throughout the state that are designed to protect fish populations. These may include limits on the number or size of fish that can be kept, restrictions on certain fishing methods or gear, and seasonal closures in certain areas.

Enforcement of regulations in place
The Montana FWP is responsible for enforcing fishing regulations throughout the state. Anglers who violate these regulations may be subject to fines, penalties, and even the loss of their fishing license. It is important to be aware of the regulations that are in place and follow them carefully to help protect Montana’s fish populations.
Montana’s fishing regulations designed to protect fish populations during times of high stress, typically when water temperatures are high. These regulations vary depending on the specific location and rivers. Anglers should be aware of the regulations in their area and follow them carefully to help protect Montana’s fish populations. The latest regulations and updates to river closures can be found here.
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