MAMMOTH, Wyo. — Yellowstone National Park has lifted fishing restrictions on three rivers that went into effect in July due to warm water temperatures and low flows.

Restrictions had been in effect on the Madison, Firehole and Gibbon rivers and their tributaries.

The initial closure, which was dialed back to hoot owl restrictions late last month, was necessary to protect the park’s native and wild trout fisheries when water temperatures exceeded 68 degrees (20 degrees Celsius) and flows were low. These conditions can be lethal to trout.

The park's staff continued to monitor the rivers and streams throughout the partial closure and have determined that cooling temperatures, recent precipitation and the extended forecast for cooler weather and a chance of rain allowed for the restrictions

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