East Canyon State Park, State park and reservoir in Morgan County, United States.

East Canyon State Park centres on a 680-acre (280 ha) reservoir held back by a 259-foot-high (79 m) arch concrete dam on East Canyon Creek, built between 1964 and 1966. The dam's face is smooth grey concrete in large rectangular blocks, with a low parapet along the crest and a darker, streaked base; on the right, spill water pours down the rocky abutment. The park sits in a narrow-walled canyon at 5,700 feet (1,700 m).

The dam was constructed between 1964 and 1966 as part of the Weber Basin Project and rises 79 meters above its foundation. The structure continues to provide water storage and flood control for the surrounding region.

The park preserves sections of the Mormon Pioneer Trail, a historical route that religious settlers traveled during their migration to Utah. Visitors today can walk along this path and experience the landscape these early travelers crossed.

The park offers 33 RV campsites with full hookups, concrete boat launches, restrooms, and shower facilities for overnight guests. Plan water or hiking activities based on the season, as mountain conditions vary significantly throughout the year.

The reservoir is fed by East Canyon Creek and forms part of the Weber Basin Project, a federal water-storage scheme. The 79-metre arch dam, finished in 1966, is only 2.1 metres wide at its crest, so the walkway along the top is narrow.