The June sucker is known only from Utah Lake in the United States, its feeder streams, and the adjacent Provo River.

Some contributions to its decline include predation on its young by introduced species such as the common carp and walleye, pollution and turbidity, drought, alteration of water flow, and loss of some native vegetation.

[1] June sucker were stocked into Red Butte Reservoir, where a natural sustaining population has been established.

The Springville State Hatchery has also grown fish in ponds historically for population augmentation.

As of Spring 2023, more than 1,000,000 June suckers have been raised and released into Utah Lake and other local waters from Logan Fish Hatchery as a protective measure against extinction.

[6] Recovery efforts included habitat restoration to combat significant channelization, impoundment and loss of gradient in tributary streams that was preventing June sucker spawning and recruitment.