The U.S. Bureau of Reclamation recommends river runners secure their vessels to withstand changing levels and campers should set up tents in areas out of reach of the river. Officials plan to release higher-than-normal amounts of water from Glen Canyon Dam, possibly without notice, which will cause rapid changes to the Colorado River’s flow.

The Western Area Power Administration says there’s a possibility that Glen Canyon Dam will be needed to augment regional power supplies in the event of a system emergency. Releases could last a couple hours or even longer and the fluctuations will be more noticeable on weekends.