PAGE -- Boaters on Lake Powell will now have to have federal inspectors check their craft for zebra or quagga mussels before they're allowed onto the water.
Related Lake Powell News
The new rules announced on Wednesday by the Glen Canyon National Recreation Area go into effect at the end of the month. A boater 'self-certification' program in place since 2007 will be discontinued at all but remote launch sites.
The inspection rules apply to all of Lake Powell's major launch ramps. Hours of operation will vary but generally cover daylight hours. Ramps will be closed when inspectors aren't present.
The thumb-sized mussels can clog pipes and gum up waterworks and pose a threat to water systems across the West. They were first discovered west of the Rockies in January 2007 in Lake Mead.
(Copyright 2009 by The Associated Press. All Rights Reserved.)