An experimental high volume release from Glen Canyon Dam will take place next week at Lees Ferry trout fishery in Marble Canyon. The flows are short term, yet significant enough to preclude any fishing from occurring during the peak high releases. The Department of Interior will begin the release from Glen Canyon Dam Monday and maintained at peak release volume for several days before ramping down on Thursday. The Departments goal is to redeposit sand stored in the river channel to rebuild eroded sandbars and beaches downstream of the Paria River in Grand Canyon National Park.