Expect Dry Conditions and Warm Temperatures Through the First Half of This Week
Monsoonal weather patterns have moved into the Grand Canyon area decreasing fire danger. As a result, on Tuesday, July 8 at 8 a.m. fire managers lifted fire restrictions within Grand Canyon National Park. More »
Two Bats Collected in the Park Have Tested Positive for Rabies
One on the North Kaibab Trail and the other at Tusayan Ruin/Museum. Any persons having physical contact with bats in Grand Canyon National Park, please call 928-638-7767. Rabies can be prevented if appropriate medical care is given following an exposure. More »
Reclamation Releases Environmental Assessment for Public Review and Comment on an Experimental Protocol for High-Flow Releases from Glen Canyon Dam
Contact: Lisa Iams/USBR, 801-534-3673
Contact: Beverley Heffernan/USBR, 801-524-3712
The Bureau of Reclamation has released a Draft Environmental Assessment for the Development and Implementation of a Protocol for High-Flow Experimental Releases from Glen Canyon Dam, from 2011 through 2020 for a 30-day public review and comment period.
The EA analyzes the effects of implementing a protocol to conduct multiple high-flow experiments from the dam between 2011 and 2020 to better determine whether and how sand conservation can be improved in the Colorado River corridor downstream of the dam. The protocol will provide an adaptive management framework to learn how to better conserve the limited sand supply to the Colorado River below the dam, while ensuring that no significant impacts occur to other downstream resources affected by the high releases.
During a high flow experiment, the high volume of water released from the dam suspends sand stored in the river channel deposited by tributaries. A portion of that sand is re-deposited in the downstream river reaches as sandbars and beaches while another portion is transported downstream by river flows. These sand bars and beaches, and the associated near-shore habitats, are important components of the Colorado River ecosystem in addition to providing camping opportunities for river runners and hikers along the Colorado River within Grand Canyon National Park.
The Department of the Interior initiated development and implementation of the protocol as part of the ongoing Glen Canyon Dam Adaptive Management Program, to build on the knowledge gained from the previous high-flow experiments conducted in 1996, 2004, and 2008, and to comply with requirements and obligations established by the Grand Canyon Protection Act of 1992.
The draft EA was prepared in accordance with the National Environmental Policy Act and is available at http://www.usbr.gov/uc/envdocs/ea/gc/HFEProtocol/index.html
Written comments may be provided to Reclamation through February 14, 2011 to the address above or via e-mail at e-mail us . For more information, or to request a printed or CD-ROM copy of the EA, please contact Dennis Kubly at (801) 524-3715.
Did You Know?
The elk found within Grand Canyon National Park weigh as much as 1,000 pounds (450 kg), and have been known to injure people who approach them. Never approach wild animals. It is dangerous, and illegal, to feed the wild animals in a national park. Violators will be fined.