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Old 07-28-2008   #1
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Flagstaff, Arizona
Join Date: Dec 2004
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RRFW Riverwire – Diamond Creek to South Cove Update

RRFW Riverwire – Diamond Creek to South Cove Update
July 28, 2008

River Runners for Wilderness presents this report of conditions on the Colorado River to South Cove for those river trips travelling below Diamond Creek in Grand Canyon National Park.

Lake Mead Level and End of Current

As of July 27, 2008, Lake Mead's water surface stood at approximately 1105 feet above mean sea level, 120 feet below the lake's maximum elevation of 1225 feet. Since March 8, Lake Mead water elevation has dropped 11 feet.

The Bureau of Reclamation estimates the reservoir level will now begin to rise to a winter estimated high of 1113 feet.

As of July 27, 2008, river runners traveling downstream of Diamond Creek will come to the end of river current at approximately river mile 293. This is approximately four miles from South Cove. While there is good current all the way past the Iceberg Reef area (at approximately river mile 292.8 where a new rapid has formed), river runners are advised to keep an eye out for sandbars and other navigational hazards in Iceberg Canyon.

Diamond Creek

The Hualapai Nation is strongly requesting that river runners schedule their Diamond Creek put-ins and take-outs before 7 am or after 10 am. The Hualapai Diamond Creek road access fee is $64.20 per person (shuttle drivers and river runners) and $64.20 per vehicle. This fee, $60 with an additional 7% tax, applies to any do-it-yourself river running group arriving at or departing from Diamond Creek via the Diamond Creek road.

New Rapids and Other Hazards

A new river-wide rapid called Iceberg Rapid has formed at Iceberg Reef at approximately river mile 292.8. At this location the river flows past exposed boulders and over a submerged ridge of conglomerate rocks. There are sharp channels at either bank of the river, with a tongue of water through the middle. Night floating here is not recommended. As the water in Lake Mead rises this fall, this rapid should be re-submerged by November. Aerial photos of this rapid can be seen at the RRFW Gallery at http://www.rrfw.org/gallery/index.php.

The Pearce Ferry Rapid is a class IV rapid with an exposed rock in the center right of the rapid, more pronounced at lower river flows. There is a clear channel on the left side of the rock, but this channel goes straight into a reverse wave as the river runs into a hillside at full force. Night floating through this area is not recommended by the National Park Service. Scouting on river left is recommended, and wearing lifejackets is a must.

Other navigational hazards at this area are blind curves above and below Pearce Ferry Rapid. The river concessions jet boats are traveling this reach of the river through October, and will typically sound their horns at blind curves and at the rapid. To avert a collision, kayakers are advised to flush out if they are playing in the rapid.

New riffles have formed at Separation Canyon, Spencer Canyon, and Surprise Canyon, where side canyon stream gravel has pushed approximately half way across the river channel. Gneiss Canyon Rapid at river mile 236, is now a Class III rapid.

At river mile 275.5, the river current is deflected off of a submerged cliff on river left and forced into vegetation on river right. Care should be taken here to avoid floating into strainers along the right bank.

The floating docks at river mile 262.2 and 262.7 are navigational hazards and if your group is night floating through here, stay well into the middle of the river here.

Campsite Update

The first good campsite below Diamond Creek is on river right at the foot of Diamond Creek Rapid. The very small camp just above Travertine Canyon has eroded away and as of the end of February is no longer usable. There is a nice camp on river right at 229.6 Mile on river right.

Bridge Canyon Camp at 235.3 mile and Gneiss Canyon Camp at river mile 236 are in good shape, as is Bridge City Camp just above river mile 239. Separation Canyon Camp at river mile 239.8 is now on a large gravel outwash and is very large. The camps at 241 and 242 mile no longer exist. The camp at mile 243 on river right is still usable.

There is a large camp on cobble at Spencer Canyon. This camp has a solar composting toilet. The camp at Lava Cliff no longer exists. The Surprise Canyon Camp above river mile 248.7 is large and on a gravel outwash of Surprise Canyon. This camp is prone to flash flooding but has good early morning shade.

Access to the old Burnt Springs Camp is extremely difficult, requiring a climb up a twelve foot high silt bank. A small non-campable sandbar makes approaching shore here difficult. There is a good camp on river left just past the mouth of Quartermaster Canyon at river mile 260.8 which requires carrying gear up a cut bank. There is a small camp for a small group at mile 261.6 on river right. Campers at both of these camps must endure a heavy volume of helicopter activity.

There are two large sandy camps above the Pearce Ferry Rapid at approximately 280.2 and 280.7 Mile on river left. There is a very large camp just below Pearce Ferry Rapid at 281 on river left. A nice camp with a walk up the riverside silt is at South American Point on river left at approximately 285.6 Mile, across from Paiute Point and just upstream of the mouth of Grand Wash Bay. New large sandbar camps without shade have formed from here all the way into Iceberg Canyon.

Once on Lake Mead, there is a floating bathroom immediately past 293 Mile in upper Gregg Basin on the Nevada side of the lake, but it is not convenient for folks rowing to South Cove. There are many camps on Lake Mead above South Cove on the Arizona side of the reservoir above and below Sandy Point, just below 295 Mile. Pocket camps are also found in the southern end of South Bay, just a half mile from the South Cove take out.

National Park Service Rangers note that no camping is allowed on the South Cove ramp and take-out area, harbor area, or the public swimming area just north of the concrete ramp.

River runners are reminded that all sandbar camps are susceptible to unanticipated flooding by upstream events.

South Cove Takeout Information

This Riverwire is too long for the Mountainbuzz e-mail limits. You can see the rest of this post at www.rrfw.org

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RIVERWIRE is a free service to the community of river lovers from River Runners for Wilderness. To join, send an e-mail address to riverwire@rrfw.org and we'll add it to the RRFW RIVERWIRE e-mail alerts list.

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Check out RRFW’s Rafting Grand Canyon Wiki for free information on DIY Grand Canyon rafting info http://www.rrfw.org/RaftingGrandCanyon/Main_Page

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