Go Back   Mountain Buzz > Whitewater Boating > Whitewater Kayaking

Thread Tools Display Modes
Old 08-25-2012   #1
Tom Martin's Avatar
Flagstaff, Arizona
Join Date: Dec 2004
Posts: 818
RRFW Riverwire – Hance Rapid Undergoes Major Change

RRFW Riverwire – Hance Rapid Undergoes Major Change
August 25, 2012

On the Colorado River in Grand Canyon, Hance Rapid at River Mile 77.2, is one of the handful of difficult and legendary rapids where the run is rocky and the holes many. The rapid is a thirty foot drop in a little over a half mile, as measured in the 1923 USGS survey.

A series of monsoon storms in the last two weeks have brought massive amounts of boulders and gravel to the rapid via Red Canyon, the side canyon responsible for the debris in the river at Hance Rapid.

The left run of Hance is often chosen by river runners to avoid large right side holes. Due to recent flooding, the left run is now blocked by boulders and gravel. The new material has moved more of the river’s flow to the center of the river. Scouting the rapid in its new configuration is strongly advised.

The distinctive large room sized boulder on river left, known variously as the Muffin or Brain or Hamburger rock, was the marker for the left run. River runners attempting this route would try entering to the left of this boulder to enter the slower water just below it.

Before the construction of Glen Canyon Dam, completed in 1963, spring snowmelt river flows well over 100,000 cubic feet per second would clear away boulders and gravel from side canyon flood events like the one in Red Canyon. Today, managed flood flows only reach 45,000 cubic feet per second, too low to flush the side canyon debris on down the Colorado River, potentially making rapids much more difficult, especially at low water

Two aerial photos of the new rapid taken August 24, 2012, have been posted at the River Runners for Wilderness photo Gallery. RRFW would like to thank Michael McComb for the use of these photos. The link to the photos is here:

Home -

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~
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.

Join RRFW’s listserver to stay abreast of and participate in the latest river issues. It’s as easy as sending a blank e-mail to Rafting_Grand_Canyon-subscribe@yahoogroups.com

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

Check out new items and donate at the RRFW Store! Visit:
www.rrfw.org/store to check out the deals! RRFW is a non-profit project of Living Rivers.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~
Tom Martin is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Topic Thread Starter Forum Replies Last Post
RRFW Riverwire – Grand Canyon Groups Stop Change to One Trip Rule Tom Martin Whitewater Kayaking 44 04-08-2010 10:48 PM
RRFW Riverwire – Pearce Ferry Rapid Update Tom Martin River Access & Safety Alerts! 8 01-07-2009 05:38 AM
RRFW Riverwire – River Runner Drowned at Hance Rapid Tom Martin Whitewater Kayaking 1 03-18-2008 04:49 PM
RRFW Riverwire – Pearce Ferry Rapid Update Tom Martin Whitewater Kayaking 2 11-26-2007 08:57 PM
RRFW Riverwire – Pearce Ferry Rapid Update Tom Martin Whitewater Kayaking 0 10-12-2007 06:15 PM

» Classified Ads
Jackson Karma Small...

posted by Rendezvous River Sports


Jackson SuperStar

posted by bodhizafa

Jackson Superstar kayak, black color. In ok condition. ...

Pyranha Burn 3 Large B/G/W

posted by Rendezvous River Sports


Powered by vBadvanced CMPS v3.2.3

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:09 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.