<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Christopher L. Holmquist-Johnson</dc:contributor>
  <dc:contributor>Elaina Holburn</dc:contributor>
  <dc:creator>David M. Mooney</dc:creator>
  <dc:date>2007</dc:date>
  <dc:description>&lt;p&gt;River spanning loose-rock structures provide sufficient head for irrigation diversion, permit fish passage over barriers, protect banks, stabilize degrading channels, activate side channels, reconnect floodplains, and create in-channel habitat. These structures are called by a variety of names including rock weirs, alphabet (U-, A-, V-, W-) weirs, Jhooks, and rock ramps. These structures share the common characteristics of:&lt;/p&gt;&lt;ol&gt;&lt;li&gt;Loose rock construction materials (individually placed or dumped rocks with little or no concrete);&lt;br&gt;&lt;/li&gt;&lt;li&gt;Extents spanning the width of the river channel; and&lt;br&gt;&lt;/li&gt;&lt;li&gt;An abrupt change in the water surface elevation at low flows.&lt;br&gt;&lt;/li&gt;&lt;/ol&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>Bureau of Reclamation</dc:publisher>
  <dc:title>Qualitative evaluation of rock weir field performance and failure mechanisms</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>