Laserfiche WebLink
U.S. DEPARTMENT OF THE INTERIOR <br />GALE A. NORTON, Secretary <br />U.S. GEOLOGICAL SURVEY <br />Charles G. Groat, Director <br />The use of firm, trade, and brand names in this report is for identification purposes only and does <br />not constitute endorsement by the U.S. Geological Survey. <br />For additional information write to:Copies of this report can be purchased <br />from: <br />District Chief <br />U.S. Geological Survey <br />U.S. Geological Survey <br />Information Services <br />Box 25046, Mail Stop 415 <br />Box 25286 <br />Denver Federal Center <br />Denver Federal Center <br />Denver, CO 80225-0046 <br />Denver, CO 80225 <br />