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<br />COLORADO RIVER RECOVERY PROGRAM <br />FY 97 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER: ~ <br /> <br />I. Project Title: Floodplain Habitat Restoration Program <br /> <br />II. Principal Investigator: <br /> <br />Pat Nelson <br />U.S. Fish and Wildlife Service <br />P.O. Box 25486. DFC <br />Denver. CO 80225 <br />Pat Nelson@FWS.GOV <br />303-236-29B5 Ext. 226 <br />303-236-0027 FAX <br /> <br />III. Project Summary: <br /> <br />The purpose of the Floodplain Habitat Restoration,Program is to restore <br />or enhance natural floodplain functions that support recovery of <br />endangered fishes in the upper Colorado River basin. Levees were <br />breached at 3 sites on the Green River such that they would begin to <br />flood when Jensen flows exceed 13.000 cfs; post-restoration surveys <br />suggest that 2 of the sites now require 16.000 cfs to flood because. <br />during 1997 runoff. sediments were deposited where levees were notched. <br /> <br />Eighteen sites were screened for contaminants (including pre- <br />acquisition surveys on 13 private properties. two candidate growout <br />ponds. and two post-restoration surveys). On sites for which results <br />have been received. no contaminants problems are apparent (including <br />post-restoration surveys). <br /> <br />Floodability assessments were conducted as pre-acquisition surveys on <br />privately-owned lands. Results will be used for appraisals' and to <br />identify habitat enhancement options. <br /> <br />Levee removal evaluation data indicate use of floodplain habitats by <br />both native and nonnative fishes. including razorback suckers and <br />Colorado squawfish. The percentage of nonnatives in main channel <br />habitats is approximately the same as. possibly slightly 'greater than. <br />in floodplain habitats, Floodplain terraces and depressions supply <br /> <br />1 <br />