WSP06790 - Laserfiche WebLink

Home Browse Search

COLORADO RIVER RECOVERY PROGRAM FY 98 ANNUAL PROJECT REPORT RECOVERY PROGRAM PROJECT NUMBER: CAP-4c I. Project Tille: Operation of the Redlands Gage II, Principallnvestigator(s): Rocky Dial Bureau of Reclamation 2764 Compass Dr, Grand Junction, CO 81506 Phone: 970:248-0656 Fax: 97Q-248-0601 e-mail: rdial@uc,usbr,gov III. Project Summary: This project includes the annual start-up of the Redlands Fish Passage water measurement equipment and the operation of the Gunnison River gage below the Redlands Diversion Dam, Since Gunnison River flows at Whitewater were never below 1,250 cfs while the ladder was in operation, flow measurement through the fish ladder and below Redlands Diversion Dam was not necessary for river management this year. IV. Study Schedule: It is necessary to perfonn annual and periodic maintenance on both the fish ladder gage and the Gunnison River gage. As long as the Redlands Fish ladder is in operation it will be necessary to measure the flows in the ladder during low runoff years, In addition, the Gunnison River gage will be helpful for maintaining minimum stream flows below the Redlands Diversion Dam. This worX includes three flow gages; one measures the flow in the fish ladder, one measures the flow in the attractive flow bypass pipeline, and the third measures the flow in the Gunnison River below the Redlands Diversion Dam, V, Relationship to RIPRAP:- Colorado River Action Plan: Gunnison River II,B,1.e. Identify and secure minimum flows below Redlands Diversion Dam VI. Accomplishment of FY 98 Tasks and Deliverables, Discussion of Initial Findings and Shortcomings: In November 1997 the gaging equipment at the Redlands Fish ladder was removed for winter storage and maintenance. The flow meter in the fish ladder bypass pipeline was damaged and repairs were made. Damage was caused by debris in the water striKing the flow meter impeller, In the Spring of 1998, most of equipment was reinstalled and the stilling well for the fish ladder flow gage was cleaned out. Following construction the intake structure was modified by the fish ladder operators, In its current configuration the fish ladder intake structure bypasses the trash rack, Without the benefit of the trash rack the bypass pipeline flow meter would have been damaged again so it was not installed. In order to protect the flow meter impeller, the trash rack needs to be used. Since water year 1998 flows exceeded the needs of the ladder and the downstream habitat, not all flow measurement was completed which resulted in not utilizing all budgeted funds, CAP-4c-l