Price-Stubb Diversion Dam Fish Passage Structure, Colorado River. 1:20 ScalePhysical Model Study

摘要

This report documents the results of physical model investigations associatedwith developing a fish passage concept for Price-Stubb Diversion Dam (PSDD), located on the Colorado River, near Grand Junction, Colorado. The recommended concept consists of burying the existing diversion dam with a rock structure and providing a fish passage channel that produces passable velocities for Colorado pikeminnow and razorback sucker fish species over a range of river discharges from 640 cubic feet per second (ft3/s) up to 30,800 ft3/s. The results of this study identify the hydraulic performance characteristics of the recommended concept and demonstrate proof-of-concept.