DFC PRoCEEDINCS - AIPF{ABETICAL usrlt\c oF ABsrRAcrs

Authors: spring spawning season, ripe males congregated in shallow to moderately deep runs, eddies below

Year: 1995 (xxvii)

Abstract

The U.S. Army Corps of Engineers (Corps) participates with the State of New lvlexico and locai associations in the rehabfitation of community-based acequias (irrigation ditches), which local water users no longer can maintain with hand iabor. One corrunon project design is to replace temporary, instream rock and bn:sh diversion structures with concrete-capped dams. The edsting dams (pre-prolect) usuaily appear to allow upstream fish passage, at least occasionallv. Therefore, the Corps incorporates a modified Denii Fishway into the desigr and construction of the new dam, with assistance from the U.S. Fish and Wildlife Service. This design was selected becar:se of self-regulation, lower flow requirements and reiatively low cost. The objective of the fishway is to provide fishes an opportunity to move upstream over the structure and, therefore, reduce project impacts on strearn fish popuiations. R,ES{/A4EN El U.S. Army Corps of Engineers (Cuerpo) participa con el Estado de New Mexico y asociaciones locales en la rehabilitaci6n de las acequias pertenecientes a la comunidad, a los cuales los usuarios locales no los pueden mantener con labores manuales. Un proyecto comrin se ha disefrado remplaza temporalmente, rocas dentro de la corriente y estructurx laterales de diversi6n con presas con revestimiento de concreto. Ias presas eristentes (pre-proyecto) usuaimente parecen permitir el paso de los peces corriente arriba“ al menos ocasionalmente. Por io lanto, el cuerpo ha incorporado una modilicaci6n en los caminos de peces ’Deniln dentro del diseflo y construcci6n de la nueva presa, con la xistencia del U.S. Fish and Wildlife Service. Este diserlo fue seleccionado por causa de su autoregulaci6n, bajos requerimientos de fluio 40