Work on upstream portal of Pelton dam diversion tunnel nearing completion. The wooden structure, known as a "crib", will form one end of the coffer dam. Kelsh explained that to get the large cable strung, it was first necessary to frag a five-eighths-inch one across which was followed by a seven-eighths-inch cable. Only one small pour of concrete remains for the upstream portal of the project’s diversion tunnel. Fish Work FinishIt is expected that fish facilities, including the barrier, which stretches across the river, upstream migrant structure, ladder and fish trap will be finished by this weekend.