Projects > City of Redding

70 CFS with 1.75 mm slots
6 - ISI D36-48 Cylinder Screens
Year Installed:

Client: City of Redding, CA

Location: Sacramento River, Redding, CA

Background: The City of Redding's municipal intake draws up to 70 cfs from a critical spawning area of the endangered winter run chinook salmon. The city did not have funding to replace its pump station and intake, so a retrofit of the existing facility was needed so the intake would meet the state and federal fish screen criteria.

Solution: ISI designed and installed a series of six retrievable cylindrical screens that fit over the existing pump intakes on the intake tower. This design more than trippled the available intake surface area needed to meet the screen criteria in the shallow area. The construction did not interupt water deliveries of the cities year round operations and was completed without any major modifications to the existing facility. The City has realized significant cost savings and reliable operations while protecting the endangered salmon.