FID Hydro Plant Forebay

About

In October of 2010, FID installed a custom farmers screen just upstream of the fore bay of their penstock in order to manage debris that accumulates in their conveyance canal.

This water has already been screened for fish at the point of diversion so this structure was designed specifically to handle debris.

By-pass flows are recaptured and sent to the fore bay while screened debris is removed periodically from the system. Typically, about 75 CFS is run through this debris screen but volume can fluctuate depending on the time of year. This debris screen system includes improved emergency by-pass functions to reduce District liability due to canal failures.

Concrete infrastructure with views to the diverted water outlets that will empty into the forebay.

Overview of the site, inlet flume walls not yet built.

Workers from SMF installing the screen.

Workers from SMF installing the taper wall.

Downstream view showing the taper wall in the background.

Upstream view of the screened water flowing into the attenuation bay.

This screen features a second screening (of the bypass water). This water is also used for hydro power production, since there is no need for return to the canal.

Overhead view, showing the unusual taper ratio used for this screen.

This structure was designed specifically to handle debris, as the water at the point of diversion has already been screened for fish.

In October of 2010, FID installed a custom farmers screen just upstream of the fore bay of their penstock in order to manage debris that accumulates in their conveyance canal.

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