Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Visual Materials
Big Creek Powerhouse #4 - Looking from Outlet Portal of Tunnel #1 across Willow Creek. Intake Portal of Tunnel #2 in background.
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Visual Materials
Big Creek Powerhouse #4 - Construction pictures taken by Dam & Tunnel office. [site for powerhouse 4 viewed from lower portal of Tunnel #2 - graded area on left is for Switchyard]
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Visual Materials
Big Creek Powerhouse #4 - Construction pictures taken by Dam & Tunnel office. [View from Power Tunnel #2 intake portal to Power Tunnel #1 outlet portal at Willow Creek Crossing.]
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Visual Materials
Big Creek Powerhouse #4 - Facing up portal at outlet of Tongridge Tunnel.
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Visual Materials
Big Creek Powerhouse #4 - Construction pictures taken by Dam & Tunnel office. [diversion tunnel outlet portal]
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Visual Materials
Big Creek Powerhouse #4 - Construction pictures taken by Dam & Tunnel Office. [site of Tunnel #1 outlet portal]
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