Skip to content

Portal Powerhouse - Forebay - Looking northeast along 2nd. tangent | Collections | The Huntington

Membership

Donate

Store

OPEN TODAY: 10 A.M.–5 P.M.

Home
Collections
Search
Southern California Edison collection of negatives and photographs
Portal Powerhouse - Forebay - Looking northeast along 2nd. tangent

Visual Materials

Portal Powerhouse - Forebay - Looking northeast along 2nd. tangent

Description: Portal Powerhouse - Forebay - Looking northeast along 2nd. tangent - Portal Forebay dam [prior to any construction]
Type: Visual Materials(Opens in new tab)
Date: 6/24/1955
Call number: photCL SCE 02 - 43269
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

Subscribe to our e-newsletter

About
Accessibility
Land Acknowledgment
Using the Library
Careers
Host an Event
Volunteer
Press
Contact Us
Filming/Photography

Opening Hours

Daily: 10 A.M.–5 P.M.

Closed on Tuesdays

Admission Info and Tickets

1151 Oxford Road
San Marino, CA 91108

Privacy Policy
Social Media Guidelines and User Policy

©2026 The Huntington

Charity Navigator

You might also be interested in

Portal Powerhouse - Portal Forebay
Visual Materials
Portal Powerhouse - Portal Forebay - Reservoir looking north, shows northeast end of dam.
photCL SCE 02 - 43855
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Progress picture forebay dam. View from right abutment looking toward left abutment.
photCL SCE 02 - 43333
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Installing 6" dia. drain in foundation, sluice pipe area, prior to any fill. Note form for concrete cutoff around pipe. One of three installed.
photCL SCE 02 - 43323
Portal Powerhouse - Portal Forebay - Looking west
Visual Materials
Portal Powerhouse - Portal Forebay - Looking west - shows cutting of channel to vertical shaft.
photCL SCE 02 - 43856
Portal Powerhouse - Portal Forebay
Visual Materials
Portal Powerhouse - Portal Forebay - Looking up shaft, shows inlet tunnel intersection with shaft, temporary ladder.
photCL SCE 02 - 43791
Portal Powerhouse - Forebay
Visual Materials
Portal Powerhouse - Forebay - Evidence of bed rock exposed by excavation between Stations 2+00 & 3+00, near the left abutment and along dam axis.
photCL SCE 02 - 43326