Visual Materials
Powerhouse 8
- Description
- Powerhouse 8 - 42 ton Johnson valve and portion of penstock.
- Date
- 6/7/1921
- Call number
- photCL SCE 02 - 06888
Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108

Visual Materials
Powerhouse #8 - Johnson valve and special reinforced section of penstock in place.
photCL SCE 02 - 07110
Image not available
Visual Materials
Powerhouse No. 8, Part One. Photographs of Dam 6, Camp 34, Camp 38, overview of Powerhouse 8 and penstock, milling Powerhouse 8 draft tube, operator's cottage, forebay, sluicing tailrace, generator floor, switchboard, rocks washed into tailrace after penstock burst, Unit No. 2 at Pelton Water Wheel Co., generator and governor at Powerhouse 8, penstock vent, transformers and bus, station power sets, switchboard, broken penstock, drilling tunnel No. 8, repaired penstock, steel forebay, Camp 32 cook house, Johnson Valve, Camp 33.
photCL SCE
Image not available
Visual Materials
Powerhouse No. 8, Part Two. Photographs of Powerhouse 8 diversion, excavation for powerhouse, diversion tunnel construction, interior shots of Powerhouse No. 8 (transformers, control room, turbine-generator assembly, station power, Johnson Valve, turbine runner, crane assembly, scroll case assembly, draft tube); Penstock rupture - ripped Penstock, flattened pipe, damage to powerhouse and other facilities, reshaping pipe, adding reinforcing bands to high stress sections of penstock; Camp 33, operator dormitory, substation, incline construction.
photCL SCE

Visual Materials
Big Creek - Powerhouse #8 (part 2) [Powerhouse #8 - Diversion, excavation for powerhouse, diversion tunnel construction, interior shots of PH #8 (transformers, control room, turbine-generator assembly, station power, Johnson Valve, turbine runner, crane assembly, scroll case assembly, draft tube); Penstock rupture - ripped Penstock, flattened pipe, damage to powerhouse and other facilities, reshaping pipe, adding reinforcing bands to high stress sections of penstock; Camp 33, operator dormitory, substation, incline construction.]
photCL SCE 13 - vol 035

Visual Materials
Big Creek Powerhouse #8 - Surge tank & #2 penstock showing vacuum valve housings.
photCL SCE 02 - 26989

Visual Materials
Big Creek - Powerhouse #8 (part 1) [Powerhouse 8, Dam 6, Camp 34, Camp 38, overview PH8 & penstock, milling PH8 draft tube, operator's cottage, forebay, sluicing tailrace, generator floor, switchboard, rocks washed into tailrace after penstock burst, Unit #2 at Pelton Water Wheel Co., generator & governor at PH8, penstock vent, transformers & bus, station power sets, switchboard, broken penstock, drilling tunnel #8, repaired penstock, steel forebay, Camp 32 Cookhouse, Johnson Valve, Camp 33.]
photCL SCE 13 - vol 034