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Hume

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Hume Lake Dam, Sequioa National Forest, Hume, Fresno County, CA



B&W Photos


Data Pages


Drawings


Photo Caption Pages


Item Title


Location
Sequioa National Forest, Hume, CA

Find maps of Hume, CA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CA-16
Unprocessed field note material exists for this structure (FN-13).
Building/structure dates: 1950 subsequent work
Building/structure dates: 1908 initial construction
Significance: Hume Lake Dam was the world's first reinforced a concrete multiple arch dam. Built to impound reservoir for the Hume-Bennett Lumber Company, today it is the only major surviving structure representing the Kings River Basin's redwood logging industry. It is significant for its innovative use of reinforced concrete and for its association with an important regional industry.

Subjects
Recreation
Dams
Hydraulic Engineering


Related Names
Eastwood, John S.
Hume-Bennett Lumber Company
US Forest Service
State Of California
Griffin, Douglas L., Field Team
Frear, Richard K., Photographer
Jackson, Donald C., Historian


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. GENERAL VIEW OF DAM LOOKING UPSTREAM (SOUTH) FROM 'DRYER HILL'.
2. GENERAL VIEW OF DAM LOOKING UPSTREAM (SOUTH).
3. VIEW LOOKING UPSTREAM WITH DAM IN BACKGROUND AND BOLTS ASSOCIATED WITH FORMER TIMBER FLUME IN FOREGROUND.
4. VIEW LOOKING UPSTREAM AND SLIGHTLY WEST SHOWING CENTER SECTION OF DAM.
5. VIEW LOOKING UPSTREAM AND SLIGHTLY EAST SHOWING CENTER SECTION OF DAM (BUTTRESSES 6, 7, 8).
6. VIEW LOOKING UPSTREAM AND SLIGHTLY WEST SHOWING CENTER SECTION OF DAM (BUTRESSES 4, 5, 6, 7).
7. VIEW LOOKING UPSTREAM AND TO THE EAST SHOWING BUTTRESSES 10 AND 11.
8. VIEW LOOKING UPSTREAM AND TO THE WEST SHOWING BUTTRESSES 8, 9, 10.
9. DETAIL VIEW LOOKING UPSTREAM AT THE DEEPEST SECTION OF THE DAM (BUTTRESSES 7 AND 8).
10. DETAIL VIEW OF BUTTRESS 8 LOOKING EAST. THE IMPRESSIONS OF THE WOODEN FORMS ARE VISIBLE ON THE CONCRETE.
11. DETAIL VIEW OF BUTTRESS 8 AND HALF OF ARCH 7 SHOWING THE UPSTREAM INCLINATION OF THE ARCH. ALSO VISIBLE IS A FORMER WASTE-GATE IN THE ARCH THAT IS NOW FILLED WITH CONCRETE.
12. DETAIL VIEW OF BUTTRESS 8 AND HALF OF ARCH 7. THE IMPRESSIONS OF THE WOODEN FORMS ARE VISIBLE ON THE CONCRETE. ALSO VISIBLE IS THE PLACEMENT OF THE DAM DIRECTLY ON BEDROCK.
13. DETAIL VIEW OF BUTTRESS 4 SHOWING THE RESULTS OF POOR CONSTRUCTION WORK. THOUGH NOT A SERIOUS STRUCTURAL DEFICIENCY, THE 'HONEYCOMB' TEXTURE OF THE CONCRETE SURFACE WAS THE RESULT OF INADEQUATE TAMPING AT THE TIME OF THE INITIAL 'POUR'.
14. DETAIL VIEW OF BUTTRESS 4 SHOWING THE RESULTS OF INADEQUATE TAMPING. THE SIZE OF THE GRANITE AGGREGATE USED IN THE DAMS CONCRETE IS CLEARLY SHOWN.
15. DETAIL VIEW OF SAWMILL POWER HOUSE FOUNDATION (CONSTRUCTED IN 1909) SHOWING THE WIRE-ROPE AND RAILROAD RAILS USED AS REINFORCEMENT IN THE CONCRETE. THIS SAME MODE OF REINFORCEMENT WAS USED IN THE DAM.
16. DETAIL VIEW OF POWER HOUSE FOUNDATION SNOWING WIRE-ROPE REINFORCEMENT IN THE CONCRETE.
17. DETAIL OF ORIGINAL 12' OUTLET VALVE BETWEEN BUTTRESSES 5 AND 6.
18. GENERAL VIEW OF UPSTREAM SIDE OF DAM LOOKING WEST.
19. DETAIL VIEW OF UPSTREAM SIDE OF DAM LOOKING WEST. THE REINFORCED CONCRETE COPYINGS ON TOP OF THE ARCHES WERE ADDED IN THE 1950'S.
20. GENERAL VIEW LOOKING NORTH TOWARDS DAM FROM ACROSS THE RESERVOIR.
21. GENERAL VIEW OF RESERVOIR LOOKING SOUTH.
22. photocopy of photograph (source unknown, photographer & date unknown JOHN S. EASTWOOD


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