Historic Photographs

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California

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Shingletown vicinity

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Rock Wall, North side of Battle Creek Canyon, Shingletown, Shasta County, CA



B&W Photos

HB142600
Overview Of Rock Wall And 1960 Pipeline Breach, Looking Southwest

HB142601
View Of South Elevation, Showing Prominent Curve Of The Longest Segment, Looking Northwest

HB142602
Overview Of Structure, Showing Most Extensive Completed Wall Segment, Looking North-northwest

HB142603
Detail View Of Cross Section Of Structure, Showing Exterior Facings Lined With Rubble Backing And Earth Infill, Looking East

HB142604
View Of Exterior Facings, South Elevation, Illustrating Random Coursing That Uses Unsquared, Irregular Basalt Stone With Smaller Fragments Snecked Into The Jointing, Looking North

HB142605
Detail View Of Coursing, South Elevation

HB142606
Detail View Of Cross Section Of Structure, Showing The Tapered Sides Of A Nearly Completed Wall Section, Looking East

HB142607
View Of Cross Section Of The Easternmost Wall Segment That Shows The Trenching And 1960 Pipeline Corridor Between The Wall Segments, Looking West-northwest

HB142608
View Of Partially Complete Wall Where It Crosses The Incised Drainage, Looking West

HB142609
View Showing Two Buttresses On The North Elevation, Which Support A Deep Curve In The Longest Section Of The Wall, Looking South-southwest

HB142610
View, Looking West-northwest, Showing Structural Breach In Wall Caused By Marshy Conditions

HB142611
Detail View Of Cross Section Of Structure, Showing The Width Of The Facings And Backings That Formed The Base Of The Wall At The Western End, Looking Northeast


Data Pages


Photo Caption Pages


Item Title


Location
North side of Battle Creek Canyon, Shingletown vicinity, CA

Find maps of Shingletown, CA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CA-135
Building/structure dates: 1907 initial construction
Building/structure dates: 1907 subsequent work
Significance: The Pacific Power Company Rock Wall is representative of early hydroelectric development efforts along the Battle Creek drainage system of Shasta County, California. The massive native basalt cobble wall is an impressive engineering achievement, constructed with traditional masonry techniques common to the era. The structure combines strength and durability of form, with an aesthetically finished presentation.

Related Names
Waller, R. P.
Strutt, J. H.
Bly, Leon


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. OVERVIEW OF ROCK WALL AND 1960 PIPELINE BREACH, LOOKING SOUTHWEST
2. VIEW OF SOUTH ELEVATION, SHOWING PROMINENT CURVE OF THE LONGEST SEGMENT, LOOKING NORTHWEST
3. OVERVIEW OF STRUCTURE, SHOWING MOST EXTENSIVE COMPLETED WALL SEGMENT, LOOKING NORTH-NORTHWEST
4. DETAIL VIEW OF CROSS SECTION OF STRUCTURE, SHOWING EXTERIOR FACINGS LINED WITH RUBBLE BACKING AND EARTH INFILL, LOOKING EAST
5. VIEW OF EXTERIOR FACINGS, SOUTH ELEVATION, ILLUSTRATING RANDOM COURSING THAT USES UNSQUARED, IRREGULAR BASALT STONE WITH SMALLER FRAGMENTS SNECKED INTO THE JOINTING, LOOKING NORTH
6. DETAIL VIEW OF COURSING, SOUTH ELEVATION. LARGER ROCKS ARE SCRABBLED TO GIVE THE APPEARANCE OF A FINISHED SURFACE, LOOKING NORTH
7. DETAIL VIEW OF CROSS SECTION OF STRUCTURE, SHOWING THE TAPERED SIDES OF A NEARLY COMPLETED WALL SECTION, LOOKING EAST
8. VIEW OF CROSS SECTION OF THE EASTERNMOST WALL SEGMENT THAT SHOWS THE TRENCHING AND 1960 PIPELINE CORRIDOR BETWEEN THE WALL SEGMENTS, LOOKING WEST-NORTHWEST
9. VIEW OF PARTIALLY COMPLETE WALL WHERE IT CROSSES THE INCISED DRAINAGE, LOOKING WEST
10. VIEW SHOWING TWO BUTTRESSES ON THE NORTH ELEVATION, WHICH SUPPORT A DEEP CURVE IN THE LONGEST SECTION OF THE WALL, LOOKING SOUTH-SOUTHWEST
11. VIEW, LOOKING WEST-NORTHWEST, SHOWING STRUCTURAL BREACH IN WALL CAUSED BY MARSHY CONDITIONS. SORTED AND ASSEMBLED NATIVE BASALT COBBLES USED FOR BUILDING MATERIAL APPEAR IN BACKGROUND
12. DETAIL VIEW OF CROSS SECTION OF STRUCTURE, SHOWING THE WIDTH OF THE FACINGS AND BACKINGS THAT FORMED THE BASE OF THE WALL AT THE WESTERN END, LOOKING NORTHEAST


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