S-13A Structure Improvements and Hydraulic DesignTechnical Publication ERA-463;
Appendix A Hydraulic Model for Flow Regulation through the S-13A Structure through the S-13A Structure
; "January 2008."
Construction project in forestKings Mountain National Military Park; National Park ServiceVickie Revels, YCC leader, Mark Woods, Ranger, Chris Schofield at gathering
Workers digging trench for water line, Metcalf Bottoms, TennesseeGreat Smoky Mountains National ParkWork Order No. B-44 GRSM Digging trench for 2-inch water line Completion report photo.Metcalf bottoms comfort stations, II-C-MB-7357, Physical Facilities - Campgrounds and Picnic Areas - Metcalf Bottoms
Bridge Construction, Newfound Gap Road, circa 1934Great Smoky Mountains National ParkBridge Construction; Newfound Gap Road; II-F-(4)-NFG-16204, Physical Facilities - Footlogs and Bridges - Bridges on Newfound Gap Road.
View of trench and wood straightedge to support pipe, Metcalf Bottoms, TennesseeGreat Smoky Mountains National ParkWork Order No. B-44 GRSM Trench and wood straightedge to support pipe in disposal field. Completion report photo,Metcalf bottoms sewer system, II-C-MB-7538, Physical Facilities - Campgrounds and Picnic Areas - Metcalf Bottoms
Machines at construction siteEverglades National Park; National Park ServiceClose up view of construction site, bulldozer and two men in background; 23 Mar 1951; "Ditching for piers".