Plate 
A, Concrete pipe manhole and surface-water inlet. B, Sections of corru- 
gated metal manhole. C, Cradle for small tile in soft ground, Palisade 
drainage district, Mesa County, Colo. D, Corrugated pipe outlet for 
closed drain. E, Outlet structure and surface-water inlet, subdistrict 
No. 7 of drainage district No. 3, Yakima County, Wash. F, Automatic 
gate outlet. G, Drop, Millard County, drainage district No. 3, Utah. 
H, Timber lining and drop, (looking downstream). Sulphur Creek waste- 
way, United States Bureau of Reclamation, Yakima project. Wash. 
I, Surface-water inlet near Brownsville, Tex. J, Surface-water inlets 
and irrigation flume, Ada County, drainage district No. 2, Idaho 
