GATE STRUCTURES FOR IRRIGATION CANALS. 
19 
set in a cut in cemented gravel 5 feet deep. The canal below the 
structure is in this same class of material, so that it forms a natural 
paving which does not erode easily. 
The Uinta County Irrigation Co. constructed this system under 
the conditions of the Carey Act. This particular structure was built 
by force account in 1911. The steel gates proper and fittings, which 
were made in Denver, Colo., weigh 5,700 pounds. Cement cost 80 
cents per hundred pounds f. o. b. Opal, a station on the Oregon Short 
Line 60 miles by wagon from the work. Sand, water, and gravel 
"C.+o 
Scobey 
Fig. 2.— Concrete portion of headgate, Highland Ditch Co., Colorado. 
were close at hand and cost nothing but the labor of one handling. 
The cost of the structure was $820. 
HEADING, THE HIGHLAND DITCH CO., COLORADO. 
The heading for the inlet ditch of the Foothills Reservoir, located 
in Boulder County, Colo., about 10 miles from Longmont, is a 
good example of a diversion from a stream which is plentifully paved 
with heavy cobblestones. (Fig. 2.) This paving forms a natural 
