Photograph of the headgate on the Imperial Canal at Sharps heading, California, ca.1910, the point where the water is distributed into the canals. The river is channel by opening valves in the dam controlled by 10 wheels on top of the structure. Wood for construction lays on the both banks. Part of a ladder is visible at right. Sets of wood stairs lead up to the valve controls.; "About 50 miles from the breach of the prehistoric Alamo River which is used as a main canal by the California Development Company is Sharps -- the point where the water is distributed into the canals of the Imperial Region. This is one of the headgates the overflow from which enters the upper part of the Alamo as waste water and empties into the Salton Sea 50 miles north."
California Historical Society Collection, 1860-1960
