The Childs Development includes a diversion dam in Fossil Creek just below the Irving plant to divert the water of Fossil Creek into the forebay of the Childs flume; a forebay; a conduit about 4 1/2 miles long; a regulating reservoir known as Stehr Lake; a pressure tunnel about 4,888 feet long; a concrete pipe about 1,394 feet long; a concrete surge tank; a penstock about 4,635 feet long; a powerhouse on the Verde River containing three 3,000-horsepower water wheels each connected to an 1,800-kilowatt generator; a short tailrace; a step-up substation; two 69 kilovolt transmission lines about 200 feet long, extending from the step-up substation to a switchyard; access roads; and appurtenant facilities.

Irving Hydroelectric Power Plant

 The Irving Development includes a diversion dam in Fossil Creek; a conduit about 3 1/2 miles long; a surge tank; a penstock; a powerhouse on Fossil Creek containing a 2,100-horsepower turbine connected to a 1,600-kilowatt generator; a tailrace discharging into the forebay of the Childs Flume; a step-up substation; a 69kilovolt transmission line about 6.6 miles long, extending from the step-up substation to a switchyard; access roads; and appurtenant facilities.