The west end of the spillway section joins the embankment section by means of a concrete abutment carried to bed rock and protected by wing walls which are supported by steel sheet piling. The area of the surface is about 360 acres,indicating a capacity of 2650 acre feet, of which 1550 acre feet is considered available for generating power. The reinforced concrete substructure forming the equipment foundations supports the reinforced concrete surge chamber and power house. The tailrace, formed by an excavation in the riverbank, is protected on either side by concrete retaining walls extending from the powerhouse substructure to the stream. The generating equipment consists of two Allis-Chalmers vertical generators, rated at 1875 KVA capacity each, driven by S. Morgan Smith water wheels with 60 inch adjustable blades, rated at 2030 HP each, operating at 327 RPM under an effective head of 40 feet.
Suitable equipment is provided for the automatic control of the intake gates and other equipment.
To secure flowage rights in connection with the Niangua Hydraulic Generating Station, it was necessary to purchase a number of tracts of farm land aggregating 417 acres. Rights had to be obtained on land from seven owners and the water rights from several interests involving thirty sections of land in Laclede and Camden Counties. The company owns and maintains storehouses, operator's cottages, electric distribution and water systems, and other facilities considered necessary to the operation of the generating station. Plant production is limited to a peak capacity of 2,400 kW and annual production of 7,500,000 kWh to over 12,000,000 kWh, depending on useable water flow. Operation of the plant is now integrated into the requirements of Associated Electric Cooperative of Springfield, Missouri.