The first notable water impoundment on the South Platte is Antero Reservoir. Kennecott now says it can keep mining without expanding its tailings impoundment. In central Bend, the river enters Mirror Pond, an impoundment behind Newport hydroelectric dam. There is one major impoundment (dam), Stevens Creek Reservoir at of elevation. The river then reaches the Federal Dam in Troy, marking an impoundment of the river. The dam's impoundment, Prado Flood Control Basin, was designed to handle a 70-year flood. The reservoir at Little Blue Run is the country's largest coal ash impoundment. Vehicles used in such manner are subject to mandatory immobilization or impoundment. The Karun flows southwest into the impoundment of Masjed Soleyman Dam (Karun-2), then turns northwest. They can be categorized into three different types; impoundment, diversion and pumped storage. This impoundment of the Brazos through Waco is locally called Lake Brazos. The towed vehicle is taken to an impoundment lot. The Climax tailing impoundment now covers several square miles. It included initially an impoundment of the Warwick River in western Warwick County. The full impoundment of Lake Lure was completed in 1927.