Test drilling and geologic data indicate that there are two potential aquifers in the Belcourt, N. Dak. area capable of supplying a sufficient quantity of ground water for the city of Belcourt. The Fox Hills aquifer, located about 3 miles (4.8 kilometres) west of Belcourt, could yield a sufficient quantity, as much as 500,000 gallons per day (1,900 cubic metres per day), of ground water for Belcourt, but the quality is unsuitable for a public supply. The Shell Valley aquifer, located about 5 miles (8 kilometres) southwest of Belcourt, appears to contain the quantity and quality of ground water required for the city of Belcourt municipal supply.