NebraskaÃ¢ÂÂs largest reservoir, Lake McConaughy offers outstanding boating, fishing, swimming and camping. The area boasts beautiful white sand beaches perfect for swimming, building sandcastles or just soaking up the sun. The beach is also a popular spot for camping, as tent campers can pitch their tent right on the waterÃ¢ÂÂs edge. All together, the area totals more than 40,000 acres, 34,700 of which are water acres, and has more than 100 miles of shoreline. Alcohol is prohibited at Lake McConaughy.