Lake McConaughy Ogallala NE – September 2021 This is Mary Jean’s hometown. Mary Jean’s father built this house (note the MB on the porch railing) in Ogallala. She lived here as a child. Mary Jean’s grandmother (Gramy) lived next door. Mary Jean and her cousins and Aunt Juanita. Lake McConaughy was built over the town of Lemoyne NE, which was Mary Jean’s father’s hometown. In order to facilitate the lake, Lemoyne was dismantled piece by piece. The dam is 162 feet high(deep) and 3.1 miles long. When all the gates are open, the water flows at 7,000 cubic feet per second, or over 420 thousand gallons a minute. The large structure close to the dam is called the Morning Glory. It is the flood control tower. These lines show how low the water in the lake is. Lake McConaughy is 22 miles long and the normal depth is 142 feet. It is a very popular spot for water and beach activities during the summer.