Elevation contour lines for Lake McConaughy, Nebraska

The U.S. Geological Survey, in cooperation with The Central Nebraska Public Power and Irrigation District (CNPPD), conducted a study that used bathymetric and...美国地质调查局（U.S. Geological Survey）与内布拉斯加州中部公共电力与灌溉区（Central Nebraska Public Power and Irrigation District，简称CNPPD）合作开展了一项采用水深测量（bathymetric）及……的研究。