BISMARCK — Low water levels on Lake Sakakawea mean boat ramps that have been submerged for nearly 20 years will likely be needed to access the reservoir next year. Lake Sakakawea stood at 1,827.3 feet of elevation on Sunday. READ MORE“We have not necessarily seen an uptick in business because of the low water,” Ritts said. Ritts said resorts had plenty of bookings for this summer, but if they lose their water access, those visitors are less likely to return next year. Interactive mapThe U.S. Army Corps of Engineers maintains an interactive map showing open and closed boat ramps on Lake Sakakawea.