The U.S. Army Corps of Engineers, in cooperation with the Lower Brule Sioux Tribe, will hold an open house on Thursday, April 26 from 5 to 7p.m. at the Oacoma Community Center, 100 E. 3rd Street in Oacoma, SD to seek comments on potential opportunities to address erosion that is threatening the town of Lower Brule. There will be a brief, formal presentation at 5:30 p.m.