sentences:  At the south end of the gap, the Big Stone Lake reservoir pool is maintained at 967 feet (294.7 m), and it has recently flooded to over 975 feet (297.2 m).The Little Minnesota River upstream and at a higher elevation near the divide has flooded to a level where it drained across that divide into Lake Traverse.While the natural state of the area has been altered by the dike and control structures on the two lakes, interbasin flooding did occur prior to construction of those improvements.