sentences:  The maximum elevation on the floor of the valley is 987 feet (300.8 m) above sea level.The "Browns Valley Dike" at the south end of Lake Traverse is at the same elevation; this structure was built to reduce the likelihood of flooding south across the continental divide.At 983.9 feet (299.9 m), that divide is lower than the level of the dike, and flooding at Lake Traverse has the potential to drain over the Browns Valley Dike into the Minnesota River watershed.