When the Garrison Dam was built 50 years ago on the Missouri river, it created a lake nearly 200 miles long. Lake Sakakawea became a thriving fishery that attracts anglers from around the country. Visitors to the lake spend millions of dollars each year. But many fear low water will lead to economic ruin for businesses around Sakakawea. Dan Gunderson continues our Mainstreet Radio series, "Water Wars."