Keystone, South Dakota
We left Huron and continued on US14 to Pierre, the capital of South Dakota. Just north of Pierre is Lake Oahu which is an earth dam across the Missouri. It was built in the same era and similar way to Lake Eildon in Victoria, but is several times the capacity for storage and power generation with a shoreline of over 3,500 km compared to Eildon with less than 600 km when full. The dam extends to Bismark in North Dakota so effectively connects the two state's capit...