Dillon Reservoir - Dillon, Colorado, USA

There’s a whole town at the bottom of this lake. Old Dillon sat in the valley until Denver needed more water. The town was moved uphill, along with more than 300 graves from its cemetery, and the dam was finished in 1963. Today the old townsite lies up to 250 feet underwater.

This is Denver Water’s biggest reservoir. Water from here travels through the 23-mile Roberts Tunnel under the Continental Divide to the other side of the mountains. Because it’s drinking water, and freezing cold, swimming isn’t allowed.

You can still get out on it by boat. At 9,017 feet, Dillon Marina is the highest deep-water marina in North America, and the lake’s yacht club is the highest on the continent too. In winter the water freezes over and people head out onto the ice to fish.

Did You Know? This is the fourth spot the town of Dillon has stood in. It moved more than once to follow the railroads before the reservoir forced it uphill again.

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