@untamed.colorado: Colorado Once Built The World’s Tallest Dam Colorado once built the tallest dam in the world. 🏔️ Cheesman Dam on the South Platte River was finished in 1905 at 221 feet above the streambed, after its first dam was swept away by a flood in 1900. It held the title for seven years, until 1912, and its granite wall still holds back the water today. 💧 Would you trust a wall this old with your water? Cheesman Dam Cheesman Reservoir South Platte River Denver Water Colorado dam history tallest dam in the world 1905 Colorado granite masonry dam Walter Cheesman Historic Civil Engineering Landmark Jefferson County Colorado Colorado engineering history Denver water supply Colorado reservoirs Colorado 1900 dam failure Colorado hidden history #CheesmanDam #SouthPlatteRiver #DenverWater #ColoradoHistory #untamedcolorado

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Thursday 05 November 2026 14:20:35 GMT