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Continue to ChatBoulder and Left Hand Ditch Map - Boulder County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-202590-boulder-and-left-hand-ditch
Boulder and Left Hand Ditch Map - Boulder County, CO https://www.yellowmaps.com/usgs/topo.cfm?map=co-202590-boulder-and-left-hand-ditch