National and State Register
Grand River Ditch / Specimen Ditch
Larimer County
Often considered to be the largest early engineering project designed to divert water from the western slope of the Rocky Mountains to the South Platte River, the 14.3 mile long Grand Ditch was first used to divert water across La Poudre Pass by the Larimer County Ditch Company in 1890.
Over the years, the ditch was extended south along the Never Summer Range. In 1936, the Water Supply and Storage Company extended the ditch to Bear Creek, thus completing its construction. Listed under Rocky Mountain National Park and the Historic Park Landscapes in National and State Parks Resources Multiple Property Submissions.
This site continues into Grand County.
National Register
Address
Rocky Mountain National Park, Grand Lake vicinity
Site Number
5LR.10523 / 5GA.301