Acequia is an unincorporated community located in Douglas County, Colorado, United States. History A post office was in operation at Acequia between 1874 and 1900. Acequia is a Spanish word meaning "canal" or "channel", so the name was likely in reference to the nearby High Line Canal. Geography Acequia is located at (39.5235994,-105.0280398). References Unincorporated communities in Douglas County, Colorado Unincorporated communities in Colorado