CHEROKEE — Businesses in northwest Iowa are seeing a clear boost in business when construction workers building the Dakota Access oil pipeline arrive in town. Cherokee city manager Sam Kooiker said the difference is clear downtown in the evenings when few parking spots are available. The 1,200-mile pipeline is designed to carry crude oil has drawn opposition from people worried about potential effects on drinking water and tribal land, but the project is moving forward and is about 75 percent complete.