Northern Water earned a mixed scorecard on its troubled $2.7 billion, two-dam supply project in recent months, with the northern Colorado provider lopping an entire dam to cut costs, even as more cities depart the venture. The cities who spent the spring researching whether to stay in or flee the Northern Integrated Supply Project are also hearing distressing news from Northern Water’s other stumbling showcase project, Chimney Hollow reservoir. Towns like Erie now assume the uranium contamination combined with lack of runoff to fill Chimney Hollow mean they won’t be able to sell water from that reservoir to customers for five or six more years, complicating the fundraising they need to pay for their shares of the larger NISP project.