 If you've noticed the Cheyenne River stagnating in West Fargo, there's a reason. Engineers with the Southeast Cass Water Resource District say the Cheyenne diversion structures have been closed for about a month. That's because the flow exceeded 800 cubic feet per second. And because the river is cut off from the upstream flow, the water is just sitting and its temperatures are rising. But engineers say they are taking actions to improve conditions.