Reservoirs across Idaho nearing or at capacity
By Ruth Brown; Idaho Capital Sun Anderson Ranch Reservoir. The Upper Snake River Basin’s reservoir capacity is nearing its limit as the Portneuf River continues to flood, but the National Weather Service isn’t concerned about spillover from reservoirs in southeast Idaho. Bureau of Reclamation data from Wednesday showed the Henry’s Lake and Grassy Lake reservoirs are at 100% capacity, while most of the reservoirs in the Upper Snake system are between 91 and 98% capacity. Milner Reservoir is only 74% full, and Jackson Lake Reservoir is 71% full. Collectively, the Upper Snake River System is at 88% of capacity, according to the Bureau of Reclamation. There is a minor flood warning in place along the Portneuf River at Pocatello, affecting Bannock County. But Tim Axford, meteorologist at the National Weather…