The Nimbus Fish Hatchery in Gold River has closed its visitor center, parking lot and several fish ponds, also known as raceways, due to maintenance and contract issues. The California Department of Fish and Wildlife announced the closures in a Facebook post, stating that the temporary shutdown would not affect hatchery operations. The facility is located at 2001 Nimbus Road, just off Hazel Avenue. The closures stem from needed repairs to the site’s heating, ventilation and air conditioning system, along with “ongoing contract negotiations,” according to the department. Fish and Wildlife officials expect to reopen the public areas in September, following what they described as the “slow summer season.” The hatchery, which raises Chinook salmon and steelhead for release into the American River, typically offers public tours and school visits through its visitor center.