Experts say river levels are so low the state’s fish population is stressed — and conditions could cause more fish kills. Meteorologist Jim Lee at the National Weather Service office in Des Moines says there’s not been enough rainfall to replenish rivers.

In many areas, river levels are so low canoeing and kayaking is not recommended because boats would scrape the river bottom. Lee says some of Iowa’s river basins are at 10 percent of normal capacity.

The first frost happens across Iowa during the first half of October and experts say if lakes and waterways were to freeze at these low levels, oxygen levels will be lower — and fish could suffer. Lee says it doesn’t appear weather patterns will change in the next couple of weeks or perhaps even longer.

In July, the Iowa Department of Natural Resources reported nearly 21-thousand Shovelnose Sturgeon had died along a 60 mile stretch of the Des Moines River in southeast Iowa. D-N-R biologists determined the fish kill was caused by low water levels and high-water temperatures. It was the largest fish kill in the region since 2012. In late August, the D-N-R estimates up to five-thousand fish were killed along a 74-mile stretch of the Upper Iowa River in Winneshiek County.