The National Weather Service has issued warnings for several Nebraska rivers that have been swollen with runoff from heavy rainfall.

The service has changed its warning for the North Platte River near Mitchell, saying moderate flooding is expected rather than just minor flooding. The river is expected to crest at nearly 9 feet Saturday afternoon. Minor flooding is expected at Lewellen and Lisco.

Warnings for minor flooding also have been issued for the Elkhorn River from Atkinson through O’Neill and the Missouri River in the southeast corner of Nebraska.

The service said Wednesday that a radar-estimated 4 to 7 inches of rain fell since Tuesday afternoon in parts of Hamilton, Polk and York counties, filling tributaries and the Big Blue River, which is expected to spill out of its banks.