Illinois Valley Flood Watch Posted by Newsroom Staff March 31, 2012 Last Updated: March 31, 2012 When the rain falls hard, we know the Illinois Valley is likely to flood. © 2024 KOBI-TV NBC5. All rights reserved unless otherwise stated. Newsroom Staff March 31, 2012 Previous Article Jon Alexander, D.A. Del Norte, CA. PT. 1 Next Article Flood Watch: Little Butte Creek