FARGO, N.D. (AP) — The Agriculture Department says North Dakota farmers and ranchers are preparing for spring flooding.

The agency says in its latest crop, livestock and weather report that that average snow depth statewide at the end of February was 15.6 inches, compared with 17.1 inches at the same time last year.

Only 66 percent of county and secondary roads are open, with 24 percent rated difficult and 10 percent being closed. Road conditions are 40 percent drifted, 20 percent icy and 40 percent dry.

Snow cover protection is rated 58 percent excellent for alfalfa and 53 percent for winter wheat.

Copyright 2011 The Associated Press.