FARGO, N.D. (AP) — The people of Fargo are bracing for a Red River crest that could be one of the highest on record.

The National Weather Service says the Red will likely peak between 39 and 40 feet on Saturday night or Sunday morning.

Construction of sandbag dikes wrapped up Friday in Fargo and neighboring Moorhead, Minn. Scores of volunteers placed more than 1 million sandbags along neighborhoods in both cities.

Fargo officials were to decide Saturday morning if more sandbags were needed to raise levees higher.

The Red River Valley has had three straight years of major flooding. The 2009 flood had a record crest of 40.84 feet.

More than 600 National Guard members from North Dakota and Minnesota are pulling flood duty on both sides of the Red.