Not usually in the summer. It is a beautiful little campground!!
Flooding is possible, but extremely unlikely during the summer months. The time between a heavy rain and the river rising is several days. Should this ever happen in the camping season, the flood warning would come days in advance. It would be a once in a hundred year event to flood the campsites in summer. However, in spring flooding is more common and we do not open until the snow is melted off and the river has started to recede.
We stayed there all of last summer. It can be wet during periods of heavy rain, but we never experienced flooding. The river doesn't really flood in that area.
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