Susquehanna River Level Sunbury This information shows the Susquehanna River level in Sunbury, PA at a glance. See the current river level, flood stages and level predictions for the Susquehanna River level in Sunbury, PA. This information is redistributed from Weather.gov and we make no claims as to it’s accuracy, freshness, or reliability. This data should not be used as a determination of river or water safety during boating, fishing or other water activities. We make no claims that would constitute an interpretation of water safety and this data should be used for entertainment purposes only.