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Susquehanna RiverCam Livestream

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Thank you for viewing our livestream of the Susquehanna River just north of Harrisburg, Pa. You are looking west across the river from Susquehanna Township in Dauphin County to Marysville in Perry County and Enola in Cumberland County.



Rockville Bridge

Current and old Rockville Bridges
New 4-track stone bridge next to old iron bridge before demolition.
Photo Courtesy: Railroad Museum of Pennsylvania

Of interest is the iconic Rockville Bridge , said to be the longest stone masonry arch railroad bridge in the world resembling the aqueducts of the Roman Empire. Built from 1900–02 by 800 workers, it’s 3,802 feet long with 48 arches. The Rockville Bridge has withstood many floods including its greatest threat from Tropical Storm Agnes in June of 1972. It is listed on the National Register of Historic Places and designated as a National Historic Civil Engineering Landmark. It remains in use today by Norfolk Southern Railway and Amtrak.


Flows & Flooding

Hydrograph showing Susquehanna River flow at Harrisburg, PA (USGS gage 01570500)
National Water Prediction Service: Hydrograph
Record Flows (cfs)
  1. 1,020,000 (June 24, 1972 -Hurricane Agnes)
  2. 740,000 (March 19, 1936)
  3. 613,000 (June 2, 1889)
  4. 613,000 (May 22, 1894)
  5. 590,000 (September 9, 2011 - Tropical Storm Lee)
Source: nwis.waterdata.usgs.gov