Flooding In Sight

 

“The Equinoctial Flood. View of the Schuylkill River at Philadelphia, October 4th, 1869.” The boathouses and the gazebo of the Fairmount Water Works are visible in the background, but the dam is hidden beneath the roiling water. CAPTION: “The Equinoctial Flood. View of the Schuylkill River at Philadelphia, October 4th, 1869.” The Boathouse Row, Lemon Hill and the gazebo of the Fairmount Water Works are visible in the background, but the dam is hidden beneath the roiling water. [SOURCE: Philadelphia Water Department Historical Collection, Frank Leslie’s Illustrated Newspaper, October 23, 1869

Flooding is on everyone’s mind today, as we see frightening pictures of the Atlantic City boardwalk being broken up by the storm surge of Hurricane Sandy, and this more than eight hours before the storm is due to make landfall. What effects the storm will have on Philadelphia’s two rivers, both of which are tidal, remains to be seen. I am not a meteorologist, and no expert in regards to storm surges or hydrology. My field is history, and so that is what I offer on this ominous day.

Of the city’s two rivers, the Schuylkill River is narrower, with a steeper valley, and the most prone to overflowing its banks. The worst flood in the river’s recorded history occurred on October 4, 1869, after a summer-long drought was broken by days of rain. The torrent of water rose eleven feet over the Fairmount Dam, reaching within a few feet of the wire suspension bridge that spanned the river below the Fairmount Water Works, about where Spring Garden Street crosses today. Whether that record remains standing after Hurricane Sandy passes remains to be seen. To keep track of the river, the USGS has an instantaneous stream gauge, statistics from which can be viewed at HERE.

As of this writing, the river is rising.

Depending on how much rain Sandy brings, and how hard and where it falls, this may also be a day that some of the many streams in the city that have been channeled into sewer pipes might make their way back to the surface, as the sewers fill up and overflow. If you see a river flowing down the street, please give it the same respect as any overflowing “living” stream and stay away.

About the author

Adam Levine has done extensive research since 1998 into the historical topography of Philadelphia, mostly as a consultant to the Philadelphia Water Department. As part of this work, he manages the PWD Historical Collection, and also maintains an extensive website of watershed and water supply material at www.phillyh2o.org. In a related career path, he writes about gardening, and is the author of many articles and four books, including A Guide to the Great Gardens of the Philadelphia Region (Temple, 2007).  In another life, he worked full time as a journalist, both freelance and as a staff writer for the Gloucester County Times in Woodbury, NJ.



Leave a Reply

Comment moderation is enabled, no need to resubmit any comments posted.

Recent Posts
Archeologists Dish Up Dirt On Philly History Under I-95

Archeologists Dish Up Dirt On Philly History Under I-95

March 28, 2017  |  Vantage

Contributor Jared Brey takes us under the overpass and down in the trenches of the 95 Revive archeological excavation where field workers are piecing together centuries of lost Philadelphia history > more

The Gallery: Finally The Destination Ed Bacon Hoped For?

The Gallery: Finally The Destination Ed Bacon Hoped For?

March 23, 2017  |  Vantage

PREIT's transformation of The Gallery into an upscale shopping outlet promises to be the suburban-minded downtown destination that the first mall failed to deliver. Contributor Chris Giuliano takes a look at the redevelopment of East Market and Edmond Bacon's original plan. > more

New Life For An Old Coal Country Outpost In Society Hill

New Life For An Old Coal Country Outpost In Society Hill

March 20, 2017  |  The Shadow Knows

The Shadow takes a stroll down to Society Hill where business is stirring at an old 19th century coal company headquarters after 12 years of vacancy > more

New Exhibition Gives Movement To The Philadelphia School

New Exhibition Gives Movement To The Philadelphia School

March 17, 2017  |  Buzz

Two fans of Modernism re-evaluate architectural history with the exhibition, "What Was the Philadelphia School?" > more

Tracking The Evolution Of Industry At 34th And Grays Ferry

Tracking The Evolution Of Industry At 34th And Grays Ferry

March 16, 2017  |  Vantage

The site of Penn's new riverside research campus has a long, decorated history of industrial enterprise. Contributor Madeline Helmer dives deep into the backstory > more

Emergency Excavation In Old City Reveals Lack Of Oversight

Emergency Excavation In Old City Reveals Lack Of Oversight

March 15, 2017  |  News

The last-minute salvage excavation of First Baptist Church Burial Ground in Old City has the archaeological community up in arms. Is the City or the developer to blame? John Henry Scott reports > more