The Philly Watersheds Blog would like to take a siesta from the incessant posting of spokesdog photos to direct your attention toward a recent post on City Paper's Naked City blog. Writer Isaiah Thompson asks PWD's Chris Crockett and Adam Levine: What's the story behind the little island in the middle of the Schuylkill?

Peter's Island, as the little mound turns out to be named (even on Google Maps), has left a surprisingly faint trail in Philly history, considering how long it's been there. Illustrations of it date back at least to the early 1800s (in them, it looks considerably less ominous than it does now). By the mid-20th century, the island had actually ceased to be an island at all, according to Adam Levine, a historical consultant for the Philadelphia Water Department who runs the website PhillyH2O.org. A mountain of sludge — the remnants, Levine says, of a century of coal mining that had washed its way to Philly — had simply extended the river's western bank all the way to the island. It remained a peninsula until some time in the 1950s, when the western channel was dredged back into existence, and the sludge pumped 11 miles southwest to create land in Eastwick, near the airport.

Thompson also discovers firsthand the large population of xenophobic geese living on the island. Check out the whole story  here.

Mill Creek Sewer between 47th and Haverford

As you walk on many of Philadelphia's sidewalks, beneath your feet is a hidden world of streams that once crisscrossed the city. Join PWD historian Adam Levine on Thursday, Feb. 16 from 6:30 - 8:30 p.m. at the Temple Gallery at the Tyler School of Art for a fascinating illustrated lecture including rare artwork and artifacts that uncover part of Philadelphia's history few people ever think about—the drastic changes made in the city's landscape since its founding in 1682.

Levine has been digging into the history of the city's sewers and drainage systems since 1998, and his talk will focus on the systematic obliteration of hundreds of miles of surface streams. Buried deep underground in pipes as large as 20 feet in diameter, these former streams became main drainage arteries in the city's 3,000-mile sewer system. These massive alterations to the landscape have had environmental repercussions that are still being felt today. This lecture is guaranteed to reveal a side of Philadelphia you have never seen and change the way you think about our sprawling urban environment.

This event is free, but you must register to reserve your seat.

Tonight's scheduled lecture has been postponed. Rescheduled date will be announced soon.

As you walk on many of Philadelphia’s sidewalks, beneath your feet is a hidden world of streams that once crisscrossed the city. Join us tomorrow night, Tuesday September 27 at 7:00 p.m. at the Meadowood Retirement Community in Worcester for a free, fascinating illustrated lecture that will uncover part of Philadelphia’s history that few people ever think about: the drastic changes made in Philadelphia’s landscape since its founding in 1682. Historian and archivist Adam Levine (pictured sewer-spelunking, above) has been digging into the history of the city’s sewers and drainage systems since 1998, and his talk will focus on the systematic obliteration of hundreds of miles of surface streams. Buried deep underground in pipes as large as 20 feet in diameter, these former streams—some of which had watersheds that covered thousands of acres—became main drainage arteries in the city’s 3,000-mile sewer system. These massive alterations to the landscape, undertaken over two centuries, have environmental repercussions that are still being felt today. This lecture is guaranteed to reveal a side of the Philadelphia you have never seen, and change the way you think about cities in general.

From the desk of Philadelphia Water Department historical consultant Adam Levine:

Image: Temple University Urban Archives

Most people don't realize that much of the lower part of South Philadelphia was once covered by tidal marshes. South Philly was once called “the Neck” because of the shape of the area (look at a map of the city if you cannot picture this easily), and about six square miles of the neighborhood were covered by marshland laced by both natural tidal creeks and man-made drainage canals.

Besides the canals, miles of dikes were built along both the Delaware and Schuylkill riverfronts, beginning in the 18th century. The dikes kept the land out of reach of the high tide, which allowed it to be used for growing hay and other crops well into the 20th century. Millions of cubic yards of fill were used to raise these lowlands, a process that began in the early 20th century and continued for more than 50 years. Material used for the filling came from various sources, including city refuse, dredge spoils from the Delaware and Schuylkill river dredging projects, and material excavated during construction of the Broad Street subway.

In 1920, Christopher Morley painted a vivid verbal picture of this area in his wonderful essay. The accompanying map and photographs are used by permission of Temple University Libraries Urban Archives Bulletin Collection.

Click here for a 1927 image from the Evening Bulletin with photos and captions of Stonehouse Lane and the canals that once wound below Oregon Avenue.