Category Archives: Uncategorized

Dr. Ryan Frederiks joined the lab this month after completing his Ph.D. at the University of Delaware.  Ryan will be working on monitoring and modeling road salt in urban systems, among other urban hydrology projects. We installed sensors near a … Continue reading →

I worked with Ryan Neuman of the TTF Watershed organization to install some water level loggers in a large infiltration chamber recently installed in Alverthorpe Park in Abington. (That’s Tookany-Tacony-Frankford watershed, a stream that changes names twice along its flowpath.)  … Continue reading →

Josh Caplan from Landscape Horticulture and I went out to a new basin along I-95 to take some drone photos.  These photos help us monitor plant health in the basin.  This basin will use meadow grasses for bioinfiltration.  It collects … Continue reading →

I was interviewed on KYW radio to talk about how sinkholes form.  Recent sinkholes in the King of Prussia area have closed Route 202.  This site is near my urban spring monitoring sites — springs and sinkholes often go together. … Continue reading →

Ashleigh Kirker and I attended the 2023 Gordon Catchment Science conference in Andover, NH.  It was an amazing set of talks and posters with plenty of time to talk to other attendees.  Ashleigh presented a poster on her land use … Continue reading →

Dan Bain of University of Pittsburgh and his students visited the Pennypack Urban CZ site to collect soil samples.  We had to work through the air coming down from the Canadian wildfires, but we got samples from all four geologic … Continue reading →

Ashleigh Kirker and I recently published a paper on why percent impervious cover doesn’t predict runoff.  Check it out in the Journal of Hydrology.

Gina Pope (advisor Jon Nyquist) and Ashleigh Kirker (Toran lab) both successfully defended their PhD dissertations this spring.  Congratulations Dr. Pope and Dr. Kirker!

The third Carbonate Critical Zone RCN conference was held in Fayetteville Arkansas.  Students and faculty visited the Savoy Research center and saw some amazing weathered karst surfaces.  My undergrad research assistant, Erin Spross, was among the students who attended the … Continue reading →

Our NSF critical zone hosted visitors from Toronto Metropolitan University, University of Delaware, and Lafayette College to tour Pennypack Creek (Philadelphia), Dead Run (Baltimore) and Northwest Branch (DC area).