The Wissahickon Hasn't Changed in Years. This September, It Did.

Walk Forbidden Drive on any given Saturday and it feels like it hasn't moved in decades. Same gravel underfoot. Same creek running alongside. Same covered bridge a mile or two up depending on which trailhead you started from. Regulars talk about the park the way people talk about a favorite chair: comfortable because it never changes.

That's the version of the Wissahickon most people carry around in their heads. It's also, as of this month, out of date. Friends of the Wissahickon just broke ground on a project four years in the making. A separate study has spent the summer documenting exactly where the trail is falling apart underneath the gravel. And the volunteer hike calendar that used to be a loose collection of Sunday walks now runs on a sponsor and a roster of named trail leaders. None of this shows up if you're just glancing at the creek on your way past. All of it changes what a regular visit here actually looks like this fall.

Four Years of Planning Just Became a Groundbreaking

The biggest of these changes has a name most park users have never heard: the Germantown Neighborhood Connection Project, known internally as the Harvey Street project. Friends of the Wissahickon spent four years planning it before finally breaking ground the first week of September. The goal is straightforward on paper: improve safety and access at one of the park's connection points near Germantown. What's notable is the timeline. Four years of planning for a single access point tells you something about how deliberately FOW is now approaching physical changes to the park, a shift from the informal trail maintenance most visitors picture when they think of park upkeep.

The Study That Found 400 Cracks in the Trail

While that groundbreaking was happening, a different piece of work was already underway along the park's most heavily used stretch. WHYY's climate desk reported this spring that Friends of the Wissahickon has documented more than 400 incipient gullies along Forbidden Drive, the early-stage channels that form when stormwater runoff starts carving through the gravel. Forbidden Drive itself runs about 5.35 miles by FOW's own measurement. Do the math and that's roughly one gully forming every 70 feet along the entire length of the trail.

Longtime rider Marc Fisher, who's been on these trails for 30 years, put it plainly when describing what runoff does over time: "the erosion is what kills all trails." The study behind that quote isn't just an observation. It's funded by a Pennsylvania Department of Environmental Protection Coastal Zone Management grant, and its findings are meant to guide stormwater decisions for the next two decades. That's a longer planning horizon than most people apply to their own homes, let alone a gravel path through the woods.

What the Valley Green Inn Already Knows

The stakes of that erosion work aren't abstract for everyone. Valley Green Inn, the 19th-century roadhouse that sits directly on Forbidden Drive, has had its parking lot and basement flood during large storms. Events manager Amber Atkinson described what channeling that water correctly would mean for the Inn in a way that gets at why this matters beyond hikers and bikers: "channeling the water is going to be really huge in preserving the walkable space that we have down here." For a building that's hosted generations of the same families for weddings and anniversaries, preserving that walkable space isn't a minor line item.

A Hike Calendar With Actual Names on It

The visible, public-facing side of all this infrastructure work is FOW's fall lineup, and it looks different than it used to. The "Discover the Wissahickon" series is now presented by Newrez, and each hike is led by named Trail Ambassadors rather than an open call for volunteers. This week's hike, meeting at the Wigard Avenue trailhead, is being led by ambassadors Susie Gettes, Lisa Kleiman, Jennifer Danos, and Kent Peterman.

Here's what's left on the calendar heading into fall:

Some of these run in parallel, like the Meadow Miler and Orange Trail Outing both landing on October 10, which suggests FOW is running enough trained leaders now to split groups by pace or trail type rather than funneling everyone onto a single Saturday walk. That's a small operational detail, but it lines up with a bigger one: since 2022, FOW has split the park's 2,000-plus acres into 15 sections, each with its own trained Zone Steward responsible for that stretch. The hike calendar and the zone system point the same direction. This park is being run with more structure than it used to be, even though it still looks exactly like it always has from the trailhead.

Two Places to Stop Along the Way

None of this changes where you'd actually stop for a break, which is still one of two places depending on which part of the park you're in.

Valley Green Inn remains the anchor for anyone hiking the lower stretch of Forbidden Drive, the last of the old roadhouses that once lined this route before cars were banned from it in 1920. It's a working restaurant and event venue, not a snack stand, so plan accordingly if you're mid-hike and just want a coffee.

For that, head to PAPERtrail Bike Cafe, tucked into the barn at Historic Rittenhouse Town on Lincoln Drive, on the site of the country's first paper mill, built in 1690 by William Rittenhouse and his son. PAPERtrail opened in 2020 as a combined espresso bar and full-service bike shop, and it's open Wednesday through Friday from 9 a.m. to 3 p.m. and weekends from 9 a.m. to 1 p.m. Wednesday nights bring the shop's weekly "Gravel Espresso" group ride, one of the more consistent small gatherings the park has produced in recent years.

What This Adds Up To

Even the entertainment industry has noticed how untouched this place looks. HBO's crime drama "Task," filming its second season around Philadelphia, spent the first week of August shooting inside Wissahickon Valley Park, closing the Bells Mill West lot for a day and rerouting hikers away from the Manatawana Avenue trail entrance while cameras rolled on Forbidden Drive. Production crews chose this park precisely because it reads as untouched wilderness on screen, which is the same illusion that makes it easy to miss everything happening underneath that surface right now.

None of the changes described here will show up as a sign at the trailhead. The groundbreaking at Harvey Street won't be visible unless you're specifically looking for it. The gullies the erosion study found are, by definition, still early stage. The hike calendar just looks like more Saturdays with more names attached. But taken together, they describe a park that's being managed with more precision this year than in past years, funded studies instead of guesswork, named stewards instead of open volunteer calls, a groundbreaking instead of another planning meeting. If you walk here every week, this is the fall to actually notice it.

Keeping track of details like these, the small shifts that change how a place feels to live near, is part of what Keller Williams Main Line does across the neighborhoods it covers. If you're curious what else is changing in Roxborough, Chestnut Hill, or anywhere else near the Wissahickon watershed, reach out.