Lost Streams of D.C.: Slash Run Walking Tours (Dec. 2024)

D.C. was once laced with streams and marshes. Today, those watercourses are almost all gone, but traces remain on paper and in the landscape. On these walking tours, we’ll trace the route of long-vanished Slash Run as it flowed from Adams Morgan, down past Dupont Circle, and into Rock Creek near the P Street Bridge.

photo of present-day Adams Morgan showing rowhouses

Rowhouses at 17th St. and Kalorama Rd. NW, on the side of the stream valley. Slash Run is gone, but the topography that it carved out still survives.

When

There are two tours this December. Sign up for (free!) tickets at Eventbrite:

Where

map of present-day Adams Morgan in 1892

Adams Morgan, as seen on a US Coast and Geodetic Survey map from 1892, with modern-day streets overlaid in red. Slash Run flows down the paths of Champlain Street and Kalorama Road. (Original map via Library of Congress.)

Learn more

You can read more about Slash Run in an article that I wrote for Greater Greater Washington, see a map of all of the city’s lost streams, browse an interactive map with historical images, and hear about the project over on WAMU.

This tour is part of a series of bike and walking tours that explore the District’s hydrographic past.