Longfellow Bridge and the Charles River Basin, Boston, Massachusetts

The Longfellow Bridge—completed in 1908 and later renamed for poet Henry Wadsworth Longfellow—is viewed here looking downstream along the Charles River from a window of the Museum of Science, which sits approximately 0.5 miles upstream of the New Charles River Dam and the USGS streamgage New Charles River Dam at Boston, MA (USGS 01104715). The Charles River, flowing 80 miles from Hopkinton to Boston Harbor, is one of Massachusetts’ most intensively managed urban rivers, supporting flood control, navigation, recreation, and long‑term water‑quality restoration within its engineered basin. In this scene, the bridge, river surface, and surrounding shoreline vegetation illustrate the interplay of hydrologic management and urban infrastructure along the lower Charles River corridor.