2021 Map of Duncans Mills

About this map

Russian River winding toward the Pacific coast defines this Sonoma County landscape, anchoring a string of riverside communities from Guernewood Park and Monte Rio down to the coastal bluffs. The map captures the meeting of river and sea at Jenner, where Penny Island sits in the estuary near Bridgehaven. The terrain is deeply incised by numerous gulches and canyons, such as Slaughterhouse Gulch and Sheephouse Cr, reflecting a history of timber and ranching activities indicated by the Bull Barn Ranch and Sawmill Gulch. Local heritage is preserved in sites like the Duncans Mills Cem and Saint Catherines Catholic Cem. Along the coast, the topography shifts to dramatic points and beaches, including Duncans Point and Portuguese Beach, connected by the coastal corridor. This survey documents the complex interface of coastal recreation, historic settlements, and the river-driven economy in the early 21st century.