Saint Vrain Creek flows through the heart of Boulder and Weld counties
​before it joins one of the most important-and heavily used-rivers in Colorado, the South Platte River.  

Our river is home to native fish, and irrigates thousands of acres of pasture and cropland. It flows through mountain towns, whitewater parks, acres of Boulder County Open Space, and the population centers of Longmont and Lyons. It is home to migratory birds, and a favorite of local anglers.  Its headwaters supply drinking water via a complex network of reservoirs and pipelines. Throughout, the Saint Vrain plays a vital role in the community, and the hard-working members of Saint Vrain Creek Coalition are proud to be part of its ongoing vitality and restoration.