sentence: Boulder Creek is a tributary of the South Platte River.
sentences_before: Boulder Creek flows through the City. Boulder Creek was named a long time before the city was built. It was named after the big granite boulders that have fallen into the creek over the years. Historians think that Boulder City was named after Boulder Creek. The water in Boulder Creek comes from melting mountain snow and small rivers West of the city.
concept_name: Boulder Creek
headings: Boulder, Colorado Geography
categories: County seats in Colorado