Nearby questions in Canoga Park Search Advanced Filters Search By Distance Within 5 miles Within 10 miles Within 15 miles Within 20 miles Within 25 miles Within 30 miles Within 35 miles Within 40 miles Within 45 miles Within 50 miles More Search Where does the Los Angeles River start? No Reviews Favorite The Los Angeles River begins at the confluence of Bell Creek and Arroyo Calabasas (also known as Calabasas Creek) at Owensmouth Avenue and Bassett Street in Canoga Park, Los Angeles. Read more...