Whatcom Creek is a waterway in Bellingham, Washington, United States. Approximately 4 miles long, it drains Lake Whatcom through Whatcom Falls Park and through the city of Bellingham to Bellingham Bay. The creek starts at the control dam for Lake Whatcom, in Whatcom Falls Park, where the creek goes over many falls, from about 350 feet to about 8…Whatcom Creek is a waterway in Bellingham, Washington, United States. Approximately 4 miles long, it drains Lake Whatcom through Whatcom Falls Park and through the city of Bellingham to Bellingham Bay. The creek starts at the control dam for Lake Whatcom, in Whatcom Falls Park, where the creek goes over many falls, from about 350 feet to about 80 feet above sea level. It flows across a short plain to downtown Bellingham and over the falls where the first lumber mill that was powered by the falls was built in 1854.