Huaba Reservoir and Yunlong Reservoir in Luquan County. A water supply pattern of "seven reservoirs, one station and one river" with Yunlong, Songhuaba and Qingshuihai as the main reservoirs has been formed in the main urban area of Kunming, with a protected area of 2,000 square kilometers and a population of more than 200,000. Water source protection areas refer to areas designated by the state for special protection of some particularly important water bodies.