Denver Water getting early clues to how burn area will impact water quality during the spring runoff Author: Cory Reppenhagen Updated: 9:25 PM MST March 2, 2021 PARSHALL, Colo. — One of the many large wildfires that burned in Colorado last summer was near the Williams Fork reservoir. The fire scorched the hills standing above the river but Denver Water said they were lucky it didn't come too close to the reservoir. The water utility said they still do expect some impacts to water quality in the area as a result of the Williams Fork fire. That will likely come during the spring runoff, so they dispatched water sampling crews to the headwaters to sample and test the water.