Illinois Creek Falls is a waterfall on Illinois Creek in King County, Washington, in the North Cascades region, with a total height of about 118 feet. It lies about 14.6 miles southeast of Gold Bar and roughly 24.7 miles east of Sammamish as the crow flies.
At 118 feet it is taller than the typical Washington waterfall of about 82 feet, ranking 358th of 941 with a recorded height. The tallest single drop is 63 feet. The water comes down as a slide, where the water glides down a smooth, inclined rock surface, combined with a cascade character. It falls in 2 drops.
The North Cascades are a wilderness of jagged peaks, glaciers and deep, forested valleys of western hemlock, silver fir and Douglas fir, with some of the heaviest snowfall in the country. Meltwater from glaciers and snowfields pours down thousands of feet of cliffs in countless cascades and horsetail falls. Illinois Creek carries 2 recorded waterfalls; the biggest of them reaches 141 feet.
There are 236 recorded waterfalls in King County. Beaverdale Falls, a 141-foot segmented cascade waterfall, is under a mile away. Upper Tolt Falls, is about 2.1 miles away. Paradise Lakes Falls, a 200-foot horsetail waterfall, is about 2.2 miles away.
Illinois Creek Falls is located at 47.6689° N, 121.5514° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The creek name is confirmed against the federal Geographic Names Information System. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.