Trout Creek is a northward-flowing stream originating on the west side of Armstrong Pass on the Carson Range in El Dorado County, California, United States.

[5] Trout Creek has a drainage area of 106 square kilometers, and the main channel length is approximately 19.5 km long.

[9][10] Beaver were re-introduced to the Tahoe Basin by the CDFG and the U. S. Forest Service between 1934 and 1949 in order to prevent stream degradation and to promote wetland restoration.

The presence of beaver dams has also been shown to either increase the number of fish, their size, or both, in a study of brook, rainbow and brown trout in Sagehen Creek, which flows into the Little Truckee River at an altitude of 5,800 feet (1,800 m) and is a stream typical of the eastern slope of the northern Sierra Nevada.

[11] Not only have aspen and cottonwood survived ongoing beaver colonization but a recent study of ten Tahoe streams, including Trout Creek and Cold Creek, utilizing aerial multispectral videography has shown that deciduous, thick herbaceous, and thin herbaceous vegetation are more highly concentrated near beaver dams, whereas coniferous trees are decreased.