Lake Siskiyou, Reservoir near Mount Shasta, California, US

Lake Siskiyou is a reservoir situated at the base of Mount Shasta in northern California. The water is held back by a dam across the Sacramento River and covers several hundred acres.

Lake Siskiyou was created by Box Canyon Dam on the Sacramento River, a project tied to the California State Water Project after the Burns-Porter Act. The state acquired the land by eminent domain from the Boss and Spini families, who had ranched there. In late 2010 a $2.8 million walking bridge over the Wagon Creek inlet completed a trail around the entire lake.

The reservoir is named after Siskiyou County, whose name derives from a Chinook word used by early fur traders for the region's inhabitants. The Boss and Spini families ranched this land before the state bought it by eminent domain for the Box Canyon Dam project.

A camp resort by the water offers lodging in cabins, tent sites, and RV spaces along with boat rentals for visitors. The best time to visit is spring through fall, when most facilities are open and the weather is pleasant.

The Wagon Creek Bridge, finished in late 2010, is a permanent structure costing $2.8 million, funded by the McConnell Foundation, the State of California and federal stimulus funds. It closed the last gap in the trail around the lake. The same foundation helped fund Redding's Sundial Bridge.