Post Falls is a 40-foot waterfall on the Spokane River at Falls Park–Avista Dam in Post Falls, Kootenai County, Idaho, marked unconfirmed and regulated by the World Waterfall Database.
The falls
Three channels of the Spokane River are occupied here by dams or a powerhouse. The northeast channel carries cascades dropping about 40 feet below the spillway gates, while a smaller south channel typically runs only during spring melt. A City of Post Falls planning document describes a natural 40-foot falls at the dam, though the waterfall's original location and extent are disputed.
Getting there
Falls Park–Avista Dam, at 305 W. Fourth Avenue, has public observation decks along with accessible paved paths, restrooms, a playground, shelters and interpretive signs looking into the gorge. City parks run from sunrise to sunset unless otherwise posted.
When to go
The city names spring runoff as one of the best times to see the falls, and winter brings snow and ice views. Avista controls the spillway flows that shape the falls.
On site
Sirens and signs near the dam warn of changing flow. The park's observation decks and paths give views into the gorge.
History and name
In 1871, Frederick Post acquired more than 200 acres from Andrew Seltice to build a water-powered lumber mill here; Avista now operates the dam and hydroelectric plant on the site. The waterfall is also known as Q'emiln Falls, though Post Falls is the official name.
Nearby
Liberty Lake Falls is about 8.2 miles away, Canada Island Falls about 21.7 miles, and Upper Spokane Falls, also on the Spokane River, about 21.8 miles.
Distances are straight-line.