Avista to drain down Lake Spokane to control invasive weeds

Spokane, WASH. –

Avista will drain down Lake Spokane, beginning in January.

According to the company, they anticipate to drain a foot of water per day, totaling around 13 to 14 feet after two weeks. This will bring water levels down to normal winter elevation, which Avista says will help control invasive weeds that grow in Lake Spokane.

The drawdown will begin around January 6, 2020, weather permitting.

Avista will be working upstream of Long Lake Dam, and downstream of Nine Mile Dam. This drawdown, coupled with lowering temperatures, will curb weeds like Eurasian watermilfoil.

Map courtesy of Avista

In addition to preventing the spread of invasive aquatic weeds, this drawdown will give lakeside homeowners the chance to finish repair work on their properties, according to Avista.

The utility company asks owners to remove boats from the water and secure their docks and boathouses.