Federal river managers warned last week that Lake Roosevelt’s future operations could change as a treaty between the United States and Canada goes out of date a year from now. Meetings are planned, starting today, to explain it all to the public online.

Absent modernization, the treaty would no longer require Canada and the United States to coordinate for flood risk management as they have for the first 60 years of the treaty. The United States’ ability to “call upon” Canadian storage when needed does not expire and continues so long as Canada has dams in the basin that contribute to flood risk reduction in the United States.

But Canadians don’t all approve of the treaty, which lets the U.S. use storage space in Canadian reservoirs for flood control, while promising Canada a share of electric power produced by federal dams on the Columbia River.

The Army Corps of Engineers and Bureau of Reclamation operate 14 dams in the Columbia River system and continue to work as part of the U.S. negotiating team to negotiate a modernized Treaty regime with Canada. If Canada and the United States can reach agreement to modernize the Treaty regime, it could reduce the uncertainty of this September 2024 change. However, USACE and Reclamation will be prepared to operate regardless of the outcome of negotiations, USACE said in a press release.

The U.S. can still ask Canada for storage space, “but t is unclear how Canada will operate its reservoirs after September 2024,” the release said. “One potential result is less predictability of managing runoff from Canada to better protect the United States from flooding, because the United States does not have additional reservoir space to offset the loss of assured water storage space in Canadian Treaty reservoirs. This will potentially result in changes affecting various stakeholders across the region; although, the extent of those changes is unclear at this point.”

“However, water managers do not anticipate increasing flood risk in the United States because of existing rights to call upon Canadian reservoirs under the Treaty and our ability to operate Lake Roosevelt consistent with current operating rules. Lake Roosevelt is likely to experience lower lake elevations more often in the winter and spring. Related U.S. dams in the Columbia River Basin already have rules in place that maximize the storage space available for flood risk management regardless of potential changes related to operational uncertainty in Canada. USACE and Reclamation will continue operating projects for water supply, navigation, fish and wildlife, and other purposes.”

Info meetings planned

Federal planners will hold four virtual public information sessions in September and October to provide information to the public. These sessions will be informational in nature and presenters will not take questions. For more Real-Time Flood Risk Management information, visit: https://www.nwd.usace.army.mil/CRWM/Columbia-River-Treaty/.

Virtual meeting information:

Dates: Wednesday, Sept. 27: 12-1 p.m. PST and 5-6 p.m. PST

Tuesday, Oct. 10: 11 a.m. – 12 p.m. PST and 5-6 p.m. PST

Link: https://usace1.webex.com/meet/edward.t.conning

Call: 1-844-800-2712 (US) (Call-in toll-free number)

Access Code: 1998 73 5911#