Columbia River Runoff volume forecast

Updated biweekly between December and July

For more narrative information, see the National Weather Service Northwest River Forecast Center

Reservoir elevations and flows

Updated daily

Elevations for major U.S. reservoirs

River flow at key Lower Snake and Columbia dams

Power flow in and out of the region

Updated daily (current period )

This shows how much average power has been imported and exported in the last 30 days.

For more information, see Bonneville's intertie analyses

Intertie Avg power flow Direction
California (AC+DC) California
Canada (BC) Canada

Acronyms and glossary

  • DSI - Direct Service Industry, like aluminum processors
  • intertie - high-voltage transmission lines connecting the Northwest to other regions
  • KCFS - thousand cubic feet per second
  • load - demand
  • MAF - million acre-feet
  • MW - megawatt
  • NMFS - National Marine Fisheries Service