Flood Warnings and Advisories

High Streamflow Advisory - South Thompson (MAINTAINED), Okanagan (ENDED), North Thompson (ENDED), Nicola Lake (ENDED)
ISSUED: 1:30 PM June 16th, 2020

The River Forecast Centre is maintaining a High Streamflow Advisory for:

  • South Thompson River and tributaries including Shuswap River, Shuswap Lake, Adams River and Salmon River

The River Forecast Centre is ending a High Streamflow Advisory for:

  • Nicola Lake
  • Central Okanagan including tributaries around Kelowna including Mission Creek and Mill Creek and surrounding areas
  • North Okanagan including tributaries around Vernon, Lumby, Winfield and surrounding areas
  • North Thompson River and tributaries

Rainfall late-last week and over the weekend has been leading to high river and lake levels throughout the region. In most river systems, peak river levels have past, and levels are now receding. Weather this week is expected to dry, and river and levels are expected to remain stable or decline.
In the South Thompson River and it’s tributaries, including Shuswap Lake, the Salmon River and the Adams River, peak levels from this rainfall have not yet been reached. Flows on the South Thompson River and on Shuswap Lake are expected to peak later Tuesday or into Wednesday and remain elevated through the week.

The River Forecast Centre continues to monitor the situation and provides updates as conditions warrant.

Contact for Media Relations, Ministry of Forests, Lands, Natural Resource Operations and Rural Development:
Tel: 250-213-8172

Levels of Warnings/Advisories:

  1. High Streamflow Advisory: River levels are rising or expected to rise rapidly, but that no major flooding is expected. Minor flooding in low-lying areas is possible. This is the lowest level.
  2. Flood Watch: River levels are rising and will approach or may exceed bankfull. Flooding of areas adjacent to affected rivers may occur. This is the intermediate level.
  3. Flood Warning: River levels have exceeded bankfull or will exceed bankfull imminently, and that flooding of areas adjacent to the rivers affected will result. This is the highest level.


  1. Home of River Forecast Centre
  2. Current Streamflow Conditions and Flood Forecast Modeling
  3. Map of Current Streamflow Return Periods for All WSC Stations
  4. CLEVER Model 10-day Forecasts of Discharges and Return Periods
  5. COFFEE Model 5-day Forecasts of Discharges and Return Periods
  6. Back to page of Flood Warnings and Advisories