Flood Warnings and Advisories

High Streamflow Advisory – North Thompson River (NEW), Thompson River (NEW), South Thompson (MAINTAINED)
ISSUED: 10:00 AM June 24th, 2020

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

  • North Thompson River including Blue River, Clearwater River and surrounding tributaries
  • Thompson River at Kamloops and downstream to Spences Bridge

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

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

Rainfall has been impacting the region over the past day, with 5-30 mm of precipitation observed in areas of the North Thompson River watershed, and 3-10 mm over areas in the South Thompson. River levels in tributaries of the North Thompson River have been rising rapidly in response to this rainfall and on-going snowmelt, including areas around Blue River and Clearwater.
Flows are expected to continue to rise today in the headwater tributaries of the North Thompson, and over the next couple of days downstream on the North Thompson River through Clearwater and McLure with forecasting indicating flows reaching the 5-year to 10-year return period range, or potentially higher locally.
On the Thompson River at Kamloops and downstream, continued high flows from the South Thompson River, and rising flows from the North Thompson will lead to a period of rising flows over the next few days. Flows are expected to reach around, or slightly higher, than previous peak levels experienced earlier this year, with the current hydrologic modelling indicating a forecast water level of around 334.0 m at the Water Survey of Canada gauge 08LF023 Thompson River at Kamloops on Thursday into Friday.

The public is advised to stay clear of the fast-flowing rivers and potentially unstable riverbanks during the high-streamflow period.

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.

Links:

  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