Flood Warnings and Advisories

High Streamflow Advisory – Fraser River
UPDATED: 1430h May 18th, 2018

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

  • Fraser River  including the mainstem from Lytton through Hope and the Fraser Valley

Persistent warmer than normal temperatures across British Columbia for the past three weeks has led to a much earlier than normal runoff period for the Fraser River. High temperatures last week and early this week led to significant snowmelt runoff in the headwaters of the Fraser River upstream of Prince George, and in other tributaries. Flows have been rising throughout the downstream reaches of the Fraser River. Note areas upstream on the Fraser River, including Prince George and Quesnel, are covered on a separate Flood Watch.


The Water Survey of Canada gauge Fraser River at Hope (08MF005) is currently flowing at 10,700 m3/s and rising. Water level at the Fraser River at Mission gauge (08MH024) today is at 5.9 m and rising.
Flows are expected to continue to rise into the weekend, with flows at Hope expected to reach the 11,500-12,000 m3/s range this weekend and into next week. Water levels forecast at Mission of 6.0 m on May 18th, 6.4m on May 20th (similar to peak water levels in 2012) and up to 6.57m on May 21st.


With hot weather forecast to continue over the Fraser River watershed through this weekend and early next week, additional rises on the lower Fraser River are expected later next week.
Complete 10-day Lower Fraser River Water Level Forecasting and results are available at: http://bcrfc.env.gov.bc.ca/freshet/lower_fraser/LFR-10-DayFloodLevelForecasts.pdf

The River Forecast Centre will continue to monitor conditions and update this advisory as conditions warrant.

Contact:
Media relations,
Ministry of Forests, Lands, Natural Resource Operations and Rural Development
Tel: 250 356-7506

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.
  2. Flood Watch: River levels are rising and will approach or may exceed bankfull. Flooding of areas adjacent to affected rivers may occur.
  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.

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