Flood Warnings and Advisories

Central Region - High Streamflow Advisory – Cache Creek/Bonaparte (DOWNGRADED); North Okanagan (NEW); Upper Nicola River, Salmon River (Salmon Arm) (MAINTAINED)
ISSUED: 9:00 AM May 3, 2020

The River Forecast Centre is downgrading to a High Streamflow Advisory for:

  • Cache Creek and Bonaparte River and surrounding areas

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

  • North Okanagan including tributaries around Vernon, Lumby and Winfield

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

  • Salmon River near Salmon Arm
  • Upper Nicola River above Nicola Lake

Snowmelt runoff has been contributing to rising flows in most areas over the past week or two. Rainfall occurred over the region in the past 24 hours, with precipitation totals in the 5-15 mm range being observed at Fire Weather Stations across the region. River levels have been responding to snowmelt and rainfall.

Current reported river conditions as of 7:00AM Sunday May 3rd include:

  • Bonaparte River below Cache Creek (08LF002) is flowing at 58 m3/s (10-year to 20-year flow) and slowly receding
  • Salmon River at Falkland (08LE020) is flowing at 28 m3/s (2-year and 5-year flow) and is experiencing a rise in flows since yesterday
  • Nicola River at Outlet of Douglas Lake (08LG028) is flowing at 43 m3/s and rising
  • Coldstream Creek above Municipal Intake (08NM142) is flowing at 4.8 m3/s (10-year to 20-year flow) and rising
  • Bessette Creek above Beaverjack Creek (08LC039) is flowing at 21 m3/s (approaching a 2-year flow) and rising

A low-pressure system continues to impact British Columbia today, with the potential for some showers through the region and cooler temperatures. Snowpack in mid-elevations (1400-1500m) and above is expected to continue to fuel on-going rises in river levels through next week. Snowpack in the Bonaparte and Cache Creek systems is being depleted, and risks of additional river rises from snowmelt are declining; flows are expected to remain high and can be impacted by rainfall.


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: 250 356-7506

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. 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