Watershed Conditions Statement - Water Safety

Posted on Friday June 30, 2017


BULLETIN
Ministry of Natural Resources and Forestry
Watershed Conditions Statement - Water Safety
MNRF Parry Sound District
Muskoka River Watershed
Magnetawan River Watershed

NEWS
Friday, June 30, 2017
10:00 am

The Ministry of Natural Resources and Forestry (MNRF) – Parry Sound District is advising area residents that a Watershed Conditions Statement - Water Safety is in effect for the District, which includes the District Municipality of Muskoka, the Territorial District of Parry Sound and a north-west portion in the County of Haliburton.

High water levels and flow conditions are expected throughout the area following precipitation moving through the district dropping up to 40mm of rain on Friday through to Saturday evening.
Residents within the Parry Sound-Muskoka area should keep a close watch on conditions, regularly check for updated messages and exercise caution around water bodies as flows and levels within rivers and streams remain high.

MNRF also advises extreme caution when using forest access roads for outdoor activities as many are seasonally inundated with water, prone to washouts and may be impassible due to current water levels.

MNRF is closely monitoring the weather and developing watershed conditions. Further updates will be issued as appropriate.

TECHNICAL INFORMATION

Description of Weather System

This message is being sent based on information received from MNRF - Surface Water Monitoring Centre, MNRF - Aviation Forest Fire and Emergency Management Services and Environment Canada.

A series of low pressure systems are tracking through the province, intermittently, through to Saturday. This weather pattern results in a highly unsettled weather conditions in the province and is likely to bring rain and thunderstorm for southern and northeast Ontario through this period and beyond.

Friday’s forecast calls for 5mm of rainfall in areas to the north of Georgian Bay. Additional 10 to 15mm due to thunderstorm is also forecast with this system.
Unsettled conditions will persist into Saturday and possibly into the weekend with additional rainfall amounts in the 10-15mm range with a risk of thunderstorms anywhere in areas covered under this message.


At present time there is uncertainty in the forecast amounts and locations due to the unsettled nature of the approaching systems. The message will be updated with more current weather conditions as necessary.

Description of Current Conditions

Current water levels and flows are higher than normal for this time of year, due to higher than normal precipitation amounts.

Recent, widespread and heavy rainfall received across parts of southern Ontario and parts of northeast Ontario resulted in higher than normal flows last weekend into earlier this week. Forecast widespread and sporadic rainfall, coupled with thunderstorms continuing until Saturday in watersheds located to the east of Lakes Huron, Georgian Bay, eastern Ontario and to the north of Georgian Bay up to Timmins could pose a risk of high stream flows/water levels in area streams and possible flooding in isolated locations.

Close attention should be paid to local flood conditions reports from conservation authorities and municipalities, and as always, a close watch on meteorological conditions, including thunderstorm alerts, is recommended.

Expiry Date:
This message will expire on Tuesday, July 04 2017, 09:00 AM
Terminology: Notification Levels


WATERSHED CONDITIONS STATEMENT – WATER SAFETY: indicates that high flows, melting ice or other factors could be dangerous for such users as boaters, anglers and swimmers but flooding is not expected.

WATERSHED CONDITIONS STATEMENT - FLOOD OUTLOOK: gives early notice of the potential for flooding based on weather forecasts calling for heavy rain, snow melt, high winds or other conditions

FLOOD WATCH: potential for flooding exists within specific watercourses and municipalities

FLOOD WARNING: flooding is imminent or occurring within specific watercourses and municipalities.


Contact Information:


For more information please contact:

Parry Sound District MNRF Water Management Department

705-646-5531


A close watch on local conditions and weather forecasts from Environment Canada is recommended. Environment Canada bulletins can be found at http://weather.gc.ca/
The Surface Water Monitoring Centre public webpage can be found here: http://www.ontario.ca/flooding