Flood Warning for Inland Lakes, Lake Ontario and St. Lawrence River

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St Lawrence River at Cornwall

The Cataraqui Region Conservation Authority (CRCA) has extended the Flood Warning today for Lake Ontario and the St. Lawrence River as water levels remain at record highs.

Water levels on Lake Ontario and the upper St. Lawrence River have declined by about 22 cm since their peak at the end of May. Despite high outflows at the Cornwall dam, the decline has been slow due to frequent rainfall.

The International Lake Ontario – St. Lawrence River Board has forecast that a slow, steady decline will continue into the fall. Shoreline flooding and erosion from high waves is still possible during storms and periods of strong winds.

The water level measured today at Kingston is currently 75.60 m, which is 0.4 m below the Lake Ontario 100-year flood elevation of 76.0 m.

The current level of the St. Lawrence River measured at Brockville is 75.20 m. This is 0.6 m below the 100-year level of 75.8 metres in that area along the River.

Shoreline residents are reminded that any work near the water (e.g. placement of fill, armour stone, repairs to docks, etc.) will require a permit from the CRCA. Call our office or visit our website www.crca.ca for further information.

The CRCA is urging residents to take care along the shoreline and on the water as levels decline. Unsafe/unstable banks may exist due to recent erosion, high water and wave action has deposited debris along shorelines and beaches, and floating debris could cause hazardous conditions for boaters.

For further information on Lake Ontario visit www.ontario.ca/flooding.

For up to date flooding information, please visit the CRCA’s flood forecasting and information page at www.crca.ca/flood.

CRCA staff will continue to monitor conditions, forecasts, and update statements as needed.

This Flood Warning will remain in effect until Friday September 15, 2017.


FLOOD WARNING ISSUED FOR MULTIPLE LAKES IN THE CATARAQUI REGION

The Cataraqui Region Conservation Authority (CRCA) has issued a Flood Warning for the following lakes:

– Buck Lake – Canoe Lake – Charleston Lake*

– Devil Lake – Kingsford/Desert Lake – Loughborough Lake

– Lower Beverley Lake – Singleton Lake – Sydenham Lake

– Upper Beverley Lake

* Charleston Lake may see levels higher than those experienced in May. Connected lakes and watercourses associated with the above list may also be affected.

Heavy rain that fell throughout the region on Monday has caused water levels on the above listed lakes to rise very quickly and flooding of low-lying areas may occur or is already occurring in the affected areas. Residents can expect to see high spring type levels and flows for several days as the water works its way through the system.


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On Monday, CRCA gauge stations recorded as much as 159 mm of precipitation in the east (Brockville) and a range of 90 -160 mm across its jurisdiction that extends between Brockville and Greater Napanee. This amount of rainfall in such a short period of time has less than a one per cent chance of happening in any given year.

Water managers continue to conduct operations to minimize the effects and pass flows down through the system.

The CRCA is urging residents to exercise caution outdoors around lakes and streams, and to stay away from deep, fast flowing watercourses, as well as any dams.

CRCA staff will continue to monitor conditions and forecasts, and will update statements as needed. The Flood Warning will remain in effect until Wednesday August 2, 2017.

The Flood Watch for Buells/Butlers Creek and the Detention Basin in Brockville still remains in effect until Thursday July 27, 2017.


July 27 Update:

Water levels on inland lakes and streams within the Gananoque River and Cataraqui River watersheds continue to rise as the water from Monday’s storm works its way through the system.

These watersheds have been inundated and it will take several days before any reductions in levels will be seen. Charleston Lake is still experiencing a daily level increase of about 3 cm and water levels are approaching those measured during the flooding in 2014. Flooding is also occurring in low-lying areas along the Gananoque River at Marble Rock Road and Singleton Lake.

The CRCA is advising residents to take all precautions necessary to prepare for flooding. If water levels are approaching a building, a sandbag berm may be appropriate. Contact your municipality for further information regarding sandbags.

Lakes under Flood Warning*:

–  Colonel By Lake
–  Cranberry Lake
–  Dog Lake
–  Gananoque Lake
–  Marble Rock Road
–  Newboro Lake
–  Opinicon Lake
–  Buck Lake
–  Canoe Lake
–  Charleston Lake
–  Devil Lake
–  Kingsford/Desert Lake
–  Loughborough Lake
–  Lower Beverley Lake
–  Singleton Lake
–  Sydenham Lake
–  Upper Beverley Lake

*connected lakes and watercourses associated with the above list may also be affected.

Water managers continue to conduct operations to minimize the effects and pass flows down through the system.

The CRCA is urging residents to exercise caution outdoors around lakes and streams, and to stay away from deep, fast flowing watercourses, as well as any dams and outflow channels.

CRCA staff will continue to monitor conditions and forecasts, and will update statements as needed. The Flood Warning will remain in effect until Wednesday August 2, 2017.

The Flood Watch has been cancelled for Buells/Butlers Creek and the Detention Basin in Brockville, and Sand Lake near Elgin in the Cataraqui River Watershed has been taken off Flood Warning status.


Flood Watch: Flooding is possible in specific watercourse or municipalities. Municipalities, emergency services and individual landowners in flood-prone areas should prepare.

Flood Warning: Flooding is imminent or already occurring in specific watercourses or municipalities. Municipalities and individuals should take action to deal with flood conditions. This may include road closures and evacuations.


Releases: CRCA.ca
Photo – Cornwall Power Dam & St Lawrence Seaway: Michel Rathwell (cc)