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Central Lake Ontario Conservation (CLOCA) monitors, on an ongoing basis, weather forecasts and watershed conditions at locations across the watershed.

Our Water Monitoring Network is a collection of stream gauges, rain gauges, air and water temperature probes, groundwater monitoring wells, snow measurement sites, surface water and groundwater quality sampling sites.  These measurements, weather forecasts and radar information on temperatures and rainfall predictions, along with historic data, are all taken into consideration when developing a flood forecast. 


The data is catalogued and analyzed to develop effective watershed wide management programs in support of our polices like the Flood Forecasting and Warning System, Low Water Response and Source Water Protection programs.  Observing trends over time requires long term tracking and monitoring. 

Is your property located in a floodplain?

Explore CLOCA’s floodplain mapping tool and find out if your property is located in the floodplain and how to prepare.

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Flood Messages

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Flood Emergency

In the event of a flooding problem, call your local municipal emergency contact.

Municipal Emergency Contacts

Municipality of Clarington

Operations Office (7:00 am to 3:00 pm) 905 263-2291

Emergency Services (After hours & weekends) 905 623-5126

Regional Municipality of Durham

905 668-7711

City of Oshawa

Service Oshawa 905 436-3311

City of Pickering

Operations Centre 905 683-7575

Township of Scugog

905 985-2384

Works Yards

Oshawa/Whitby Depot

905 655-3344

Orono Depot

905 983-5116

Scugog Depot

905 985-7170 

Sunderland Depot

705 357-3140

Ajax Depot

905 683-1471

Township of Uxbridge

905 852-9181

Town of Whitby

Operations Centre 905 668-3437

Flooding Resources
Flood Warning

Flood Warning Messages

Central Lake Ontario Conservation Authority (CLOCA) monitors weather information, creek flows, snow pack and ice conditions in order to predict when floods will occur and how high the water may rise. When flooding is possible, or about to occur, CLOCA will issue flood messages to municipal emergency management officials and the media.

Flood Warning Message sample image


No flood conditions exist.

Low Water Response Messages

Central Lake Ontario Conservation monitors water levels and precipitation and assists in the coordination and support of a local, voluntary, water conservation response when water levels are low.

Flood Warning chart


Conditions are within normal limits.

Low Water Response
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