SDG – SDG Counties residents are being advised to remain cautious around local waterways, even as flood risks begin to ease following several days of warm temperatures, rainfall and rapid snowmelt.
Earlier in the week, the Raisin Region Conservation Authority (RRCA) issued a flood warning while South Nation Conservation (SNC) maintained a flood watch, citing rising river levels caused by significant precipitation and melting snowpack. Environment Canada reported rainfall totals of up to 30 millimetres in the RRCA watershed and as much as 40 millimetres in parts of the South Nation watershed.
Those conditions pushed many rivers and streams to or beyond capacity, raising concerns about flooding in low-lying areas, along rural roads and near waterways. Areas of particular concern included parts of South Glengarry – such as McGillivray Road, Chapel Road, River Road, Cashion Road and Loyalist Road – as well as properties upstream of St. Andrews West in South Stormont.
Saturated ground conditions across the region limited the ability of water to be absorbed, forcing runoff directly into already swollen waterways. In addition, lingering ice in some rivers increased the risk of ice movement and potential ice jams near bridges and culverts.
However, as of March 16, conditions have begun to improve.
In a press release issued that day, the RRCA downgraded its flood warning – originally issued March 11 – to a Water Safety Statement. While water levels declined over the weekend, the authority cautioned that fast-moving water, unstable banks and deteriorating ice conditions continue to pose hazards near rivers and streams throughout its jurisdiction.
The RRCA also noted that an additional 15 to 25 millimetres of rainfall forecast for March 16 could cause short-term increases in water levels, though widespread river flooding is no longer expected at this time.
Water management efforts remain ongoing in North Glengarry, particularly at Loch Garry, Middle Lake and Mill Pond. Officials warn that water levels along the Garry River may rise suddenly as part of these controlled operations aimed at reducing overall flood risks.
Across the broader South Nation watershed, rivers and streams remain elevated, though conditions are stabilizing. Authorities continue to monitor water levels closely as runoff works its way through the system.
Residents are still urged to take precautions, particularly those living in flood-prone areas. Homeowners should ensure sump pumps are functioning properly, clear debris from culverts, extend downspouts away from buildings and secure outdoor items.
Officials also stress the importance of staying away from waterways during this period. Fast currents, slippery banks and unsafe ice can create dangerous conditions, even as overall flood risks decline.
The RRCA’s Water Safety Statement is expected to remain in effect until 4 p.m. on March 20, with further updates to be provided if conditions change.
