Water levels on Ottawa River increasing, but no indicators of concern at this time

The Royal Canadian Navy Monument at Richmond Land, next to the Ottawa River. (Brad Quinn/CTV News Ottawa)

The Ottawa River Regulation Planning Board is advising residents that water levels on the Ottawa River are higher than normal for this time of year because of an early spring melt, but there is currently no indication of any major flooding risks.

The board issued a statement Wednesday to say that recent rainfall and above-average temperatures have caused water levels and flows to increase, and said there is potential for minor flooding in low-lying areas—those that typically flood during the spring freshet period.

“Spring freshet is starting early this year due to recent warm temperatures combined with rain that initiated the melting of snow across the Ottawa River basin. At this time, weather forecasts call for the return of closer to normal temperatures and a moderate melt of the remaining snow cover,” the board said in a news release. “It is too early to predict the magnitude and timing of the peak in the main stem of the Ottawa River.”

The board says sub-zero temperatures at night are moderating the spring melt, but above normal temperatures combined with some rain this week are expected to lead to further snow melt across the basin, which is expected to increase water levels between Mattawa and Montreal.

Ottawa reached a temperature of 14 C at 4 p.m. Wednesday, and Thursday’s forecast calls for a high of 17 C with a chance of showers. The typical high for this time of year is closer to 4 C.

“While there are no indicators of concern at this time, it is important to remember that spring water levels depend on several factors including the timing and amount of rainfall during the months of March, April and May. Weather conditions that bring a rapid melt of the snow or heavy rainfall events can only be known a few days in advance,” the board said.

Conservation authorities in eastern Ontario are reminding residents to be cautious around bodies of water.