Watershed Conditions Statements

May 17, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent analysis from the Ottawa River Regulation Committee (ORRC) indicate that water levels along the lower Ottawa River from Chats Lake to the Grenville/ Hawkesbury area are slowly declining but remain high. All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk as spring runoff continues along…
May 14, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent analysis from the Ottawa River Regulation Committee (ORRC) indicate that water levels along the lower Ottawa River from Chats Lake to the Grenville/ Hawkebury area have stabilized and will slowly recede in the coming weeks. All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk as…
May 13, 2019 —A FLOOD WATCH is being maintained for properties around Bobs Lake and Christie Lake. The water levels on both lakes continue to decline slowly and remain above average for this time of year.  The current water level on Bobs Lake is above the ‘Full Supply’ threshold at which flood damage can occur.  The current water level on Christie Lake is such that some flood damage can also occur. The current forecast indicates up to 30 mm of rain could fall between today and Wednesday. This rainfall will likely increase water levels again on Bobs Lake and Christie Lake.…
May 10, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent analysis from the Ottawa River Regulation Committee (ORRC) indicate that water levels along the Ottawa River from Mattawa to Montreal are increasing due to recent precipitation and increased flow from the upper part of the watershed.  Water levels are not expected to reach the levels observed last week over the forecasted period. All flood-prone…
May 7 , 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The current weather forecast indicates that significant rainfall amounts are possible from Thursday morning into Friday as a large low-pressure system moves into the area. The most recent analysis from the Ottawa River Regulation Committee (ORRC) indicate that water levels along the Ottawa River from Chats Lake down to Lac Deschenes are stable and may increase…
May 6, 2019 —A FLOOD WATCH is being maintained for properties around Bobs Lake and Christie Lake. Water levels on both lakes continue to decline slowly but both remain above average for this time of year.  The current water level on Bobs Lake is above the "Full Supply" threshold at which flood damage can occur.  The current water level on Christie Lake is such that some flood damage can also occur. The current forecast indicates between 20 mm and 35 mm of rain could fall later this week. This rainfall will likely increase water levels again on Bobs Lake and Christie Lake. Parks…
May 3, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent model outputs from the Ottawa River Regulation Committee (ORRC) indicate that water levels have peaked on Lac Coulonge and are expected to begin rising again over the next few days. Along the Ottawa River below Lac Coulonge, levels are expected to remain stable or slowly decline over the next few days in all locations.  All flood-prone areas…
May 1, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent model outputs from the Ottawa River Regulation Committee (ORRC) indicate that water levels have peaked on Lac Coulonge.  From Chats Lake down to Hawkesbury/Grenville, levels have stabilized but are expected to increase due to forecasted rain of 15 to 35 mm on a large part of the basin starting today. All flood-prone areas along the…
April 29, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent model outputs from the Ottawa River Regulation Committee (ORRC) indicate that runoff from snowmelt and precipitation is decreasing from Mattawa to Lac Coulonge with levels stabilizing in Mattawa and Pembroke. The Lower Ottawa River water levels are increasing due to upstream spring runoff caused by rainfall, saturated soil and snowmelt over the central part of…
April 29, 2019 - Unlike the Ottawa River Watershed which is currently experiencing historic high water conditions, the water levels and flows in the Rideau Valley Watershed are declining and approaching seasonal levels in all waterways except for Bobs Lake and Christie Lake. The current forecast indicates between 35 mm and 50 mm of rain could fall later this week.  This rainfall will have limited impact within the watershed except for Bobs Lake and Christie Lake where levels will likely increase.  Parks Canada staff are closely monitoring the water levels in these lakes, and operations at the Bolingbroke Dam will…
April 27, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The most recent model outputs from the Ottawa River Regulation Committee (ORRC) indicate that the previous estimates for peak levels remain unchanged at this time. All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk. Peak water levels across many areas of the Ottawa River will exceed those experienced in…
April 25, 2019 — Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining the FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. Significant rainfall has fallen over the Ottawa River basin since Thursday, April 18, 2019. There is additional rainfall amounts of 25 to 50 mm forecast over the next 24 to 36 hours. All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk. Peak water levels across many areas of the…
April 23, 2019 — The Rideau Valley Conservation Authority (RVCA), in conjunction with Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation Authority (SNC) is maintaining our FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. Significant rainfall has fallen over the Ottawa River basin since Thursday, April 18, 2019.  Warmer than forecasted temperatures were received Sunday and Monday. Additional rainfall of 15 to 50 mm is anticipated today and tomorrow in northern and central areas of the Ottawa River basin. Saturated soils, warm temperatures and precipitation received continues to increase snowmelt in the Ottawa…
April 23, 2019 – Rainfall amounts close to 50 mm fell over much of the Rideau Valley Watershed between last Thursday through Saturday.  This rain resulted in increased water levels and flows across the watershed over the Easter weekend.  Conditions have now stabilized and water levels and flows are declining in all areas.  The current forecast is calling for 10 to 20 mm of rain starting this evening and into Wednesday.  The forecasted rain is not expected to significantly increase water levels or flows. At this time, a FLOOD WATCH is being issued for properties around Bob’s Lake and Christie…
APRIL 21, 2019 OTTAWA RIVER FROM ARNPRIOR TO L'ORIGINAL — The Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining our FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The latest model run for the Ottawa River indicates that some areas of the Ottawa River are expected to peak today while others will be closer to the end of the week. There is additional rain expected over the northern portion of the watershed that could impact levels and flows later in the…
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Contact Us

Address:
Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario K4M 1A5

Phone:
613-692-3571, 1-800-267-3504

Email:
info@rvca.ca

Hours:

Monday to Friday, 8:30 a.m. to 4:30 p.m.

Member of: conservation ontario