Within the RVCA’s regulated floodplain, staff have identified a number of Flood Vulnerable Areas throughout the watershed where flood events may have an impact on nearby properties. (See watershed map and table).

A series of new Neighbourhood Flood Maps for 20 vulnerable City of Ottawa communities along the Ottawa and Rideau Rivers shows the potential extent of flooding for 1:2, 1:5, 1:10, 1:20, 1:50 and 1:100 year return period floods for these neighbourhoods. 

NOTE: These maps are for informational purposes only and are not as exact as those used for regulatory purposes. 

Please note:

• The 1:2 year return period flood event has a 50% chance of occurring in any year.
• The 1:5 year return period flood event has a 20% chance of occurring in any year.
• The 1:10 year return period flood event has a 10% chance of occurring in any year.
• The 1:20 year return period flood event has a 5% chance of occurring in any year.
• The 1:50 year return period flood event has a 2% chance of occurring in any year.
• The 1:100 year return period flood event has a 1% chance of occurring in any year.

 All Rideau River Additional Flood Maps are based on recorded flow at the Rideau at Ottawa [02LA004] gauge, located at Carleton University. The two Grandview Ottawa River Additional Flood Maps are based on recorded flow at the Ottawa River at Britannia [02KF005] gauge. The Boise Village/Morin Road Additional Flood Map is based on recorded water levels at the RVCA Cumberland gauge.

DISCLAIMER:   Users of the RVCA flow data and water level data are cautioned to consider the unverified nature of the information before using it for decisions that concern personal or public safety or the conduct of business. The Rideau Valley Conservation Authority assumes no responsibility for the correctness of the information contained in this website nor liability to any user of such information, regardless of the purpose. River levels and flows can change rapidly.

INSTRUCTIONS

1) A user-defined time frame can be selected via the "FROM DATE" and "TO DATE" tools above (Date Format: YYYY-M-D). An active 90-day window is loaded by default.
2) Chart and data export functionality is available via the [ ≡ ] icon at the top right of the chart area.
3) Series may be toggled on/off by clicking on the associated legend elements at the bottom of the chart.
4) Data values can be reviewed by hovering over the desired series.

DATA STATUS - PROVISIONAL

The RVCA cannot guarantee the accuracy of the provided data. Data accuracy can be affected by a number of factors including, but not limited to: Ice and/or sediment accumulation, backwater effects and equipment malfunction/maintenance. Users of the RVCA's real-time data are cautioned to consider the unverified nature of the information before using it for decision that concern personal or public safety or the conduct of business.

STATION METADATA