Ottawa is actually fairly seismically active, with quakes happening on average once every 5 days. Those are usually minor, and not felt by people. In Canada, the Geological Survey has us ranked third at risk among urban centres, after Vancouver and Montreal. You can see the estimated hazard, and take a look at previous local earthquakes here.
The USGS (US Geological Survey) also tracks earthquakes worldwide and claims 'real-time', but the Ottawa area tremors aren't up yet.