Users can filter the information by location, the company involved and volumes released in spills.
The map shows 692 incidents across Canada since 2008 — 45 of those deemed "significant."
It denotes the type of incident — whether that be an oil spill, serious injury or fire — with a colour-coded dot over the location.
The NEB says map updates will be done quarterly, with the next one slated for July.
Peter Watson, who has chaired the federal energy watchdog since last August, says the new tool shows the board is increasing its commitment to transparency.
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