Yes, you do need to file an FBAR because your Canadian account was over $10,000 during part of the 2017 tax year.
Here are the Rules:
If you have a Foreign Bank Account you must report this on your tax return. Every taxpayer must disclose whether or not the taxpayer had a financial interest, or signature authority over, a financial account or trust, in a foreign country. If your answer is Yes, then this information is reported on Part III of Schedule B.
If the value exceeds $10,000 at any time during the year, then FBAR reporting is required. See the TurboTax FAQ below.
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