No damage:

ginkgo biloba, planted 2009
a. saccarhum 'green mountain', planted 2011
celtis occidentalis, planted 2009
robinia pseudoacacia 'purple robe', planted 2011
rhus typhina, planted 2011
rhus aromatica, planted 2011
'golden spice' pear, planted 2011

winterkill:

celtis tenufolia (to snowline)
morus alba (to snowline)
'valiant' grape (to two feet above ground)

RIP?

castanea dentata (survived much harsher winter of 2010-2011)

?

fargesia rufa (tops died, but roots are still alive -- waiting for new growth!)

project for the year: taxodium distichum. This was a 'mistake' tree for a local nursery...and the thing would have died anyway if I hadn't bought it. My prospects of overwintering this are minimal...but I've heard that baldcypress is hardy to Ottawa. Plus, you never know.

Good job on the ginko, I had one in suburban Edmonton but it didn't make it through its first winter. Some growing at U of A though, and I know of a healthy older one in Drumheller, which must be about equal to your zone.

I've got a sugar maple that I planted as a seed almost 20 years ago... it's about 5 m tall now but is growing in a bush form since in bad winters it takes some serious winterkill (I don't think it had any winterkill this past winter).

I've tried black locust but they didn't do much for me... lived a few years, growing a foot or two each summer, then killing to snowline. For my relatives near Ottawa (which was my seed source) they grow like rockets. My planting location wasn't the best though...an increasingly shady garden.

Haven't tried sumac myself, but there is one in my neighbourhood that survives and looks good, though it isn't anywhere near as vigorous as the ones I used to see growing wild in Ontario (which is probably good, since they were almost weedy...)

I think the Valiant grape will do okay for you... I get a lot of top kill each year, but they survive and grow so amazingly vigorously over the summer that they end up huge every summer... I end up having to prune them with shears several times per summer just to keep them from overtaking everything. Plus they ripen early for a northern grape, a major consideration (I've had the crop ripen every year with Valiant, no exceptions).

Very cool that you were trying an American chestnut, too bad it died in its second winter. I've always wondered how they might do in Alberta, too bad they don't make it long-term.

Keep us informed on how the bamboo recovers and performs this summer... that's another one I've always wondered about but haven't tried.

Now you just need to try Horse chestnut, butternut, black walnut,... :-)

I'll definitely post pictures of the trees later in the season when they're in full leaf. I have noticed that older trees seem to survive colder temperatures much better than the seedlings; all of my trees that died were less than two feet tall.