I called the parks department and you can pick one up there Monday through Friday. She said they were in from 7:30 in the morning till about 4 in the afternoon.
Here is the address.

1301 St. Charles Street
When you are in jasper follow the main road out towards Ireland. After the stop light at the top of the hill keep going straight till you get to the next light. At that light turn right and go till you hit the stop sign. The parks department is on the corner.

Hope that helps. On the weekends there is a guy at the ramp sometimes.
Good luck.