I thought that I'd advertise for the McLennan Lake, Saskatchewan area. Here's a link to a map of the area:
http://mapper.acme.com/?ll=55.86761,-10 ... nan%20Lake\,%20Saskatchewan&marker1=55.86684,-104.24446,unnamed
It's a lovely area with lots of small to medium sized lakes with short portages in between. The longest portage that I've done in that area is about 400 metres. Most are 200 m or so.
Ric at Horizon's Unlimited/Churchill River Canoe Outfitters has developed some specialized maps of certain areas. These maps usually include parts of several 1:50 000 sheets and he has marked portage routes, etc.
You can get those through the on-line store at :
http://www.churchillrivercanoe.com/Very few people, too. Give it a try.
Ralph