A rest area off highway 16. Over 15 sites, many big enough for big rigs. Wooded with grassy areas to park. A dump station, picnic tables, trash buckets. Very little signage... We were the only ones here on a Tuesday night in June. One can park in the back and minimize the road noise, of which there was very little overnight.
"Free Dump located right on TransCanada Highway between Winnipeg and Regina"
Located just outside the town of Moosonim on the south side of the TransCanada highway with access from both directions. Dump station is freely accessible with no lock and no sign requesting payment. Located adjacent to the Tim Hortons. Overnight truck parking also at this location on dirt surface - it was quite dusty when we were there.
We stayed here because it was close to town. We knew that the highway noise would be an issue, but were actually pleasantly surprised at how minor it was. The area itself was surprisingly well kept, the portapotties were recently serviced and garbage picked up. There is a sani-dump but we didn't use it (no RV). A couple of folks with goosenecks...