Jarvis Lake is located in William Switzer Provincial Park, about 5 km west of Hinton on Highway 16 and then 18km north on Highway 40. There are five lakes and a creek in the park, with Jarvis Lake being the southern-most lake. This is a lovely place to stop for a picnic lunch on the way to Jasper.
There is a large day-use area which includes a boat launch, dock, washrooms, playground, swimming area and picnic site. There is also a campground with separate docks.
The lake itself runs north-south (the day-use site is at the south end) with both a NW and NE reach, the latter being quite extensive. The water is very clear and was glassy-calm while were were there (boat wakes excluded!).
There is apparently a canoe route along Jarvis Creek that runs about 4km, starting where Highway 40 crosses the creek near Kelley’s Bathtub and ending at the Graveyard campground. This route can be paddled both way, although we've not tried it.