Obed is a big lake (maybe 15-18km of shoreline). We went right (east) off the launch, thinking that the inflowing and outflowing creeks would likely be the most interesting part of the shoreline. Both creeks and then cutting back across the lake was about 5km (so an hour and change).
The water was amazingly clear and clean and there was no wind until the very end. Obed is big enough that a stiff breeze means waves and splashing and a generally hard paddle.
The shoreline is mostly fir trees and scrub and the water seemed high (into the grass in places).
The inflowing creek was a fun little exploration. In the picture below, the bird is fleeing a coyote (in the bush centered in the shot but almost impossible to see) that was stalking it.
We paddled past some kind of camp towards the outflow. On google maps, this looked like a beaver dam.
Overall, a very nice paddle in great weather and I'm happy to see my recollection of the lake was incorrect. There are two other lakes in the park, but both look like they'd entail more of a hike than I'm up for!