I think igot_it's intel is solid: I'd dig a bit deeper in these boards and find a slough off the Willy. With this warm weather this time of year you could get into some bonkers fishing. If you can drive a half hour, Delta Ponds in Eugene have some decent sized bass. And massive carp too if that wets yer whistle. Fern Ridge is another option (as mentioned)--I've seen plenty of bass in the Amazon Canal arm approached by Fir Butte road (very easy to map out). The Long Tom evidently has bass in it, especially in the lower sections, though I've never caught anything there other than carp, crappie, and bullhead.