Graham Reservoir Fishing in Washington County, Oregon

• Overview

  Graham Reservoir belongs to Washington County, Oregon. The sea is 36 miles distant. Small at around 15 acres: two anglers spread out cover most of it. It is among the larger waters listed here for Washington County. You are 2.3 miles from Forest Grove. After that come Cornelius at 4.2 miles and Hillsboro at 7.5 miles. No boundary runs near, so the county rules hold throughout.

• Where to Fish on Graham Reservoir

  There is no published depth for this one, so start shallow and work out. Points where the flooded channel swings in are the reliable ones. Inflow corners move water, and moving water gathers fish. Reported across Washington County: common carp, yellow perch, brown bullhead and largemouth bass. Read it as a county summary, not a water-by-water list. Treat Graham Reservoir as a water to read rather than to cover.

• Seasonal Patterns

  The year swings from about 39°F in December to roughly 65°F in August. Warm months push fish deep; cool months bring them back. Shade and hour of day matter more than month. Autumn steadies things again once the heat lets go. It sets the rhythm of the year at Graham Reservoir. Weed growth peaks in late summer and changes where you can fish.

• Tackle & Baits

  Nothing in our records says who may fish here. Public data has parking about half a mile from the shore. For the bass here, soft plastics worked slow along cover and a spinnerbait for searching do most of the work. Gates get locked out of season on water like this. Night access is frequently treated as a separate matter. Failing this one, try North Reservoir, 1.9 miles away. Check the position at Graham Reservoir before loading the car.