Lake Armstrong is a small 31 acre lake located a mile north of Arlington. The boat ramp is steep but paved with a concrete ramp, along with a good turn around at the bottom. Parking is limited to about 20 vehicles. There are no public toilets but during season there is usually a porta potty on-site. There is some OK bank fishing access. It is mostly a trout lake with some large mouth bass. To reach the lake, take I-5 to the SR 530 exit to Arlington. Take Highway 9 going northbound from town for approximately 1 mile. Turn up a narrow (one lane) road and follow the signs to the lake. The WDFW access is on the left.