Martha Lake is located approximately one mile east of Interstate 5 at 164th St SW. While it is close to Lynnwood, it is actually right next door to Mill Creek. Take the 164th St SW exit and turn left at the Shell station. The road will take you straight to a launch and park. The lake is just short of 60 acres and offers planted trout, bass, sunfish and perch, though I have never seen nor caught anything but trout. Its depths range from 20 to 30 feet in most of the south end and gets to 50 feet in the northern third of the lake were the feeder stream inlets to the lake.It has a public park at the south end with two fishing docks, playground equipment and toilets and a small public launch with limited parking immediately east and adjacent to the park. The perimeter of the lake is lined with homes.
Martha receives lots of pressure early in the season but the take is mainly the smaller hatchery fish. As the pressure wanes during the spring, the fishing gets better and better until the water warms up in July.
Although the dock fishermen do quite well with powerbait and/or worms, I have always stuck with bugger and leach patterns sometimes tipped with worm and trolled really slow.
When trolling I have had the best luck with three routes. Start trolling straight out from the launch (headed west) and when you are about 2/3 across the lake begin a loop toward the park which will take you in front of the fishing piers. Stay out at least a hundred yards from the piers and pass in front of the launch area. You can repeat this route as it is usually quite productive but I often continue down the east shore and stay about 100 to 200 yards off the shore until I'm about halfway down the lake. There is a covered shed on a dock and there is usually someone still fishing in front of that shed. Make a tight loop through that area and let your lure/bait drop on the inside. This is a good hole. Then move on and head across the lake (west) toward the tall poplar tree that has a blue trampoline on the shore. Again, make a slow loop in front of that area in the north end of the lake. This area is the deeper part of the lake and seems to hold the bigger fish (triploid plants have been taken here). If you prefer or the wind dictates, head back in a reverse of the trolling pattern or hang around in your favorite area.
In my experience and by all reports from others that I have talked to, trolling up the west side doesn't produce fish very often. I have no idea why.
This lake lies right next to a major highway and the sounds of sirens and trucks often disturb an otherwise peaceful setting, however it offers good fishing in a convenient location.