Roxhill Park’s  Bog Natural Area, 9234 29th Ave SW, Seattle, WA 98126

Owner: Seattle Parks & Recreation

At the headwaters of Longfellow Creek, is an ancient wetland bog acts as a water filter for the storm water run-off which supplies the bog and creek. It’s one of the few urban bogs we have in the greater Seattle area and supports the 3.5-mile long creek that flows through the West Seattle before entering in the Duwamish River.

The creek system drains a 2,000-acre watershed and is one of the few year round free-flowing creeks in Seattle. As the drainage basin for sixty surrounding acres, Roxhill Bog collects sediments and pollutants from rain and storm water run off. Plants absorb some pollutants while the spongy peat soil helps filter sediments, essential for providing healthy water quality. Longfellow Creek is one of Seattle’s few salmon spawning creeks.

This rare and ancient bog began to form (it’s estimated) around 7,986 B.C. during the Paleolithic–Mesolithic period. Biologist estimates that the 6 – 10 feet of peat which forms the bog has taken over 10,000 years to accumulate.

The bog was supplied by 2 main tributaries before the development of the area. With much of the area as wetland and bog, as far east as 16th Ave SW, even up the hills.

As the area became home to more settlers, the land was cleared for farming. In the 1930s this area held productive produce and dairy farms One of the primary farms was owned by the Kodama family, Japanese farmers forced to relocate to internment camps during World War II.

The 1960s with the commercial and residential development of the area saw the wetland and bog donated to the Seattle Parks which created a traditional park by draining of it. It was recognized in the 1990s the need to restore the wetland and bog, not only from regaining the effectiveness of the Longfellow Creek’s headwaters in its system but to also address ball fields which were saturated most of the year with water. Efforts in the early 2000’s were to restore the natural area, making it a functional bog again. It still has hydrology challenges with low water flow to support the bog’s eco-system.

Bird Watching The bog attracts a variety of woodland birds, which varies depending on the season.

Walking The bog has wide, flat paths through out it providing easy access for people of all abilities.

Scott Blackstone, Friends of Roxhill Bog
206- 484-3247