Tanner Springs Park

What is now known as the Pearl District was once a wetland and lake fed by streams that flowed down from the nearby hills in southwest Portland. These wooded hillsides provided a natural filter for the streams, cleansing the water as it made its way to the Willamette River. The springs from Tanner Creek, named for the tannery built by pioneer Daniel Lownsdale in 1845, flowed into the shallow basin of Couch Lake, now the area surrounding Tanner Springs Park. As the population of Portland grew in the late 19th century, Tanner Creek was rerouted through an underground system of pipes to the Willamette River. The lake and the surrounding wetland were eventually filled to make way for warehouses and rail yards which in turn were replaced by residences, shops, and public spaces. Today, the park sits about 20 feet above the former lake surface.

From the beginning of the planning efforts for the Pearl District in the early 1990s, the creation of a network of open spaces was an important goal of both the neighborhood and the City. In 1998, a conceptual plan for the new parks and open spaces was proposed by the Tanner Creek and Water Feature Steering Committee and approved by City Council. Those recommendations served as a point of departure for planning the district's parks.

In June 1999, Peter Walker & Partners, a landscape architecture firm, was retained to provide concepts for three new parks between Tenth and Eleventh Avenues in the River District. They developed and refined plans for the parks with input from a Project Steering Committee and two public workshops. The final plan is characterized by a series of recurring elements which strengthen the connection between each of the three parks. Jamison Square was the first to be developed.