The seawall at Lowman Beach is sagging and cracked and has been since last November. Seattle Parks is conducting studies as to the best way forward, which may still include removal of the wall and restoring the beach to a more natural state.
Warmer weather brings people to the beach and while it has been largely dominated by the construction of the Murray Basin CSO across the street. Lowman Beach Park still sees a lot of people visiting. But the seawall there began moving and developed severe cracks leading Seattle Parks to cordon off the area as the West Seattle Herald reported last fall. Karen O'Connor of Seattle Parks (SPR) explained the situation:
"The Lowman Beach Seawall shifted in position last Thanksgiving weekend and through a portion of the month of December, 2015. The wall tilted out towards the water due to scouring of the foundation soils, likely due to tidal activity. Currently the wall is resting on the dense soils underlying the rocky beach, the interface of which can be seen at low tides. The majority of the movement occurred during the last month of 2015. Seattle Parks and Recreation (SPR) has been monitoring the wall since Thanksgiving by surveying the tops of the wall for horizontal and vertical movement. Once the wall came to rest of the denser soils at the end of 2015, we have only noted approximately 0.5 inch of movement.
The conditions behind the wall change with each high tide as water flows behind the wall. Although the soils behind the wall shift, there has been only minimal soil loss since the majority of movement. Currently, SPR asks park goers to stay off the wall.
We are preparing to apply for grants to conduct a coastal geomorphology study of the area to assist with options and analysis of the seawall to determine what the best course of action is. The condition of the wall will continue to be monitored during this time for any signs of change."
SPR previously said "A permanent correction may include a project in which we would partner with Seattle Public Utilities (SPU) to remove the seawall and restore the site to natural beach area, perhaps with a daylighted "creek bed."