Skip to main content
Most King County offices will be closed on Monday, for Martin Luther King Day.  
King County logo

Before Development

In its natural state, the estuarine environment provides a rich nursery for salmon and other species.
Undeveloped Stream Mouth

After Development

The estuary is severely impacted by development in the watershed. The construction of impervious surfaces such as roads, parking lots and buildings increases stormwater runoff, which scours rivers and has water quality impacts on nearshore habitat.
Developed Stream Mouth

> Next: Accreting Beach, Before and After Development