Burley Lagoon is a picturesque 10,000-acre (40 km²) watershed located on the Key Peninsula in both Pierce County, Washington and Kitsap County, Washington. Approximately sixty percent of the lagoon (marine waters) is in Pierce County and forty percent in Kitsap County. The percentages in each county are reversed for the watershed uplands. All of the commercial shellfish acreage, which is owned by Western Oyster Company, is in Pierce County.