This is a list of Natural Resources Conservation Areas (NRCAs), part of the Washington Natural Areas Program managed by Washington Department of Natural Resources.

Clallam County

Shipwreck Point NRCA: This site includes one of the last, easily accessible, open stretches of beach on the Strait of Juan de Fuca.

Clark County

Lacamas Prairie Natural Area: This combined natural area preserve (NAP) and natural resources conservation area (NRCA) protects the best known remnant of the Willamette Valley wet prairie ecosystem in Washington. Washougal Oaks Natural Area: This combined NAP/NRCA: protects the largest high-quality Oregon white oak woodland in western Washington.

Cowlitz County

Merrill Lake NRCA: This site contains a mixed conifer/hardwood forest along a shoreline, providing habitat for birds of prey.

Grays Harbor County

Elk River NRCA: This area is the largest, highest quality estuarine system remaining in Washington or Oregon.

Jefferson County

Clearwater Corridor NRCA: This site represents a mature coastal forest, protects aquatic-riparian habitat and provides elk habitat. Devils Lake NRCA: This NRCA: contains two freshwater wetlands and two sphagnum bog communities. South Nolan NRCA: This area is an old-growth temperate forest with scattered wetlands. Some trees are more than 500 years old.

King County

Middle Fork Snoqualmie NRCA: This area protects old growth Douglas-fir forest, subalpine lands, mid-elevation lakes, and habitat for marbled murrelet, northern spotted owl and native mountain goat. Rattlesnake Mountain Scenic Area: This area protects cliff terrain, wildlife habitat, numerous riparian systems and old growth forest. Mount Si NRCA: This NRCA: supports a variety of wildlife including native mountain goats, cougar and black bear. West Tiger Mountain NRCA: This NRCA: provides important habitat for large and small wildlife including reptiles and amphibians.

Kitsap County

Stavis NRCA: This natural area includes the best known quality example of the Douglas-fir–western hemlock/evergreen huckleberry forest community, and one of the only extensive mature and old growth forests in the Puget Sound lowlands.

Klickitat County

Klickitat Canyon NRCA: This NRCA has views of the Klickitat River, and is home to a variety of wildlife species. White Salmon Oak NRCA: This site represents of all of the Oregon white oak communities found in the White Salmon River drainage.

Lewis County

Tahoma Forest NRCA: This site protects the ecological value of a structurally complex old growth forest.

Okanogan County

Loomis NRCA: This NRCA: protects twelve plant species of concern, as well as important habitat for nine wildlife species.

Pacific County

Ellsworth Creek NRCA: This preserve provides important breeding habitat for the federally threatened marbled murrelet. South Nemah NRCA: This site contains western red cedar and Sitka spruce and habitat for marbled murrelets and spotted owls. Teal Slough NRCA: This site supports a remnant coastal old growth forest and is home to marbled murrelets and spotted owls. Naselle Highlands NRCA: This site contains mature conifer forest habitat including platform trees that support marbled murrelet nesting sites.

Pierce County

Ashford NRCA: This site protects mature, structurally complex conifer forest and helps provide habitat for northern spotted owls.

San Juan County

Cattle Point NRCA: This NRCA: is an important research site with a day use recreation and interpretive area. .

Skagit County

Cypress Island NRCA: This is the last largely undeveloped island in the San Juans, providing a reminder of pre-settlement Washington. Granite Lakes NRCA: This area contains 160-year old stands of silver fir, mountain hemlock and associated plant communities. Hat Island NRCA: This conservation area provides habitat for bald eagles, sea and shore birds.

Skamania County

Table Mountain NRCA: This area contains relatively undisturbed upland and wetland forests, mountain meadows, and rare plants. Stevenson Ridge NRCA: This area includes structurally complex, old-growth conifer forest that serves as nesting habitat for the northern spotted owl, federally listed as "endangered."

Snohomish County

Morning Star NRCA: This NRCA: features low to high elevation terrain; meadows, forests, and exposed rocks and cliffs. .

Spokane County

Dishman Hills NRCA: This site is notable for dramatically sculpted terrain left by the floods which issued from Glacial Lake Missoula.

Thurston County

Woodard Bay Natural Resources Conservation Area: The site protects habitat ranging from shoreline to wetlands to mature second-growth forest.

Wahkiakum County

Hendrickson Canyon NRCA: This site contains the county's last high quality, mature and old growth western hemlock forest. Skamokawa Creek NRCA: This site contains mature conifer forest habitat including platform trees supporting marbled murrelet nesting sites.

Whatcom County

Lake Louise NRCA: This site includes a very large, active beaver pond and various forest communities. Lummi Island NRCA: This site provides an uneven-aged mixed forest, making it very appealing to birds of prey.

Yakima County

Klickitat Canyon NRCA: This NRCA has views of the Klickitat River, and is home to a variety of wildlife species.

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