Seaquest State Park

Silver Lake, sometimes Silverlake, is an unincorporated community in Cowlitz County, Washington, in the southwestern portion of the state. Silver Lake is located 6 miles (9.7 km) east of Castle Rock along Washington State Route 504, which is also known as the Spirit Lake Memorial Highway. The area considered Silverlake is about 6 miles (10 km) east of Interstate 5 (I-5) and is approximately 50 miles (80 km) from Portland, Oregon, to the south and Seattle about 110 miles (180 km) to the north. The closest cities to the subject property are Castle Rock, six miles (10 km) to the west, and Toutle, four miles (6 km) east. The Silver Lake community takes its name from the lake of the same name, which it lies on the northwest shore of. The Silver Lake community is part of the Toutle Lake School District, a K-12 school district of about 600 students. Silver Lake is about 30 miles (48 km) west of Mount St. Helens and near the Mount St. Helens National Volcanic Monument, which lies at the end of the Spirit Lake Memorial Highway. The eruption of Mount St. Helens on May 18, 1980 was the deadliest and most economically destructive volcanic event in the history of the United States. The WDFW has planted grass carp in this lake. The grass carp have lived far longer than expected, and have destroyed much of the beneficial native vegetation. It is now legal to fish for or retain grass carp.Silverlake also describes the associated marsh. It is home to a nature trail, and the visitor center for the Mount St. Helens National Volcanic Monument.

KLYK (94.5 FM) is a radio station broadcasting an Adult Top 40 format. Licensed to Kelso, Washington, United States, the station is currently owned by Bicoastal Media Licenses IV, LLC and features programming from Premiere Networks and Westwood One. The station focuses on Today's Best Music with the slogan "Southwest Washington's Hit Music Channel."

Castle Rock is a city in Cowlitz County, Washington, United States. Located between the Willapa Hills and the western base of Mount St. Helens, Castle Rock is at the heart of Washington timber country in the Pacific temperate rain forest. Castle Rock is part of the Longview, Washington Metropolitan Statistical Area; the population was 2,446 as of the 2020 census.

The Toutle River is a 17.2-mile (27.7 km) tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, 20 miles (32 km) upstream of the larger river's confluence with the Columbia River.The river was altered by the 1980 eruption of Mount St. Helens, a nearby volcano, and subsequent flows of ash and other debris. It was further altered by dredging to remove sediment, and by construction of the Toutle River Sediment Retention Structure on the North Fork Toutle River.

Castle Rock High School is a rural public high school in Castle Rock, Washington.

Arkansas Creek is a stream in the U.S. state of Washington.Arkansas Creek was named after the state of Arkansas, the native home of a large share of the first settlers.

Pleasant Hill is an unincorporated community in Cowlitz County, Washington, south of the city of Castle Rock. Pleasant Hill is located along or near Pleasant Hill Road between Castle Rock and Ostrander. The northern end of Pleasant Hill community is part of the Castle Rock School District, while the southern end is part of the Kelso School District.

Sandy Bend is an unincorporated community in Cowlitz County, Washington, south of the city of Castle Rock, west of Washington State Route 411, and to the west of the Cowlitz River. Sandy Bend is located along or near Sandy Bend Road between Castle Rock and West Side Highway. The Sandy Bend community is part of the Castle Rock School District, a K-12 school district of about 1,300 students.

The Laughlin Round Barn near Castle Rock, Washington is a round barn that was built in 1883. It was listed on the National Register of Historic Places in 1986.

Ostrander is an unincorporated community in Cowlitz County, Washington, north of the city of Kelso. Ostrander is located north on North Pacific Avenue from exit 42 of Interstate 5. The Ostrander community is part of the Kelso School District, a K-12 school district of nearly 5,000 students.

KUKN (105.5 FM, "Cookin' Country") is a radio station broadcasting a country music format. Licensed to Longview, Washington, United States, the station is currently owned by Washington Interstate Broadcasting, Inc.

KLWO (90.3 FM, "K-Love") is a radio station broadcasting a Contemporary Christian music format. Licensed to Longview, Washington, United States, the station is currently owned by Educational Media Foundation.