The park sits adjacent to the Sagami Dam, which was the first multipurpose dam constructed in Japan following World War II.
Lake Sagami was originally formed in 1947 by damming the Sagami River to supply electricity and water to the growing Yokohama and Kawasaki metropolitan areas.
The lake was a venue for the canoeing events during the 1964 Tokyo Summer Olympics.
The park grounds contain a memorial stone and monument dedicated to the history of the lake's development and the displaced communities.
Sagamiko Park is a public recreational space situated on the northern shore of Lake Sagami, an artificial reservoir created by the Sagami Dam. The park provides direct access to the water for swan-shaped pedal boat rentals and sightseeing cruise vessels. Visitors frequent the area for lakeside picnicking, fishing, and viewing the seasonal transition of cherry blossoms and autumn foliage. The terrain is largely flat and paved, facilitating access to the central plaza and wooden observation piers. The area remains a local hub for outdoor relaxation and serves as a gateway to the surrounding Tanzawa-Oyama mountain trails.
The wooden pier extending into the lake provides an unobstructed view of the dam and the forested mountain backdrop.
Bring a waterproof picnic blanket as grass areas can remain damp near the shoreline.
Visit on a weekday to avoid significant crowds that gather for boat rentals during peak spring and autumn weekends.
Check the wind conditions before planning a boat rental, as the lake surface can become choppy for pedal boats.
Attempting to swim in the lake, as swimming is prohibited; relying solely on mobile signal strength, which can be spotty in the surrounding valley.
Boat rentals and park facilities may be suspended during inclement weather or typhoon season.
Carry out all trash as there are limited public bins; avoid feeding wild birds.
