Rosario Seaplane Base
Rosario Seaplane Base is a public-use seaplane base located adjacent to Rosario on Orcas Island in San Juan County, Washington, United States.
It is owned by the Rosario Resort.
Monponsett Pond Seaplane Base
Monponsett Pond Seaplane
Base is a privately owned, public- use seaplane base located two miles( 3 km) northwest of the central business district of Halifax, a town in Plymouth County, Massachusetts, United States.
Merrimack Valley Seaplane Base
Merrimack Valley Seaplane Base is a privately owned, public-use seaplane base located three miles (5 km) west of the central business district of Methuen, a city in Essex County, Massachusetts, United States.
Lake Woahink Seaplane Base
Lake Woahink Seaplane Base , is a public seaplane base located at Woahink Lake, 4 miles (6.4 km) south of the city of Florence in Lane County, in the U.S. state of Oregon.
Brooks Seaplane Base
Brooks Seaplane Base is a city-owned, public-use seaplane base located in the city of Coeur d'Alene, Kootenai County, Idaho, United States.
It is located on Lake Coeur d'Alene.
Scotts Seaplane Base
Scotts Seaplane Base is a public use seaplane base located in the community of Crane Lake, in Saint Louis County, Minnesota, United States.
It is privately owned by Darrell Scott and is also known at Scott's Seaplane Base.
Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, Scotts Seaplane Base is assigned CDD by the FAA but has no designation from the IATA (which assigned CDD to Cauquira, Honduras).
Kenmore Air Harbor Seaplane Base
Kenmore Air Harbor Seaplane Base, or Seattle Lake Union Seaplane Base, is a seaplane international airport on Lake Union, Washington, U.S., north of Downtown Seattle.
Friday Harbor Seaplane Base
Friday Harbor Seaplane Base is a public use seaplane base located adjacent to Friday Harbor, on San Juan Island in San Juan County, Washington, United States.
It is owned by the Port of Friday Harbor.
Beaver Lake Seaplane Base
Beaver Lake Seaplane Base is a state owned, public use seaplane base located four nautical miles (5 mi, 7 km) northeast of Big Lake, in the Matanuska-Susitna Borough of the U.S. state of Alaska.
Elfin Cove Seaplane Base
Elfin Cove Seaplane Base is a state-owned public-use seaplane base located in Elfin Cove, on Chichagof Island in the Hoonah-Angoon Census Area of the U.S. state of Alaska.
Scheduled airline service is subsidized by the Essential Air Service program.
The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a "general aviation" facility (the "commercial service" category requires at least 2,500 enplanements per year).
As per the Federal Aviation Administration, this airport had 196 passenger boardings (enplanements) in calendar year 2008, 265 in 2009, and 305 in 2010.

Question: Are both Elfin Cove Seaplane Base and Friday Harbor Seaplane Base located in the same country?
Answer: yes