The Columbia River has been equipped with locks.
Rockwood Township is a township in Hubbard County , Minnesota , United States .. Township. Township ( United States ). United States. United States. Minnesota. Minnesota. County. List of counties in Minnesota. Hubbard. Hubbard County, Minnesota. Hubbard County. Hubbard County, Minnesota. The population was 469 at the 2000 census .. United States Census, 2000. 2000 census. United States Census 2000. Rockwood Township derives its name from Charles H. Rockwell , an early settler .. Township. Township ( United States )