Reservable picnic shelters are available at several Corps of Engineers recreation areas along the Mississippi River. They are perfect for birthday parties, family reunions, or other special occasions. Many of the shelters can be reserved up to one year in advance by visiting www.recreation.gov or calling 1-877-444-6777. Shelters without online registration may still be reserved by contacting the phone number listed. The cost to reserve these sites is only $25.00.