Mailing Address:
U.S. Army Corps of Engineers
Clarence Cannon Dam & Mark Twain Lake
20642 Hwy J
Monroe City, MO 63456
Telephone:
Project Office: (573) 735-4097
Visitor Center: (573) 565-2112
Fax: (573) 735-2750
Email:
marktwaininfo@usace.army.mil
Office Hours:
Monday - Friday, 7:30 a.m. - 4 p.m.
Visitor Center Hours:
Open daily, 9 a.m. - 5 p.m.
Camping Reservations:
1-877-444-6777