hello and how are yal. Im not from ark even tho i was born in ft. smith ( so i guess that make me a some of the south). i live in oklahoma. i was looking at the army core nav. chart and ran across something that is buging me. the army has ozark-Jeta taylor lock and dam as lock 12 and Dardanelle as lock and dam 10. if this is so. what happend to lock and dam 11. would think the army would forget a dam or miss number them. the data was updated this year. and if it is an over site. you would think they would have found it by now.