Table:
text: List of locks and dams of the Ohio River
Downstream, Pittsburgh to Olmsted
Downstream, Pittsburgh to Olmsted
Locks_Dam Location_L_ River_Mile Lock_Side Lock_Lift_Drop_in_feet Pool_Length_miles
Robert C. Byrd Locks and Dam Gallipolis Ferry, West Virginia 279.2 LDB 23 41.7
Greenup Locks and Dam Greenup, Kentucky 341.0 LDB 30 61.8
Captain Anthony Meldahl Locks and Dam Foster, Kentucky 436.2 RDB 30 95.2
Markland Locks and Dam Warsaw, Kentucky 531.5 LDB 35 95.3
McAlpine Locks and Dam Louisville, Kentucky 606.8 LDB 37 75.3
Cannelton Locks and Dam H Cannelton, Indiana 720.7 RDB 25 113.9
Newburgh Locks and Dam Newburgh, Indiana 776.1 RDB 16 55.4
John T. Myers Locks and Dam Mt. Vernon, Indiana 846.0 RDB 18 69.9
Smithland Locks and Dam H Hamletsburg, Illinois 918.5 RDB 22 72.5
Locks and Dam Number 52 Brookport, Illinois 938.9 RDB 12 20.4

Question: In the list of Ohio River locks and dams, what is the total number of River Miles in Greenup, Kentucky?