A small transport flight crew on the landing roll at LQK exited Runway 23 at what they believed to be the last available exit as shown on their NOS airport page.

Narrative

While landing Runway 23 at Pickens County Airport (LQK) the pilot in command and pilot flying landed the aircraft and attempted to exit the runway near the end of the runway; which he thought was the last taxiway. Realizing the aircraft was traveling at too high of a speed; he attempted to remain on the runway by inputting right rudder to keep the aircraft on the hard surface. The NOS charts which we were using only depict one taxiway at the end of Runway 23 at LQK; when in reality there are two. It is my assumption as the pilot not flying that the pilot flying assumed the first taxiway he saw was the end of the runway; not realizing he had ample time and distance to further slow the aircraft down and exit the runway at the end of the runway; which is where the final taxiway is located and where it is depicted on the NOS charts airport diagram. I believe proper information on the charts could have changed the outcome of this event as to avoid confusion on a short runway for aircraft; which utilize the full length of the runway at LQK.