Sinkhole collapse poses an increasing problem for the engineer and geologist. This is partly because no systematic procedure exists for repairing such collapses. Any successful repair procedure for use in the karst limestones of middle Tennessee should include efforts to identify and control water movement into the collapse site. A geologically based approach to collapse repair that takes advantage of the causal and correlative factors responsible for nearly 100 collapses in the study area and an extensive fluorescein dye-tracing program are described. Corrective procedures deal not only with the collapse itself but with the rerouting, to the extent possible, of runoff and groundwater at the collapse site. A high-permeability, graded rock fill is placed in the collapse, and water movement into the site is minimized.