| drainage system | 9.22 | The drainage system is old. | ||
| drainage ditch | 5.92 | The drainage ditch may fail. | ||
| drainage pipe | 1.65 | Install drainage pipes. | ||
| drainage canal | 1.38 | The farmers use an intricate system of drainage canals. | ||
| drainage channel | 1.25 | Keep the drainage channel clear. | ||
| drainage problem | 1.18 | Old pipes and drainage problems. | ||
| drainage hole | 1.05 | Use a clean clay pot with a drainage hole. | ||
| drainage area | 0.66 | They inspected the drainage area by the nearby practice football field. | ||
| drainage culvert | 0.59 | As the truck burned, she fled into a field and hid in a drainage culvert. | ||
| drainage work | 0.46 | Some drainage work had to be done. | ||
| drainage facility | 0.39 | All the state-run health centers were flooded and drainage facilities were clogged. | ||
| drainage pattern | 0.33 | Subdivisions can cause crop losses by altering drainage patterns in nearby fields. | ||
| drainage project | 0.33 | But that did not stop the drainage project. | ||
| drainage tunnel | 0.33 | He said the drainage tunnel was drilled through rock under a mountain without any concrete reinforcement. | ||
| drainage tile | 0.26 | Telephone poles, railroad beds and drainage tiles are being removed. | ||
| drainage tube | 0.26 | Mrs. Johnson said doctors removed drainage tubes from his head Sunday. |