The primary function of bibliographic citations is to assist the reader in finding the sources used in the writing of a work. To these basic citations, the annotated bibliography adds descriptive and evaluative comments (i.e., an annotation), assessing the nature and value of the cited works. The addition of commentary provides the future reader or researcher essential critical information and a foundation for further research.
French drain. A French drain or weeping tile (also blind drain, rubble drain, rock drain, drain tile, perimeter drain, land drain, French ditch, sub-surface drain, sub-soil drain or agricultural drain) is a trench filled with gravel or rock or containing a perforated pipe that redirects surface water and groundwater away from an area.
Overview. A French drain is a perforated drainage pipe that can help channel groundwater out of an area. These drains are relatively low-maintenance, but they do need to be cleaned out about once a year because dirt and other debris can get into the drain through the holes designed to allow water to flow into the drain.tep 3. Use the garden hose to send a steady stream of water down the French drain. Do not start out with the pressure cleaner because if the drain has a major clog, you will just end up with lots of water firing back in your face.