. Bulletin. Agriculture -- New Hampshire. TILE DRAINAGE 27 should be had as possible, as they are always a source of trouble. Next locate the main, having it follow the line and direction of the lowest lying ground. This can be done by noticing the channel in which the greatest amount of surface water tends to run after a heavy rain. The main will thus be likely to have a location somewhere near the center of the area drained rather than on one side of it. / Fig. 2. Two different arrangements of drains. Of course, when this is done, the laterals entering from both sides drain a certain amo
. Bulletin. Agriculture -- New Hampshire. TILE DRAINAGE 27 should be had as possible, as they are always a source of trouble. Next locate the main, having it follow the line and direction of the lowest lying ground. This can be done by noticing the channel in which the greatest amount of surface water tends to run after a heavy rain. The main will thus be likely to have a location somewhere near the center of the area drained rather than on one side of it. / Fig. 2. Two different arrangements of drains. Of course, when this is done, the laterals entering from both sides drain a certain amount of ground already drained by the main, but as the main in this case is sup- posed to be in the lowest ground most needing drainage, the extra amount does no harm. On a comparatively flat piece of ground, where there are no particularly low-ly- ing channels, it is better to locate the main at one end or side and place the laterals in parallel lines at nearly right angles to it. These two arrangements are illustrated in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New Hampshire Agricultural Experiment Station. [Hanover, N. H. ] : New Hampshire Agricultural Experiment Station
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