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oaiaioo <br />WATER MANAGEMENT <br />Endnote -- WATER MANAGEMENT--Continued <br />IRRIGAT IDN is the controlled epplicet ion of water to supplement rainfall and support plant growth. The design <br />and managenN:nt of an irrigation system are affected by depth to the water table, the need for drainage, flooding, <br />available water capacity, intake rate, permeability, erosion hazard, end slope. The construction of a system is affected <br />by Large stones and depth to bedrock or to a cemented pan. The performance of a system is affected by the depth of the <br />root zone, the amount of salts or solium, and soil reaction. <br />TERRACES AND DIVERSIONS are embankments or a combination of channels and ridges constructed across a slope to control <br />erosion and conserve moisture by intercepting runoff. Slope, wetness, large stones, and depth to bedrock or to a <br />cemented pen affect the construction of terraces end diversions. A restricted rooting depth, a severe hazard of <br />wind or eater erosion, an excessively coarse texture, and restricted permeability adversely affect maintenance. <br />GRASSED WATERWAYS are natural or roost rutted channels, generally broad and shallow, that conduct surface water to <br />outlets at a nonerosive velocity. Large stones, wetness, slope, and depth to bedrock or to a cemented pan affect the <br />construction of grassed waterways. A hazard of wind erosion, low available water capacity, restricted rooting <br />depth, toxic substances such as salts or sodium, and restricted permeability adversely affect the growth end <br />maintenance of the grass after construction. <br />