Laserfiche WebLink
<br />. .~ <br /> <br />Permeability and depth are major soil characteristics that affect the <br /> <br />volume of water passing through the profile and carrying salt to the <br /> <br />river. The combined effect of permeability, defined as a water intake <br /> <br />rate, and depth is. represented by the moisture holding capacity of the <br /> <br />soil. Combinations of intake rates and moisture holding capacity were <br /> <br />developed to show which soils might be considered as significant <br /> <br />contributors to. the salt loading problem. The soils were grouped by <br /> <br />three classes of intake and three classes of moisture holding capacity. <br /> <br />Those soils with high intake rates and low moisture holding capacity are <br /> <br />considered to contribute most significantly to salt loading while those <br /> <br />with low Intake and high moisture holding capacity are not so critical. <br /> <br /> <br />These combinations, the acreages of soils involved, and the effect on <br /> <br />salt loading classified as severe, moderate, and slight are shown in <br /> <br />Table I. Amore detailed listing by mapping units identifies the more <br /> <br />critical soils and is shown in Table 2. <br /> <br />In addition to soil characteristics that contribute to seepage and deep <br /> <br />percolation, the on-farm inventory has identified about 2,000 acres of <br /> <br />cultivated land that has become water-logged due to poor subsurface <br /> <br />drainage conditions. <br /> <br />17 <br /> <br />