Laserfiche WebLink
<br />t.; <br />.00 <br />Q <br />~ <br />c) <br />,....) <br />-.- <br /> 2 <br /> 3 <br /> 4 <br /> 5 <br /> 6 <br /> 7 <br /> 8 <br /> 9 <br /> 10 <br /> 11 <br /> 12 <br /> 13 <br /> 14 <br /> 15 <br /> <br />Permeabi 1 ity and depth are major soi 1 characteristic,; that affect the <br /> <br />volume of water passing through the profile and carrying salt to the <br /> <br />river. The combined effect of permeabil ity, 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 />These combinations, the acreages of soils involved, and the effect on <br /> <br />salt loading classified as severe, moderate, and sl ight are shown in <br /> <br />Table 1. A more detailed listing by mapping units identifies the more <br /> <br />critical soils and is shown .in Table 2. <br /> <br />16 In addition to soil characteristics that contribute to seepage and deep <br /> <br /> <br />17 percolation, the on-farm inventory has identified about 2,000 acres of <br /> <br />18 cultivated land that has become water-logged due to poor subsurface <br /> <br />19 drainage conditions. <br /> <br />17 <br />