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<br />36 <br />Ba.~ed on these observations it is highly improbable that reclamation failure <br />wand occur at the Hotgg Mine, even under the most extrane climatic conditions, <br />unless the vegetation was not managed properly. <br />Streamflow Generation <br />Zhe ultimate source of all t+*+~mflcxa is precipitation. However <br />precipitation water may be involved in other storage or movement processors. <br />Average annual precipitation is usually a reliable characteristic for an <br />area when long terms records are available (ffiansat et al., 1981). Annual <br />precipitation is not sufficient to form generalized hydrologic cnirlusions <br />thouc~, since water yield or basin runoff fr+am irrlividual storms is variable and <br />is affected by many factors. Water yield fry individual storm events is more <br />often a function of the storm type on rangelands, given the narrow range of <br />antecedent soil moisture conditions. <br />Precipitation may fall directly into the stream ~*+*+P~ or beanie an <br />addition to streamflaa by soil water recharge (infiltration) or Overland flora. <br />Precipitation may also be interoepted by leaves, twigs, stems or soil surface <br />organic matter and be returned to the atmosphere as water vapor. ZhLS process ].S <br />lanwn as uitesveption aryl does not c~tribute to soil moisture rec#~arge or <br />cfroamPl pw CJETIeL-dtlOn. <br />Once the interception capacity of a plant is exi~eded (mm) subsequent <br />precipitation may follow the plant stem to the soil surface (stemflow) or drip <br />f~ the foliage to the soil surface (thr~oughfall). 'These processes are subject <br />to evaporative lasses, but generally contribute to soil moisture recharge. 2btal <br />interception loss for a stor m is a function of the storage capacity and the <br />number of sh ower-- per storm. Water storage capacity or interoe{~tion of gra~coc <br />may be pnopa rtional to the p roduct of average height and percent graced Dover <br />