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<br />.. <br /> <br />Preliminary descriptive material prepared in the research project for <br /> <br />the basic lag curves shown on Plate 9, main text, follows. <br /> <br />Curve A Foothills-type terrain, <br /> <br />a. C value 1. 60 <br /> <br /> <br />Set range of C values; ~ 1;0 to 2.5 <br /> <br /> <br />b. Topographical features and cover. <br /> <br /> <br />Steep slopes, V-shaped valleys. <br /> <br /> <br />Stream lengths usually short. <br /> <br /> <br />Sparse to good cover .of grass, brush, some timber. <br /> <br />Practically no litter; surface may have rock fragments. <br />'c. Runoff characteristics. <br />Rapid surface runoff, negligible interflow. Usually <br />intermittent stream. Almost all runoff 'caused 'by rain. <br /> <br />Curve B Mixed types of terrain. <br /> <br />a. C value 3.75. <br />Set range of C values; 2.50 to 5.00. <br />b. Topographical features and cover. <br /> <br />Slopes, moderate to steep. <br /> <br />Valleys, some U-shaped, most tributaries V-shaped" <br />'Efficient drainage pattern. <br />Vartied cover, scattered to heavy timber with some litter. <br />Timber usually increases in density with rise in <br />elevation <br /> <br />9 <br /> <br />:"':.. <br /> <br />. 1!II"'i <br /> <br />. <br />