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<br /> <br />~ <br />TpC (Tl) <br /> <br />TpB (T2) <br /> <br />-- (T ) <br />3 <br /> <br />\C (T4) <br /> <br />T (--) <br />LB <br /> <br />\C50 (T5) <br /> <br />(T6) <br /> <br />(T7) <br /> <br />TR <br /> <br />(--) <br /> <br />TC <br /> <br />(TS) <br /> <br />TE <br /> <br />(Te) <br /> <br />Table 5 <br /> <br />Watershed Response Time <br /> <br />Definition <br /> <br />Time to Peak--Time interval be- <br />tween the centroid of rainfall <br />excess and peak of the direct <br />runoff. <br /> <br />Time to Peak--Time interval be~ <br />tween the beginning of rainfall <br />excess and the peak of the <br />di reet runoff. <br /> <br />Time to Peak--Time interval be- <br />tween the beginning of RAINFALL <br />and the peak of the runoff. <br /> <br />Lag Time--Time interval between <br />the centroid of rainfall excess <br />and centroid of direct runoff <br />hydrograph. <br /> <br />Lag Time--Time interval between <br />the beginning of rainfall excess <br />and the centroid of direct <br />runoff hydrograph. <br /> <br />Lag Time--Time interval between <br />the centroid of rainfall excess <br />and the time when 50% of the <br />direct runoff has passed the <br />gaging station. <br /> <br />Time to Peak--T;me interval <br />between the centroid of rainfall <br />excess and the peak of the unit <br />hydrograph. <br /> <br />Time to Peak--Time interval <br />between beginning of rainfall <br />excess and the peak <br />of the unit hydrograph. <br /> <br />Rise Time--Time interval required <br />for the hydrograph to rise from <br />low flow to the maximum stage <br />(might be equivalent to Lopez T2). <br /> <br />Time of Concentration--Time <br />interval required for a unit <br />volume of water to travel from <br />the most remote point on water- <br />shed boundary to the outlet. Also-- <br />Time interval between end of rain- <br />fall excess and point of inflection <br />on recession of the hydrograph. <br /> <br />Equilibrium Time--Time interval <br />required for the runoff rate to <br />become equal to the supply rate. <br /> <br />16 <br /> <br />Reference <br /> <br /> <br />Snyder (1 93S), <br />Taylor and <br />Schwarz (1952), <br />Eagleson (1962) <br /> <br />Linsley, Kohler and <br />Paulhus (195S) <br /> <br />Lopez (1973) <br /> <br />Horner and <br />Flynt (1936), <br />Mitchell (194S) <br /> <br />Wilson (1972) <br /> <br />USBR (1965), <br />Wilson (1972) <br /> <br />Lopez (1973) <br /> <br />Lopez (1973) <br /> <br />Ramser (1 927) <br />Kirpich (1940) <br />Gray (1961) <br />Wu (1969) <br /> <br />Kirpich (1940) <br />USCE (1966) <br /> <br />Izzard (1946), <br />Wei and Larson (1971) <br />