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<br />-~ <br /> <br />c .... <br />_.&: <br />1::..... <br />.- c: <br />c ._ <br />0:_ <br /> <br />~ <br />II> <br />- <br />U <br />-Q" Q' <br />p' P <br />Ql <br />01 <br />.... <br />C <br />s: <br />u <br />'" <br />o <br /> <br />Time <br /> <br />r <br />Qp---~'--- Rural Peak Discharge <br />Qp .-- Urban Peak Discharge <br /> <br />o <br />u <br />...... <br />w <br />~ <br /><;.;> <br /> <br />t' __nm. Rural Time to Peak Discharge <br />P t; --- Urban Time to Peak Discharge <br /> <br />Vol' m._ Rural Volume of Runoff <br />Volu n_n Urban Volume of Runoff <br /> <br />Rural Hydrograph <br />Urban Hydrograph <br /> <br />Note: Vol" > Vol' <br />GENERALLY <br /> <br />- ;--;- <br />I/"I -......:; <br />1/ 1 " <br />)' : '<VOl' <br />I I <br />/:: "- <br />/" I I ......... <br />../ I I ............... <br /> <br /> <br />..... <br />..... <br /> <br /> <br />Figure 1I-2. Urbanization Impa-cts on Basin Hydrologic P,esponse With Increased Detention <br />Storage. <br /> <br />t" t r <br />p p <br /> <br />Time {hrl <br />