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<br />DRAINAGE CRITERIA MANUAL <br /> <br />RUNOFF <br /> <br /> 50 <br /> 30 <br />I- 20 <br />z <br />w <br />U <br />a: <br />w <br />a. 10 <br />Z <br />w <br />a. <br />0 5 <br />-J <br />(/) <br />W <br />(/) 3 <br />a: <br />:;) <br />0 <br />U 2 <br />a: <br />w <br />I- <br />et <br />:!: <br /> 1 <br /> <br />tl <br />Q <br />,J I , <br />~ . <br />I <br />"IJ i <br />$+j~ <br />.'- <br />'- I <br />-, <br />~ <br /> <br /> <br />g <br /> <br />123 5 <br />I N FEET PER SECOND <br /> <br />10 <br /> <br />20 <br /> <br />:? 1/ 'l;~ <br />S. ~ <br />~ I ~I <br />"[I ~ <br />~--f-~ <br />i I ill <br />~ - ~- t-' <br />!::~/ ~ J '- <br />~ g, <br />'-,I tf cf, <br />~~v ~~I I <br /> <br />I <br /> <br />.5 <br />,1 <br /> <br />I <br />.2 <br /> <br />I I <br />I 1/ <br />,3 .5 <br />VELOCITY <br /> <br />FIOURE :1-2. ESTIMATE OF AVERAGE FLOW VIELOCITY FOR <br />USE WITH THE RATIONAL FORMULA. <br /> <br />. MOST FREQUENTLY OCCURRING "UNDEVELOPi:D" <br />LAND SURFACES IN THE DENVER REGION, <br /> <br />REFERENCE: "Urban Hyc:rology =or Small Watersheds" Technical <br />Release No, 55, LSOA. SCS; Jan. 1975. <br /> <br />5 -1-84 <br />URBAN DRAINAGE & FLOOD CONTfIOL DISTRICT <br />