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<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />DRAINAGE CRITERIA MANUAL <br /> <br />RUNOFF <br /> <br />50 <br /> <br />/ <br />I <br />/ <br />!II <br /><J <br />.;' <br />" <br />$ <br />.. <br />.. <br />, <br />~ <br /> <br />/ <br />'II <br />1/ / j )1/ <br />I IJ j <br />?zy V. ~1 <br />,,~~r'~l ;, <br />Iq ~ ~q- $ <br />Q: " fI <br />t;::J OJ ~'" 'It I <br />..... 'I <br />.;' ".,'" Q ~ <br />~. '-"f)-~ ~ <br />~ " 4 '" ~j <br />~ 1/,...'" ~ ..."'.. / <br />- ~r-r- CJ IIJ'T """/ <br />~ I J... ~ ! <br /> <br /> <br />t I; / ;f <br /> <br /> <br />J .,'" <br /> <br />/ <br /> <br />j <br />I j <br /> <br />[) <br /> <br />30 <br /> <br />I- 20 <br />z <br />w <br />(J <br />a: <br />llJ <br />Q. 10 <br />Z <br /> <br />"" <br />~ <br />..' <br />;,.'" <br />~ <br />S' <br />CJ <br /> <br />& <br />'" <br />~ <br />"" <br />.. <br /> <br />W <br />Q. <br />o <br />..J <br />tIl <br />llJ <br />CII <br />a: <br />::;) <br />o <br />(J <br />a: <br />llJ <br />I- <br /><( <br />~ <br /> <br />5 <br /> <br />.f II <br />::J <br />~ j <br />"V <br />... <br />~~ / <br /> <br />3 <br /> <br />~ <br />~J <br />':11 <br />J <br /> <br />2 <br /> <br />1 <br /> <br />, <br />, , <br />, , <br />I I <br />I I <br /> <br />, <br />Ir <br /> <br />, <br /> <br />.5 <br />.1 <br /> <br />I <br />.2 <br /> <br />j <br />I <br /> <br />j <br />I' <br /> <br />.3.5 1 2 3 5 <br />VELOCITY IN FEET PER SECOND <br /> <br />10 <br /> <br />20 <br /> <br />FIGURE 3-2. ESTIMATE OF AVERAGE FLOW VELOCITY FOR <br />USE WITH THE RATIONAL FORMULA. <br /> <br />. MOST FREQUENTLY OCCURRING "UNDEVELOPED" <br />LAND SURFACES IN THE DENVER REGION. <br /> <br />REFERENCE: "Urban Hydrology For Small Watersheds" Technical <br />Release No. 55, USDA. SCS Jan. 1975. <br /> <br />5 -1-84 <br />URBAN DRAINAGE & FLOOD CONTROL DISTRICT <br />