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HYDROLOGIC ZONES IN THE STATE OF COLORADO <br />Identify the hydrologic zone for your project site: Zone 1, 2, 3 <br />Zone 1: South Platte, Republican, Arkansas, and Cimarron River Basins <br />Zone 2: San Juan, Upper Rio Grande, Upper Colorado, and Gunnison River Basins, and <br />Green River Basin below Confluence with the Yampa River <br />Zone 3: Yampa and Green River Basins above confluence of Green and Yampa Rivers <br />Zone 4: North Platte River Basins <br />IOi <br />100 tol <br />106 105 <br />104 <br />IOl -- 102 <br />_ <br />I <br />b <br />4 <br />d <br />_ - - <br />- 1� <br />I <br />II <br />, <br />3 <br />r <br />I <br />1 <br />1 <br />1 <br />0.2180 <br />0.7090 <br />0.0000 <br />1 <br />0.4390 <br />I <br />I <br />0.3420 <br />1 <br />i <br />� <br />0.4030 <br />2 <br />1 <br />0.9420 <br />I <br />! <br />0.4940 <br />0.7550 <br />0.0000 <br />i <br />i <br />0.6590 <br />0.5690 <br />0.4310 <br />3 <br />0.0190 <br />1 <br />0.0010 <br />0.3380 <br />0.6700 <br />0.0010 <br />0.2500 <br />0.7500 <br />0.4670 <br />0.5330 <br />COLORADO <br />0.0280 <br />0.8900 <br />0.0000 <br />0.6710 <br />0.7570 <br />u e le n » a <br />1 0.2500 <br />rinw 1a <br />0.4670 <br />0.5330 <br />�'1_ F C _ f- 1 0015 <br />N/II✓N .iM <br />r✓ J..rH�p �0u✓eiv.i In 1. s+d IMl.lr <br />109 <br />100 101 <br />106 IOS <br />10e <br />10] 102 <br />Design Parameters for Various Zones <br />Zone <br />1 - Hour <br />2 - hour <br />3 - Hour <br />1 30.00 <br />a <br />b <br />c <br />d <br />e <br />f <br />m <br />n <br />r <br />1 <br />0.2180 <br />0.7090 <br />0.0000 <br />1.8970 <br />0.4390 <br />- 0.0080 <br />0.3420 <br />0.6580 <br />0.5970 <br />0.4030 <br />2 <br />- 0.0110 <br />0.9420 <br />0.0000 <br />0.4940 <br />0.7550 <br />0.0000 <br />0.3410 <br />0.6590 <br />0.5690 <br />0.4310 <br />3 <br />0.0190 <br />0.7110 <br />0.0010 <br />0.3380 <br />0.6700 <br />0.0010 <br />0.2500 <br />0.7500 <br />0.4670 <br />0.5330 <br />4 <br />0.0280 <br />0.8900 <br />0.0000 <br />0.6710 <br />0.7570 <br />- 0.0030 <br />1 0.2500 <br />0.7500 <br />0.4670 <br />0.5330 <br />Duration in minutes <br />5.00 <br />10.00 <br />1 15.00 <br />1 30.00 <br />Ratio to one -hr Depth <br />0.29 <br />0.45 <br />0.57 <br />0.79 <br />UD- RainZone 0.01 a, ZONES 3/3/2010, 9:39 AM <br />