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<br /> FLOODING SOURCE FLOODWAY BASE FLOOD <br /> WATER SURFACE ELEVATION <br /> 1 SECTION MEAN I WITHOUT I WITH I <br /> CROSS SECTION DISTANCE WIDTH AREA VELOCITY REGULATORY FLOODWAY FLOODWAY INCREASE <br /> (FEET) ( SQUARE (FEET PER <br /> FEET) SECOND) (FEET NGVD) <br /> 2 <br /> Gregory Gulch <br /> A 200 8059.02 <br /> B 253 8062.38 <br /> C 293 8065.16 <br /> D 338 8068.86 <br /> E 400 8071.64 <br /> F 475 8076.65 <br /> G 563 8081.97 <br /> H 618 8086.19 <br /> I 673 8089.58 <br /> J 818 8099.62 <br /> K 926 8106.68 <br /> L 1004 8112.46 <br /> M 1047 8115.09 <br /> N 1197 8124.50 <br /> 0 1266 8129.90 <br /> p 1345 8135.11 <br /> Q 1442 8142.28 <br /> R 1516 8148.00 <br /> 1 2No Floodway Computed For This Stream <br /> Feet Above Mouth <br />..... FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA <br />:a- <br />m <br />r- CITY OF BLACK HAWK, CO <br />,., <br /> (GI LPIN CO.) GREGORY GULCH <br />w <br /> .. , <br />