FLOOD01407

• Designation Number: 301
• County: Arapahoe
• Community: Unincorporated Arapahoe County
• Stream Name: Piney Creek Tributaries
• Title: Flood Hazard Area Delineation - Piney Creek Tributaries
• Date: 4/1/1989
• Designation Date: 7/1/1989
• Floodplain - Doc Type: Floodplain Report/Masterplan

I Table 7 (continued)
flOODPLAIN AND FLOODWAY REFE~ENCE DATA: ANTELOPE CREEK
I Cross
Section Thalweg 10- Yea r 50- Yea r 100-Year Floodplain Data Floodway Da ta
Number Station Elev. Di scha rge Elev. Discharge Elev. Di scha rge Elev. Vel. Width Elev. Vel. Floodway Width (1)
I (cfs) (efs) (cfS) ( fps) (ft) ( fps) Left Right Total
I 10000 100+00 5904.1 380 5906.2 830 5907.3 1080 5907.7 7.6 96 5907.7 8.9 20 30 50
10450 104+50 5913.1 380 5914.4 830 5914.9 1080 5915.1 6.9 107 5915.4 6.0 18 89 107
I 10720 107+20 5916.0 380 5918.7 830 5919.4 1080 5919.6 5.3 138 5919.6 5.9 123 15 138
11150 111 +50 5922.3 380 5924.8 830 5925.4 1080 5925 .8 8.5 58 5926.0 7.8 40 18 58
11730 117+30 5930.2 380 5933.2 830 5934.3 1080 5934.7 6.9 69 5934.7 7.5 22 45 67
I 12160 121+60 5937.5 380 5940.0 830 5940.6 1080 5940.9 8.4 62 5941.1 7.8 44 18 62
12700 127+00 5951.5 270 5953.0 610 5953.2 800 5953.3 4.6 466 5953 .3 4.7 489 -23 466
I 12705 127+05 5954.0 270 5955.7 610 5956.2 800 5956.3 4.1 280 5956.4 4.1 310 -30 280
12710 127+10 5958.1 270 5959 .4 610 5959.8 800 5960.0 5.6 190 5960.0 5.7 230 -40 190
I 12725 127+25 5959.6(3) 270 5960.5 610 5960.9 800 5961.1 4.3 193 5961.1 4.3 250 -57 193
12760 127+60 5960.0 270 5960 .8 610 5961.3 800 5961.4 2.7 270 5961.4 2.7 213 57 270
I 13000 130+00 5960.0 270 5961.4 610 5961. 9 800 5962.1 5.3 100 5962.1 5.3 52 30 82
1368C 136+80 5966.9 270 5968.3 610 5969.1 800 5969.4 7.6 61 5969.4 7.6 33 28 61
13770 137+70 5970.2 270 5971.0 610 5971.5 800 5971.8 6.5 80 5971.8 6.5 50 30 80
I 14180 141+80 5976.7 270 5978.5 610 5979.3 800 5979.6 6.4 59 5979.6 6.3 29 30 59
14560 145+60 5986.4 270 5987 .8 610 5988 .5 800 5988.8 7.2 68 5988.8 7.3 31 37 68
I 14890 148+90 5995.1 270 5996.4 610 5997.1 800 5997.4 7.6 61 5997.4 7.6 27 34 61
15500 155+00 6003.2 270 6004.7 610 6005.4 800 6005.7 7.2 55 6005.7 7.3 8 47 55
I 15865 158+65 6007.7 270 6009.8 610 60lD .3 800 6010.6 6.3 91 6010.6 6.3 70 21 91
16540 165+40 6017 .5 270 6019.3 610 6020.0 800 6020.2 6.7 77 6020.2 6.8 49 28 77
I 17340 173+40 6029.3 200 6030.7 490 6031.6 650 6032.0 8.4 36 6032.0 8.4 18 18 36
17750 177 +50 6034.1 200 6035.8 490 6036.7 650 6037.1 6.7 43 6037.1 6.7 23 20 43
18200 182+00 6038.0 200 6040.1 490 6041.2 650 6041.6 8.9 28 6041.6 8.9 16 12 28
I 18390 183+90 6045.0 200 6047.3 490 6048.6 650 6049.2 9.5 25 6049.2 9.5 13 12 25
18410 184+ 10 6047.8 , 200 6051 .8 490 6052.7 650 6053.1 7.7 60 6053.1 7.7 35 25 60
I 18600 186+00 6056.0 200 6057.2 490 6057.7 650 6057 .9 6.0 123 6058.0 6.5 50 25 123
18910 189+10 6057.8 200 6060.8 490 6061.5 650 6061. 7 5.4 160 6061. 9 5.4 21 56 77
I
I (1) Looking downstream, as measured in feet from centerl ine of channel.
(2) 100-year floodplain confined to channel. No Floodway de fi ned.
I (3) Spillway elevation of existing pond embankment.
(4) Includes shallow flooding area.