FLOOD08009

• County: Adams
• Community: Broomfield, Westminster
• Stream Name: Quail Creek, McKay Lake Basin
• Basin: South Platte
• Title: Flood Hazard Area Delineation
• Date: 7/1/1986
• Prepared For: Broomfield, Westminster
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE 4 I
McKAY LAKE BASIN - SUBCATCHMENT PARAMETERS
SUBAREA GUTTER WIDTH AREA PERCENT SLOPE RESISTANCE FACTOR SURFACE STORAGE (IN) INFILTRATION RATE (IN/HR) I
NUMBER OR MANHOLE (FT) (AC) IMPERV (FT/FT) IMPERV PERV IMPERV PERV MAXIMUM MINIMUM DECAY RATE
98 19 1843. 43.2 80.0 .0200 .025 .025 .100 .400 3.00 .50 .00180 I
99 19 l270. 24.8 80.0 .0190 .025 .025 .100 .400 3.00 .50 .00180
100 1 2000. 41.3 80.0 .0130 .025 .250 .100 .400 3.00 .50 .00180
101 1 1280. 22.0 80.0 .0100 .025 .250 .100 .400 3.00 .50 .00180
102 2 l760. 40.4 80.0 .0200 .025 .250 .100 .400 3.00 .50 .00180 I
103 3 1890. 47.8 80.0 .0170 .025 .250 .100 .400 3.00 .50 .00180
104 3 2216. 33.1 80.0 .0130 .025 .250 .100 .400 3.00 .50 .00180
105 8 4800. 27.6 80.0 .0130 .025 .250 .100 .400 3.00 .50 .00180 I
106 8 4042. 44.1 80.0 .0130 .025 .250 .100 .400 3.00 .50 .00180
107 4 3067. 42.2 45.0 .0130 .025 .250 .100 .400 3.00 .50 .00180
108 4 3555. 73.5 44.0 .0130 .025 .250 .100 .400 3.00 .50 .00180 I
109 9 2783. 73.5 44.0 .0140 .025 .250 .100 .400 3.00 .50 .00180
110 9 2000. 78.1 48.0 .0500 .025 .250 .100 .400 3.00 .50 .00180
111 10 1550. 26.6 40.0 .0180 .025 .250 .100 .400 3.00 .50 .00180
112 10 2426. 43.2 40.0 .0160 .025 .250 .100 .400 3.00 .50 .00180 I
113 13 2643. 34.9 40.0 .0160 .025 .250 .100 .400 3.00 .50 .00180
114 13 2640. 30.3 40.0 .0150 .025 .250 .100 .400 3.00 .50 .00180
115 5 1600. 16.5 40.0 .0220 .025 .250 .100 .400 3.00 .50 .00180 I
116 12 2507. 43.2 40.0 .0290 .025 .250 .100 .400 3.00 .50 .00180
117 12 2750. 50.5 40.0 .0220 .025 .250 .100 .400 3.00 .50 .00180
118 11 1735. 23.9 40.0 .0500 .025 .250 .100 .400 3.00 .50 .00180
119 11 1600. 23.9 40.0 .0500 .025 .250 .100 .400 3.00 .50 .00180 I
120 14 1600. 40.4 40.0 .0190 .025 .250 .100 .400 3.00 .50 .00180
121 6 3520. 60.6 40.0 .0200 .025 .250 .100 .400 3.00 .50 .00180
122 6 4800. 49.6 40.0 .0300 .025 .250 .100 .400 3.00 .50 .00l80 I
123 16 1520. 17.5 40.0 .0300 .025 .250 .100 .400 3.00 .50 .00180
124 16 1976. 19.3 40.0 .0290 .025 .250 .100 .400 3.00 .50 .00180
125 7 3228. 103.8 40.0 .0430 .025 .250 .100 .400 3.00 .50 .00180 I
126 7 5511. 56.9 40.0 .0670 .025 .250 .100 .400 3.00 .50 .00180
127 15 3030. 48.7 40.0 .0230 .025 .250 .lOO .400 3.00 .50 .00180
128 15 3382. 85.4 40.0 .0200 .025 .250 .100 .400 3.00 .50 .00180
129 14 1067. 7.4 40.0 .0330 .025 .250 .100 .400 3.00 .50 .00180 I
201 20 835. 11.0 80.0 .0110 .025 .250 .100 .400 3.00 .50 .00180
202 20 1455. 18.4 80.0 .0080 .025 .250 .100 .400 3.00 .50 .00180
203 21 2360. 54.2 80.0 .0050 .025 .250 .100 .400 3.00 .50 .00180 I
204 21 1785. 26.6 80.0 .0080 .025 .250 .100 .400 3.00 .50 .00180
205 23 2400. 27.6 80.0 .0100 .025 .250 .100 .400 3.00 .50 .00180
206 23 3200. 55.1 80.0 .0100 .025 .250 .100 .400 3.00 .50 .00180 I
207 24 2320. 53.3 52.0 .0180 .025 .250 .100 .400 3.00 .50 .00180
208 24 2954. 44.1 52.0 .0180 .025 .250 .100 .400 3.00 .50 .00180
209 22 3657. 58.8 45.0 .0180 .025 .250 .100 .400 3.00 .50 .00180
210 22 4133. 85.4 44.0 .0180 .025 .250 .100 .400 3.00 .50 .00180 I
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