FLOOD02246

• County: Boulder
• Community: Boulder
• Stream Name: Bullhead Gulch
• Basin: South Platte
• Title: Bullhead Gulch Hydrology Report
• Date: 8/22/1997
• Prepared For: FEMA
• Prepared By: Taggart Engineering Associates, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

I August 25, 1997 BHI00FI3.CHO
I (HIN) (HIN) (CFSI~I) (CFSI ""
J5.lJ 113.00 276.89 26.86 5.17
I .... NOTE HE TIME ro PEN: IS CALCll.ATED BASED eN Tl( TIME ~ CCKEHTAATHJ. PROVIDED BY TIt: USER.
REPlACIt<<; THE IltE C()tPUTED 8Y ClWO np- 16.53)
WIDTH AT SO .. 108. HIN. WlOrn AT 15" 56. HIN. K50-.19 (75-.26
I RAINFAlL LOSSES INPUT WI BASIN OATA
H,U, PERVIllJS REr. .. .40 IN MAX.ltflERVIClJSRET. .10 IN.
INFllTRATIC*" 3,00 IN./t-1l:. DECAY- .OO180/S[CCJ(l FHINfL. .5DIN.lIfl..
I
71HE LNIT 71HE LNIT TlHE LNIT
HYIlROORAPH HYIlROORAPH "'1lROC.IW'H
I o. o. 120. l4. 240. 10. .
5. ,. 125. 13. 2<45. 10.
10. 8. 130. 13. ISO. 10. .
IS. 15. 135. 13. 155. 9. .
I 10. 10. 140. 13. 160. ..
IS. ". 145. 13. 166. 9.
30. 16. ISO. 11. 270. 9.
35. 17. 155. 11. l7S. 9.
40. 16. 160. 11. 180. 9. .
I 45. 15. 166. 11. 185. 9.
50. 13. 170. 11 190. 9. .
55. 11. 175. 11. 195. 9.
60. 10. 180. 11. 300. 8.
66 19. 185. II. 305. 8.
70. 18. 190. 11. 310. 8.
I 75. 19. 195. 11. 315. 8.
80. 10. 200. 11. 320. 8.
85. 19. 105. 11. 315. 8.
90. 18. 210. 11. 330. 8.
95. 17. 215. 11. 335. 8.
100. 17. . 220. 10. . 340. 8.
I 105. 16. 225. 10. "'. 7.
lID. IS. 130. 10. 350. 7. .
115. IS. 135. 10. 355. o.
BASIN 10: 70 .. BASIN Wf"lENT: Sl.B8ASIN I~ 70
I ...... STCftI t(). .. -.. I)ATE ~ RETlIlH PERlOO .. lOOY[AR
JNCREHOIT TOTAl 51... INCREMENT TOTAl 51... .
71HE RAINFAll EXCESS "'1lROC.IW'H 71HE AAINfALl EXCESS HYIlROORAPH .
I (MIN.) (IN) PRECIP (CFS> (HIN.) (IN) PRECIP (CFS)
o. .00 .000 o. 200. .00 000 10. .
5 .03 000 o. 105. 00 .000 10.
I 10. OS .000 o. 210. .00 .000 10. .
15. .11 002 o. 215. .00 .000 19.
10. .11 004 o. 220. .00 .000 19.
IS. .38 095 o. 225. .00 000 19.
30. " 613 3. 230, .00 .000 19.
35. 38 331 8. 135 .00 .000 18
I 40. 11 .171 l4. 240. 00 000 18.
45 17 .124 11 245. .00 000 18.
50 .l4 .093 18. 250. 00 000 18.
55. .11 .066 33. 155. .00 000 17.
60. 11 067 37. 260. 00 000 17.
I " 11 .067 39. 166. 00 .000 17
70. .05 013 40. 270. .00 .000 17.
75. .05 .()lJ 39. 275. .00 .()OO 16.
80 03 .001 38. 280. .00 .000 16.
85 .03 .001 36. 185. .00 .000 16.
90. 03 .O()l 35. 190. .00 .000 16.
I 95. .03 .001 34. 195. .00 000 16.
100 .03 .001 33. 300. .00 .000 IS.
105. 03 .00t 33. 305. .00 .000 15.
110. 03 001 31. 3tO. .00 .000 15.
115. .03 .001 31 315. .00 .000 15.
120. 03 .001 31. 320. .00 .000 15.
I 125. 00 000 19. 325. .00 .000 14. .
130 .00 000 18. 330 .00 000 14. .
135. 00 000 17 335 00 000 14.
140 00 000 16 340. 00 000 14.
145. .00 000 IS. 345 00 000 14.
I 150. 00 .000 14. 350. .00 .000 l4.
155 00 .000 13. 355. .00 000 13.
160. .00 .000 13 '60. .00 000 13. .
166. .00 000 11. '66. .00 .000 13. .
170. .00 .000 11. 370. .00 000 13.
I 60