FLOOD00824

• County: Summit
• Community: Frisco
• Stream Name: Blue River Basin
• Title: Hydrology for Flood Insurance Study
• Date: 3/10/1992
• Prepared For: Frisco
• Prepared By: Muller Engineering Company, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE 1 HYDROLOGY SUMMARY TABLE
FIS STUDIES - TOWN OF FRISCO AND SUMMIT COUNTY, 1991

CFinal H drolo<lV Subnittal 3/10/92\
OTREAM KAME " UOA IO-ya 50-Ya I:' IOO-YR 50D-fR
FRISCO OK .:- - CFS':'" ds - - eFS -" eps
MEADOW CREEK 5.8 125 175 280 340
(At Dillon)
TEN MILE CREEK (U/S No. FOrk} 79.0 1340 1590 1710 1910
(Just Dls of No. Fork) 93.3 1450 1780 1900 2130
Dls at Dillon Rea.\ 94.2 1500 1820 1980 2190
MINERS CREEK (Be low 000- 6.8 140 185 250 350
fluence wI Jug Creek)
MINERS CREEK (Above con- 4.9 120 170 230 330
fluence wI Jug Creek)
O.~~ .' , I, , ,,',
SUMMIT COUNTY ,
BLUE RIVER 129.0 1010 1330 1540 1900
(Above Dillon)
SWAN RIVER 38.5 550 660 700 770
S. BARTON GULCH 3.5 100 215 320 475
FRENCH GULCH 11.1 280 490 710 880
BLUE RIVER 43.5 450 850 900 1200
(Above Breckenridge)
BLUE RIVER 17.3 280 380 450 560
(Above Blue River)
SNAKE RIVER (U/5 of No. FOrk) 42.1 730 900 980 1200
(JU8t Dls of No. Pork) 57.7 925 1180 1270 1460
iD/5 Study Limitl 61.0 975 1230 1320 IS20
N. FORK SNAD: RIVER 15.6 270 430 510 720

REFERENCES z

1. Floodplain Information for Breckenridge, CO, 1'75
by Leonard Rice Consulting Water Engineers, Inc.
2. Hydrology Report for Flood Insurance Study
for suaait County, Co., 1978 by Gingery Assoc., Inc.
3. M..ter Drainage Plan for Breckenridge (Hydrology Portion),1'86
by Lenzotti-Fullerton Consulting Engineers, Inc.
(. Flood Plain Study for Jug Creek, Miners Creek, and No MUle Creek
with Hydrology Report, 1986, by Robillard and Assoc., Inc.

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Revised January 1992

REFERENCE AND METHODOLOGY DESCRIPTION

2 , Table 3 (Figure 2 Curves were used) (&maIler areas{ less than 20 acres} include
effects due to rainfall for 50-,100-, Values used in previous FIS

2 Use Drainage Area VB. Discharge relation for Gage No. 501
2 Gage Data [Checked with Ref 3, Ref. 3 values approx. l' higher]
2 Use Drainage Area Vs. Discharge relation for Gage No. 501

Values used in previous PIS
Values used in previous FIS
Values used in previous FIS

4 [Values check wi Figure 2 of Ref. No.2)

Used Figure 1 of R~f_ ND. 2

(por 10-,50-,100- Use Specific Gage Analysis) Ref. 3, (For 500 Use Log-Prob. graph)
[The 500-yr. was checked by using regression eqtn. from Ref 2 (1980 cfsll

Used regression eqtns. from Ref.2 [Checks with Fig. 2 of Ref. 2 .
also checks wI regression eqtns. for Upper Blue of Ref. 3)

(For 10-,50-,100-) 3, Used Log-Prob. Curve to project for 500-yr value

(Par 10-,100-,500-) 1, (For 50-) 3 [Checked for the 50-yr.,Ref. 1 using Log-Prob Curve,
also checked ths 100-yr using BEC-1 from Ref. 3]

1 for 10-,100-,500_; interpolated for 50-yr.
[checked 10-,50-,IOO-yr against Ref. 3 (OKI, see Table 2.4 Ref.3]

Values used in FIS for Breck.

Used regression curves in Ret.3 for Upper Blue River Basin for lO-,SO-,IOO-yr.
then used Log-Prob Curve to get 500-yr value

2 (U.ed Drainage Area Vs. Discharge curve for Gage No. (15)
2 (Used Gage Data for No. 475) Valuell used in previous FIS
2 (Used Drainage Area Vs. Discharge curve for Gage No. (75)
2,3 U..d ~gre..ion eqtna. from both tor 10-yr, U.. 100-yr value from the
from the Master Drainage Report for lteyetone Ba.. I (cC*puted using BEC-l)
Used Log-prob. curve for 50-,500-yr valuee