FLOOD04244

• County: Ouray
• Stream Name: Uncompahgre River
• Basin: Gunnison
• Title: Hydrology Addendum to FIS Ouray County Unincorporated Areas
• Date: 7/3/1985
• Prepared For: Ouray County
• Prepared By: Montgomery Watson
• Floodplain - Doc Type: Floodplain Report/Masterplan

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4 17 1962 304. 13 1997 473. 29.24
1 31 1963 550. 14 :987 471. 31.61
5 1 1964 452. 15 1998 463. 33.99
4 23 1965 556. 16 1964 452. 36.37
3 9 1966 236. 17 1982 436. 3S.75
9 6 1967 269. 18 1981 428. 41.12
8 8 1968 309. 19 1988 423. 43.50
7 20 1969 355. 20 1985 402. 45.88
5 5 1970 491. 21 1958 399. 48.26
8 19 1971 298. 22 1960 391. 50.63
5 23 1980 170. 23 1995 368. 53.01
7 17 1981 428. 24 1969 355. 55.39
8 22 1982 436. 25 1992 340. 57.76
7 21 1983 998. 26 1968 309. 60.14
5 10 1984 680. 27 1926 306. 62.52
4 17 1985 402. 28 1962 304. 64.90
5 17 1986 272. 29 1961 298. 67.27
5 13 1987 471. 30 1971 298. 69.65
6 29 1988 423. 31 1986 272. 72.03
3 8 1989 134. 32 1967 269. 74.41
5 3 1990 182. 33 1959 241. 76.78
8 2 1991 238. 34 1991 238. 79.16
5 31 1992 340. 35 1966 236. 81. 54
4 26 1993 218. 36 1993 218. 83.91
6 22 1994 120. 37 1990 182. 86.29
7 10 1995 368. 38 1980 170. 88.67
4 9 1996 108. 39 1956 146. 91. 05
6 9 1997 473. 40 1989 134. 93.42
7 8 1998 463. 41 1994 120. 95.80
7 31 1999 3960. 42 1996 108. 98.18
C; ..... .............. .................... ..~
NOTE- PLOTTING POSITIONS BASED ON-HISTORIC ?ERIOD (HI 78
NUMBER OF HISTORIC EVENTS PLUS HIGH OUTLIERS (Z) 1
WEIGHTING FACTOR FOR SYSTEMATIC EVENT S (WI 1. 87 80
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-OUTLIER TESTS

....~

HIGH OUTLIER TEST
~

BASED ON 42 EVENTS, 10 PERCENT OUTLIER TEST VALUE K(N)

2.700

1 HIGH OUTLIER(S) IDENTIFIED A30VE TES~ VALUE OF
OR INPUT BASE OF

216S.
2165.

NOTE - COLLECTION OF HISTORICAL INFO~~TION AND COMPARISONS
WITH SIMILAR DATA SETS SHOULD BE EXPLORED IF NOT
INCORPORATED I~ THIS ANALYSIS.

STATISTICS AND FREQUENCY CURVE ADJUSTED FOR 1 HIGH OUTLIER(S)
fu~ 0 HISTORIC EVENT(S)

~
LOW OUTLIER TEST
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SA SED ON 78 EVENTS, lO PERCENT OUTLIER TEST VALUE K(N) = 2.931

o LOW OUTLIER(S) IDENTIFIED BELOW TEST VALUE OF 63.2
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-SKEW WEIGHTING -
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BASE~ ON 78 EVE~TS, MEAN-SQUARE ERROR OF STATION SKEW = .101
DEFAULT OR INPUT MEAN-SQUARE ERROR OF GE~RALIZED SKEW = .302
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F:::NAL RESULTS

-~REQUE~CY CL~VE. DA LAS CREEK ~EAR R:::JGWAY, CO.
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CO~?U~ED EX?EC~ 8 PERCE~, CC~F=DE~CE ~:~I,S