8117

• UCREFRP Catalog Number: 8117
• Author: Modde, T. and G. Smith.
• Title: Flow Recommendations for Endangered Fishes in the Yampa River.
• USFW Year: 1995.
• USFW - Doc Type: Denver, CO.
• Copyright Material: NO

TABLE 1. Summary of IHA results for virgin and historic flows (cfs) from the Yampa River (based
on the time period between 1950 and 1982). Std. d. = standard deviation. .
Virgin Flows Historic Flows
MEAN Std. d. MEAN Std. d.
October 230 186 309 182
November 262 97 304 .97
December 232 77 254 76
January 240 60 250 60
February 300 111 303 112
March 573 258 542 255
April 2810 1293 2384 1-287
May 6634 1900 5742 1894
June 5959 2384 5448 2234
July 1427 1156 1429 1157
August 340 194 356 206
September 163 104 204 120
Annual Minimum 48 46 87 48
Annual Maximum 10326 3098 9460 2933
7 -day Low 58 . 55 101 53
7-day High 9446 2928 8601 2752
30-day Low 91 71 137 62
30-day High 7818 2267 7007 2242
90-day Low 157 59.7 197 55
90-day High 5373 1666 4764 1620

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