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WSP04503
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Last modified
1/26/2010 12:55:45 PM
Creation date
10/12/2006 12:23:59 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8142.600.20
Description
Trinidad Project - Environmental Studies
State
CO
Basin
Arkansas
Water Division
2
Date
3/1/1974
Author
Corps of Engineers
Title
Draft Environmental Statement - Trinidad Lake Project - Purgatoire River - Colorado
Water Supply Pro - Doc Type
Report/Study
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<br />in November 1866, the summer of 1883, and July 1886. It is estimated <br /> <br />. <br /> <br />that the flood of 1866 exceeded 30,000 c.f.s. at Trinidad. The peak <br /> <br />discharge for both the 1883 and 1886 floods was about 25,000 c.f.s. <br /> <br />at Trinidad. In September 1904, a major flood hit Trinidad. This <br /> <br />was the first major flood for which reliable records are available; <br /> <br />and when compared to those of historical record, it was the largest <br /> <br />flood at Trinidad since 1859. The U.S. Geological Survey estimated <br /> <br />that a peak discharge of 45,400 c.f.s. occurred at Trinidad on <br /> <br />September 30, 1904. This flood affected 370 acres of urban, residential, <br /> <br />business, railroad and industrial properties, and 4,580 acres of rural <br /> <br />lands. Damages from this flood were estimated in excess of $1,000,000 <br /> <br />(1904 prices). Subsequent damaging f1oodflows that exceeded the 15,000 <br /> <br />c.f.s. channel capacity through Trinidad are shown on Table 2. <br /> <br />Tab Ie 2 <br /> <br />FLOODS ABOVE 15,000 CUBIC FEET PER SECOND <br />JANUARY 1921 THROUGH SEPTEMBER 1960 <br />TRINIDAD, COLpRADO <br /> <br /> Peak Discharltes <br />Flood Year Date of Peak Without Res. With Res. <br />1923 Oct 1 19,800 (1) below 5,000 <br />1925 Jul 22 23,500 (1) below 5,000 <br />1927 Jul 29 20,000 ( 1) be low 5,000 <br />1927 Aug 23 19,600 (1) below 5,000 <br />1942 Apr 23 27,000 8,000 <br />1950 Aug 2 23,900 ( 1) below 5,000 <br />1955 Mav 19 28,000 8,550 <br /> <br />(1) Below bank - cutting discharge <br /> <br />NOTE: Peak of 45,400 c.f.s. estimated for 30 September 1904 <br />would be reduced to 8,630 ~.f.s. <br />I <br /> <br />II-12 <br /> <br />. <br />
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