My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
FLOOD11630 (2)
CWCB
>
Floodplain Documents
>
DayForward
>
1100
>
FLOOD11630 (2)
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/26/2010 10:25:17 AM
Creation date
1/5/2009 12:18:27 PM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Basin
Arkansas
Title
Post Flood Assessment Report - Arkansas River
Date
9/15/1999
Floodplain - Doc Type
Flood Documentation Report
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
187
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
35,000 c.f.s. The flood resulted from rainfall reportedly as high as 1~ inches in 24 hours over an <br />area of less than 100 square miles in the Monument Cre~k watershed. <br />Flood of April 16, 1942: The month of April 1942 was one of the wettest in Col~rado's history. <br />The average precipitation of 4.53 inches was the second largest on rec:ord for the State at that <br />time. The amount was only execeeded by the 5.06 inches of precipitation during April 1900. <br />Heavy precipitation, much of it in the form of snow, occurred betwee:n the 16'~ and 20`~ of April <br />over the Purgatoire River watershed. Rainfall between the 22°a and 2S~' of April hastened the <br />melting of the heavy snow pack causing high flows on the Purgatoire River at Las Animas. <br />Rainfall over the Arkansas River watershed produced a peak flow of : 2,000 c.f.s. at Nepesta, <br />34,000 c.f.s. at La Junta, and 23,600 c.f.s. at Las Animas. Although there was major flooding at <br />Trinidad, where the peak flow on the Purgatoire reached 27,000 c.f.s., the principal damage in <br />the Arkansas River valley was to transportation and irrigation systems. <br />Flood of May 17, 1955: Between the 17`~ and 20`~ of May 1955, heavy precipitation occurred <br />over the lower mountains and plains of eastem Colorado and moved over northeastern New <br />Mexico and western Kansas. Precipitation over the mountains was principally in the form of <br />dense wet snow while heavy rains fell over the plains. IVgajor flooding occurred in the Arkansas <br />River watershed from Pueblo to John Martin Reservoir and along the entire reach of the <br />Purgatoire River from Trinidad down to the mouth. The flood on the Purgatoire River <br />approached the magnitude of the 1942 flood at Trinidad and was the ls~rgest of record on the <br />lower reaches with a peak flow of 70,000 c.f.s. at Las Animas. At Pueblo, the Arkansas River <br />peaked at 11,000 c.f.s. Downstream the flood peak increased to 50,000 c.f.s. at La Junta and <br />caused major flood damage to North La Junta. At Las Animas, the peak measured 44,000 c.f.s., <br />but a successful flood fight prevented serious flooding. The peak inflow into John Martin <br />Reservoir was 88,000 c.f.s. There was very little contribution from the upper tributaries. <br />Fountain Creek had a peak of 5,000 c.f.s. The St. Charles River had a peak of 20,000 c.f.s. at the <br />mouth. The peak flow on the Huerfano R.iver Undercliffe was 11,300 c.f.s. The peak flow on <br />the Apishapa River neaz Fowler was 17,000 c.f.s. and for Timpas Cree:k near Rocky Ford the <br />peak was 7,500 c.f.s. <br />Flood of June 14, 1965: The most recent and destructive general floocl since 1921 began on June <br />14, 1965. The storm system produced e~remely heavy rainfall over a 4-day period, centered <br />over the upper Fountain Creek and Chico Creek watersheds, producin~; floodflow~ on Fountain <br />Creek up to a record 47,000 c.f.s. from Colorado Springs to Pueblo, on Chico CreE;k, and on the <br />Arkansas River from Pueblo to John Martin Dam. A severe storm cel~~ northeast of Colorado <br />Springs produced a maximum peak discharge of 124,000 c.f.s. on Jiminy Camp Creek. This <br />approached the Probable Ma~cimum Flood (PMF) for this stream. Rainfall over the Black <br />Squirrel Creek watershed produced a peak flow of 141,000 c.f.s. These two relatively small <br />streams produced most of the floodwaters along the Arkansas River from Pueblo t~ Las Animas. <br />Jimmy Camp Creek was the primary contributor to the flaod on Fountain Creek, which resulted <br />in the 47,000 c.f.s. flood of record at Pueblo. The contribution from Black Squirrel Creek caused <br />Chico Creek to produce 50,900 c.f.s. at the mouth. The Avondale gage on the Arkansas River <br />just upstream of the town of Avondale and the confluence with Chico ~reek recorcied a measured <br />Chapter 2- History of Flooding and Flood Protection <br />Post Flood Assessment Report ~ 7 Draft Revised 09/09/99 <br />
The URL can be used to link to this page
Your browser does not support the video tag.