My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
FLOOD02473
CWCB
>
Floodplain Documents
>
Backfile
>
2001-3000
>
FLOOD02473
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/29/2010 10:11:49 AM
Creation date
10/4/2006 10:55:04 PM
Metadata
Fields
Template:
Floodplain Documents
County
Weld
Logan
Basin
South Platte
Title
A Post Evaluation of Rainfall Reports Associated with Pawnee Creek Flood of July 29-30, 1997 in Eastern Weld and Western Logan Countie in Northeastern Colorado
Date
8/1/1998
Prepared For
Weld County/Logan County
Prepared By
CSU
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.
/
37
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
<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Summary and Conclusions <br /> <br />It was an extremely interesting experience to conduct a storm analysis a full year after the <br />event. Overall, I felt that I was successful in assembling very good information suitable - <br />for improving upon the original rainfall analysis for the storm, However, very few of the <br />observations were so confident as to earn an "A" rating. While it was possible to make <br />reasonably confident estimates of the storm rainfall pattern, uncertainty still exists <br />regarding exactly where, when and how much rain fell. There were still a few residents of <br />the area that could have been surveyed, but there was not enough time in this study for <br />further field work. Also, the farther away from the storm center, the poorer were the <br />memories of the storm. <br /> <br />The results of the rainfall analysis and review are contained in Table 1. This survey <br />strongly suggests that locally very heavy rains fell farther south and west of the storm <br />center than was indicated in the preliminary analysis. At the same time, this survey failed <br />to uncover information to better define rainfall patterns just east of the storm center in <br />western Logan county. Considerably uncertainty remains as to the limits of the heaviest <br />rains in excess of six to eight inches in Logan County. Observations and interviews from <br />residents of that area provided only marginal verification of actual rainfall patterns. <br /> <br />Table 1, List of locations and rainfall amounts for the storm of July 29-30, 1997. <br /> <br />Location <br /> <br />T R See <br />9 56 3 <br />9 57 14NW <br />9 57 16SE <br /> <br />10 56 20SW <br /> <br />10 56 29SE <br /> <br />10 56 28 <br />11 56 35 <br />9 56 8SE <br />9 56 27 <br /> <br />Storm Rainfall <br />(inches ) <br /> <br />original verified Confidence Reason for change <br /> <br />15.1 12-14 est. <br /> <br />13,5 13.75 <br /> <br />14 12 <br /> <br />B <br />B <br />B <br /> <br />12 9 est, <br /> <br />C <br /> <br />11 9.5 <br /> <br />B <br /> <br />6 6+ <br />6 6+ <br />15 <br />4 or 4.5 4.5 <br /> <br />C <br />C <br />D <br />B <br /> <br />23 <br /> <br />Possible gage splash <br /> <br />Cheeked his notes <br /> <br />Subtracted previous <br />day's rain <br /> <br />Subtracted previous <br />rain and corrected for <br />shape of bucket <br /> <br />Subtracted previous <br />day'srain <br /> <br />Gauge overflowed <br /> <br />Gauge overflowed <br /> <br />No observation found <br /> <br />Observer's memory <br /> <br />July 28 <br /> <br />}blinf::a11 <br /> <br />1.3 <br />DNA <br />1.5 <br /> <br />1.5 <br /> <br />1.5 <br /> <br />DNA <br />DNA <br />NA <br />NA <br />
The URL can be used to link to this page
Your browser does not support the video tag.