My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
PUB00075
CWCB
>
Publications
>
Backfile
>
PUB00075
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2011 11:12:51 AM
Creation date
9/30/2006 10:14:23 PM
Metadata
Fields
Template:
Publications
Year
2004
Title
State Engineers 19th Annual Report to the Colorado General Assembly on Dam Safety for FY 02-03
CWCB Section
Administration
Author
DWR
Description
State Engineers 19th Annual Report to the Colorado General Assembly on Dam Safety for FY 02-03
Publications - Doc Type
Tech Report
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
43
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 />. Haunted Spring Dam, a Class 3 structure, experienced excessive seepage at the toe, <br /> <br />. Ivanhoe Dam, a Class 3 structure, experienced piping of embankment materials at <br />downstream toe. The reservoir was drawn down and an upstream geomembrane liner <br />was installed on the upstream slope of the dam, <br /> <br />. Grimes-Brooks Dam, a Class I structure, experienced increased abutment seepage. The <br />reservoir was drawn down to a safe level and monitored on a daily basis. <br /> <br />. Sellers & McClane Dam, a Class 3 structure, experienced excessive seepage through the <br />dam due to extensive muskrat burrows in the dam. <br /> <br />. Western Hillside Dam, a Class 1 structure, experienced snow slide damage to the <br />spillway structure. The reservoir was lowered to a safe level, the spillway repaired, and a <br />ramp constructed to divert future snow slides away from the spillway area. <br /> <br />. Rist-Benson Dam, a Class 3 structure, experienced excessive seepage at downstream toe <br />due to plugging of toe drains, The toe drains were cleaned and repaired. <br /> <br />. Sylvan Park Dam, a non-jurisdictional dam, experienced excessive seepage along outlet <br />works conduit. The reservoir was drawn down and a new outlet conduit was installed, <br /> <br />. Turner Dam, a non-jurisdictional dam, experienced near overtopping failure of the dam <br />due to rapid snowmelt runoff and blocked spillway conduit. The blockage at the spillway <br />conduit was removed by the Water Commissioner and Dam Safety Engineer that <br />prevented the dam from overtopping, The actions prevented the dam from overtopping <br />and possible failure of the dam. <br /> <br />At the conclusion of the reporting period, there were 193 dams restricted from full storage due to <br />various structural deficiencies such as significant leakage, cracking and sliding of embankments, <br />and inadequate spillways. Total storage restricted was 144,437 acre-feet. The restrictions <br />provide risk reduction for the public and environment until the problems are corrected, The <br />owners are responsible for following the restricted operating levels and the restrictions are <br />enforced by the Division Engineers. A list of currently restricted reservoirs is included in <br />Appendix B. Although many dams were repaired and removed from the restricted list within <br />the last year, a number of dams were also added to the list during the same time period. The <br />change in the restriction from the same time last year resulted in the same number of dams on the <br />restricted list, however the volume of the restrictions increased approximately 15,000 acre-feet. <br />The increase in the volume of storage restriction can be related, at least in part, due to the <br />increased aging of the dam infrastructure within the state. <br /> <br />In the event that conditions of any dam or reservoir are so unsafe as to not permit the time to <br />issue or enforce a restriction, or a dam is threatened by a large flood, the State Engineer may <br />immediately employ remedial measures to protect the public safety. An emergency dam repair <br />cash fund is provided under the CWCB construction fund per Section 37-87-122.5 (Supp, 2002). <br /> <br />8 <br />
The URL can be used to link to this page
Your browser does not support the video tag.