My WebLink
|
Help
|
About
|
Sign Out
Home
Search
DWR_2731616
DWR
>
Dam Safety
>
2015
>
04
>
DWR_2731616
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
9/6/2016 10:59:26 AM
Creation date
4/6/2015 11:13:02 AM
Metadata
Fields
Template:
Dam Safety
Document Date
12/1/2014
Document Type - Dam Safety
Report
Division
1
Dam ID
040229
040230
040904
040905
040906
Subject
SEPT. 2013 LITTLE THOMPSON RIVER FLOODING & BIG ELK MEADOWS DAM FAILURES
DWR Send/Recipient
DAM SAFETY BRANCH-COLORADO DIVISION OF WATER RESOURCES
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
228
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).
View images
View plain text
develop elevation- capacity data for proposed reconstruction of the dams (GEI, 2014). However, <br />this topographic data may not represent pre -flood conditions as flooding and failure of the dams <br />likely modified the topography through erosion and sedimentation processes. Review of the Dam <br />Safety Branch files produced surveys of the reservoirs that were conducted in 1997 to support <br />supplemental water rights applications. These surveys were used to establish pre -flood elevation - <br />storage curves for each reservoir. Presentation of the digitized surveys and resulting elevation- <br />storage curves are presented in Appendix A. <br />Physical parameters and dimensions of the dams were obtained from the best available data; a <br />combination of file reports, as- constructed drawings, field surveys, and GIS mapping. Following <br />are brief descriptions of each dam. <br />7.1 Sunset Lake <br />Sunset Dam was classified as a non - jurisdictional dam. The dam had an earthen embankment with <br />height of approximately 6 -ft and was decreed to stored 8.6 acre -ft of water. Being non - <br />jurisdictional it did not receive routine safety inspections. <br />7.2 Rainbow Lake <br />Rainbow Dam was classified as a non - jurisdictional dam. The dam had an earthen embankment <br />with a height of approximately 10 -feet and was decreed to store 37.3 acre -ft of water. It did not <br />received routine safety inspections by the Dam Safety Branch. <br />7.3 Willow Lake <br />Willow Dam was classified as a non - jurisdictional dam. The dam was an earthen embankment <br />with a height of approximately 10 -ft and was decreed to store 26.67 acre -ft of water. It did not <br />receive routine safety inspections by the Dam Safety Branch. <br />7.4 Mirror Lake <br />Mirror Dam was classified as a non - jurisdictional dam. The dam had an earthen embankment with <br />a height of 10 -feet and was decreed to store 18.16 acre -ft of water. The reservoir impounded by <br />Mirror Dam contained the intake structure for the BEMA community water system. <br />7.5 Meadow Lake <br />Meadow Dam was classified as a minor size, jurisdictional dam assigned DAMID 040229. The dam <br />was an earthen embankment with a jurisdictional height of 10.1 feet and was decreed to store <br />32.3 acre -ft of water. The dam received regular safety inspections with the last inspection on file <br />from 2008. Significant rehabilitation with replacement of the outlet works occurred in 2012 under <br />State Engineer approved Construction File No. C -2003. Final inspection and acceptance of the <br />construction was granted by the State Engineer in May, 2013. <br />A summary of the dam parameters used for modeling Big Elk Meadows dams and reservoirs is <br />provided in Table 2. <br />Report of the September 2013 Little Thompson River Flooding COLORADO <br />and Big Elk Meadows Dam Failures, June 2014 (Revised, Dec 2014) A&V Division of Water Resources <br />Page 9 of 48 <br />DAM SAFETY BRANCH <br />
The URL can be used to link to this page
Your browser does not support the video tag.