My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
SPDSS_Task5_KeyStructure_JacksonLake
CWCB
>
Decision Support Systems
>
DayForward
>
SPDSS_Task5_KeyStructure_JacksonLake
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
9/26/2011 8:52:20 AM
Creation date
7/9/2008 2:08:11 PM
Metadata
Fields
Template:
Decision Support Systems
Title
SPDSS Task 5 - Key Structure, Jackson Lake & Fort Morgan Canal System
Description
The Jackson Lake & Fort Morgan Canal System has been identified as a key structure for the South Platte Decision Support System (SPDSS) consumptive use and surface water modeling efforts. The purpose of this Task 5 memorandum is to document physical, legal, and operational aspects of those key structures identified. This memo was revised to incorporate additional storage information. Revised March 15, 2007
Decision Support - Doc Type
Task Memorandum
Date
3/15/2007
DSS Category
Surface Water
DSS
South Platte
Basin
South Platte
Contract/PO #
C153954
Grant Type
Non-Reimbursable
Bill Number
SB01-157, HB02-1152, SB03-110, HB04-1221, SB05-084, HB06-1313, SB07-122
Prepared By
Leonard Rice Engineering
Link Groups
Link
2:
SPDSS_Task5_KeyStructure_JacksonLake
Last modified:
9/26/2011 8:52:20 AM
Path:
\Decision Support Systems\DayForward
Comments:
2007 Revision
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
14
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
The original outlet works at the reservoir were modified in 1919 to extend the outlet canal and <br />provide an increased discharge capacity of 500 cfs. The outlet works currently in use consist of <br />three concrete outlets, each 3 feet wide by 4.5 feet tall at the arched top. Two control gates on <br />each outlet regulate the storage releases. <br />Capacity: <br />Total Storage: 34,937 acre-feet <br /> There is no storage restriction on the reservoir. <br />Active Storage: 34,937 acre-feet <br />Dead Storage: A permanent pond, approximately 2,500 acre-feet, is prevented <br /> from reaching the outlet due to a berm in the northern area of the <br /> reservoir. <br />Area/Capacity Data: Two different stage/capacity tables have historically been used (see <br /> Table 1). The Water Commissioner for Division 1 historically <br /> used a table with measurements up to full decreed amount (referred <br /> to herein as the Division of Water Resources (DWR) table). The <br /> date of this survey is unknown, although appears to reflect the <br /> capacity at original construction. The Company utilizes a table <br /> apparently developed in 1948 for operational decisions. The 1948 <br /> stage/capacity table accounts for estimated operational losses, <br /> including reservoir seepage and evaporative losses. Since the table <br /> already accounts for losses, the table does not accurately depict <br /> total storage (W. W. Wheeler and Associates, 2000). Therefore, <br /> end-of--month storage contents for the post-1989 period were <br /> developed by reconciling the two stage/capacity tables to facilitate <br /> modeling the entire effect of Jackson Lake operations on the river <br /> system. The historical records available in HydroBase and <br /> developed for this effort are included in Figure 2. <br />Enlargement History: Jackson Lake Reservoir has never been enlarged. <br />Reservoir Seepage Information: Jackson Lake Reservoir experiences an unknown amount of <br />seepage, although reservoir stage can reportedly drop two hundredths of a foot per day <br />due to evaporation and seepage. <br />Reservoir Storage Measurement: Storage levels in Jackson Lake Reservoir are made using a <br />staff gage. The Company operates the reservoir such that the diversions into storage are <br />measured to a gage height, not a volumetric amount. The Superintendent is responsible <br />for collecting and reporting end-of--month storage amount to the Water Commissioner for <br />Water District 1. <br />Jackson Lake Reservoir System Page 7 of 14 <br />
The URL can be used to link to this page
Your browser does not support the video tag.