My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
WSP00641
CWCB
>
Water Supply Protection
>
Backfile
>
1-1000
>
WSP00641
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
1/26/2010 12:27:03 PM
Creation date
10/11/2006 9:51:58 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8272.100.60
Description
Colorado River Basin Salinity Control Forum
Basin
Colorado Mainstem
Water Division
5
Date
3/1/1990
Author
CRBSCF
Title
1989 Annual Progress Report - Water Quality Standards for Salinity - Colorado River System - March 1990
Water Supply Pro - Doc Type
Annual Report
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
36
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 /> <br />. <br /> <br />. <br /> <br />of salinity in the lower mainstem, the high level of <br />~ reservoir storage, the volume weighted salinity of the water <br />eft in storage and the present level of water use in the Basin, <br />c.o it is clear that the criteria will not be exceeded during the <br />~ next twelve-month period. <br /> <br />The flow-weighted average annual salinity values <br />(Calendar year) at Hoover, parker and Imperial Dams decresed <br />significantly because of the 1983 through 1987 record high <br />runoff. During this period of high runoff, salinity <br />concentrations decreased. aowever, with lower than average <br />flows in 1988 and 1989 (estimated at percent of normal), <br />salinity concentrations are now showing some increases. <br /> <br />Implementation of Reclamation and Agriculture salinity <br />control activitIes is continuing on the Grand valley, Uinta <br />Basin, Paradox Valley, Lower Gunnison Basin, and Big Sandy <br />Unit. However, it will be a number of years before <br />significant effects are felt at the three lower mainstem <br />stations. <br /> <br />Although current salinity levels in the Colorado River <br />System are below the criteria level, studies by the Forum and <br />Reclamation show that salinity concentrations will again <br />increase. If planned salinity control measures are <br />implemented, the man caused increases in salinity can be held <br />within the prescribed numeric criteria through the year 2010, <br />based on average water supply conditions. While the levels <br />of salinity concentrations will increase slowly, efforts to <br />control salinity take many years to accomplish. Once <br />completed, a salinity control project will take a number of <br />years (4-5) for the full impact of the control measures to <br />show results at Imperial Dam. Planning and implementation of <br />the salinity control program also requires considerable time <br />because of the many uncertainties associated with the complex <br />and unique technologies required for salinity control. <br />Therefore, it is imperative that the salinity control program <br />as set forth in 1987 Review be carried out as scheduled. <br /> <br />-17- <br />
The URL can be used to link to this page
Your browser does not support the video tag.