My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
7905
CWCB
>
UCREFRP
>
Public
>
7905
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:02:31 PM
Creation date
5/20/2009 2:53:47 PM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
7905
Author
U.S. Department of the Interior.
Title
Quality of Water, Colorado River Basin.
USFW Year
1995.
USFW - Doc Type
Progress Report No. 17,
Copyright Material
NO
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.
/
205
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 />1966-90 Changes-These are depletions that have come into being since the <br />Comprehensive Framework Study estimates were prepared. These include <br />5,000 acre-feet of private rights developed for municipal and industrial purposes. <br />Values shown were provided by the New Mexico Interstate Stream Commission. <br /> <br />Navajo Reservoir Evaporation-Reservoir evaporation is based upon a Colorado <br />River Storage Project study made in 1973. <br /> <br />Animas-La Plata Project (Colorado-New Mexico)-See the discussion of the <br />Animas-La Plata Project in the "Colorado" section. <br /> <br />San Juan-Chama Project-The San Juan-Chama Project was authorized by Public <br />Law 87-483. Transbasin diversions began in 1971. The May 1957 Supplemental <br />Project Report indicates that diversions are expected to average about 110,000 acre- <br />feet a year, although more recent hydrologic studies performed by the Southwest <br />Regional Office indicate that the long-term average annual yield may be closer to <br />104,000 acre-feet. For purposes of this report, 110,000 acre-feet have been selected as <br />the level of existing and future average depletions. <br /> <br />Navajo Indian Irrigation Project-Various estimates for projected agricultural use <br />depletions have been prepared, including the studies for the all-sprinkler irrigation <br />system for the Navajo Indian Irrigation Project (NIIP) prepared by the Southwest <br />Region of the Bureau of Reclamation. This study estimated agricultural consumptive <br />use of 226,000 acre-feet. Several other estimates have been made, and a 5-year field <br />study was made to determine actual consumptive use on the project. Technical <br />estimates reported by the Secretary of the Department of the Interior report, Economic <br />Study, May 1980, are 254,000 acre-feet for agricultural depletions. <br /> <br />'The State of New Mexico has stated that the projected depletion estimates for the <br />NIIP under full project development will not reach 267,000 acre-feet and that a <br />more reasonable estimate of the maximum project consumptive use would be <br />254,000 acre-feet annually. The 267,000-acre-foot depletion value is based on the <br />full 110,630 acres being irrigated each year. Based on historical data, at least <br />5 percent of the total irrigable acreage has been fallow in anyone year since 1981. <br /> <br />In November 1981, it was concluded and agreed by the Assistant Secretary, <br />Department of the Interior, Land and Water Resources and Assistant Secretary, <br />Department of the Interior, Bureau of Indian Affairs that the productive acreage of the <br />project should be 110,630 acres, rather than the 105,000 acres which had been <br />assumed in the past. Correspondingly, the annual depletion estimate has been revised <br />from 254,000 acre-feet to 267,000 acre-feet. <br /> <br />The first block of land (about 9,300 acres) was irrigated in 1976. In 1985, blocks 1 <br />through 5 were in production, and some water had been delivered to block 6. <br />Although some return flow from the project has been observed, the depletion of river <br />flow is nearly equal to the water diverted from Navajo Reservoir. Return flow to the <br />river will increase as deep percolation from irrigation charges the aquifer. <br /> <br />27 <br />
The URL can be used to link to this page
Your browser does not support the video tag.