(AP) – Timeline of key Colorado River water use events.
_ Summer 1869: John Wesley Powell’s expedition navigates the Colorado River and Grand Canyon by boat.
_ 1889: International Boundary and Water Commission created between U.S., Mexico. (Spanish: Comisión Internacional de Límites y Aguas).
_ Nov. 24, 1922: Signing of the Colorado River Compact. “The Law of the River” outlines the rights of northern and southern basins to each use 7.5 million acre feet of water a year. An acre-foot is about enough to serve two homes annually.
_ 1928: Boulder Canyon Project Act: Ratifies 1922 compact, authorizes construction of Hoover Dam and lower basin irrigation facilities. California apportioned 4.4 million acre-feet of water a year; Arizona, 2.8 million acre-feet; Nevada 300,000 acre-feet.
_ Sept. 30, 1935: Boulder Dam dedication. Later renamed Hoover Dam
_ Feb. 3, 1944: Treaty for the Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande: U.S. commits 1.5 million acre-feet of Colorado River water annually to Mexico.
_ 1948: Upper Colorado River Basin Compact: Apportions 7.5 million acre-feet of upper basin water a year. Colorado gets 51.75 percent; Utah, 23 percent; Wyoming, 14 percent; New Mexico, 11.25 percent. Arizona also gets 50,000 acre-feet of upper basin water annually.
_ 1956: Colorado River Storage Project Act: Authorizes construction of Glen Canyon, Flaming Gorge, Navajo and Curecanti dams.
_ 1973: Minute 242 of the U.S.-Mexico International Boundary and Water Commission: Requires U.S. to reduce salinity of water delivered to Mexico at Morelos Dam in Baja California near Yuma, Ariz.
_ 1974: Colorado River Basin Salinity Control Act: Authorizes desalting and salinity control projects including the Yuma Desalting Plant.
_ 2010: Magnitude-7.2 Easter Sunday earthquake damages Mexico irrigation systems, prompts temporary Lake Mead water storage agreement.
_ Nov. 20, 2012: Minute 319 of the U.S.-Mexico International Boundary and Water Commission signing in Coronado, Calif.
Source: U.S. Bureau of Reclamation, AP research.
(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)
- 7 common ways to get sued by your employees
- Why it might be time to upgrade your toilet
- Arizona teachers are building a better future by using technology in the classroom
- How to make summer reading fun for the whole family
- How to find relief for chronic joint pain
- Can the NBA Lottery save the Suns?
- Skip Urgent Care: 5 ailments you can treat with telemedicine
- Skin Cancer in Arizona: Stats, facts and new immunotherapy drugs making strides
- Distracted walking injuries end up not so funny
- Scary situations: 5 quick tips before you let a contractor in your home
- Four ways telemedicine is changing the health care industry
- 5 mistakes homeowners make in the spring
- Three rivers run through it: Exploring Arizona's waterways
- Smart home basics: things you need to know to get started
- 5 Surprising things causing back pain
- Arizona agriculture is a $17.1B industry
- Timeline: Arizona's roots in brewing history
- 5 reasons to love the D-backs this season
- Tips for taking your home entertainment experience to the backyard
- Tech-related injuries your parents never experienced
- Workers comp: Signs your co-worker could be a fraud
- Who's the real founder of America's pastime?
- Epidemic rising? What you need to know about Alzheimer's in Arizona
- 5 unforgettable Wooden Award winners
- Family and hard work are keys to success of modern dairy farmers
- Genetic testing could hold answers for colon cancer survival
- Cold beers and baseball: A beer lover's guide to Spring Training
- Telecommuting: 5 tips to make it work for employers and employees
- See how top CFOs feel about economic growth in the Valley
- Migraine myths that keep patients from effective treatments