Mexico had been complaining about the increasing salinity of
Colorado River waters reaching its border. As a result, after
years of negotiations and interim agreements, the nations signed
Minute 242 of the International Boundary and Water Commission.
This action committed the United States to delivering water to Mexico
from the Colorado River containing no more than 115 parts per
million of salt than the salt content of the water diverted to
the All-American Canal at Imperial Dam (Imperial Valley).
With
this obligation, the Colorado River Basin Salinity Control Act was passed to initially fund four
salinity control projects. The Act has subsequently been amended
to include a number of other projects.
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History of the Colorado River Basin Salinity Control Project
United States Code regarding the Colorado River Basin Salinity Control Act
