8044

• UCREFRP Catalog Number: 8044
• Author: Upper Colorado River Commission.
• Title: Thirtieth Annual Report of the Upper Colorado River Commission.
• USFW Year: 1978.
• USFW - Doc Type: Salt Lake City, Utah.
• Copyright Material: NO

A. ENGINEERING - HYDROLOGY

1. Colorado River Salinity Problem

The Upper Colorado River Commission has continued its interest
and involvement in the Colorado River Basin salinity problem. The
Commission staff has worked closely with representatives of the
Commission's member States in coordinating and correlating activities
with other States and Federal Agencies. The Commission's Director
has acted as Secretary for the Colorado River Basin Salinity Control
Forum which is composed of representatives from the seven Colorado
River Basin States. The "Forum" has developed water quality
standards and a plan of implementation as required by the Environ-
mental Protection Agency Regulation (40 CFR Part 120) Colorado
River System Salinity Control Policy and Standards Procedure.

Section 303 of the Clean Water Act requires that water quality
standards be reviewed from time to time and at least once during
each three-year period. The "Forum" in 1978 reviewed the existing
State-adopted and Environmental Protection Agency-approved
numeric salinity criteria and found no reason to recommend changes
for the three lower mains tern stations.

Those values are:

Salinity in
mg/l

Below Hoover Dam. . . . . . . . . . . . . . . . . . . . 723
Below Parker Dam. . . . .. ............. 747
Imperial Dam. . . . . . . . . . . . . . . . . . . . . . . . . 879

The "Forum" did recommend a revised plan of implementation
consisting of the following elements:

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