Salinity Loads at 20-stations in the Colorado River Basin (ver. 2.0, June 2026)

The U.S Geological Survey (USGS), in cooperation with the Bureau of Reclamation (Reclamation), prepares a biennial analysis of salt loading at 20 sites on the Colorado River and its tributaries in Colorado, Wyoming, New Mexico, Utah, and Arizona. These estimates can also be used by Reclamation to measure the effectiveness of the Colorado River Basin Salinity Control Program. Data are retrieved from the publicly available USGS National Water Information System database and provided by Reclamation in the form of .pdf files that are compiled into Excel spreadsheets and included herein. This data release is intended to be updated biennially as new data are collected and available as part of the salt loading analysis. Previous version(s) are available from the author.

First posted - April 10, 2025 (available from author)
Revised - June, 2026 (version 2.0)