DART River Environment Graphics & Text

Data Courtesy of U.S. Army Corps of Engineers, NWD and Grant County PUD and Chelan County PUD and Douglas County PUD

River Environment Queries

Select Output Format

Select Year, Site, River Data

Multiple selections allowed for each.
The year following the site indicates earliest data available.
To view 10 Year Averages, select from the listed "10 Year Average" parameters in the River Data menu (multiple allowed) and select 10 Year Average Range (one allowed).
Please see the notes below on River Data.

Set Date Range


Remove dates to automatically scale graph.

Select 10 Year Average Range

10 Year Average Range applied to selections for 10 Year River Data.

Customize Graph


Query Notes

  1. To generate the Data Link for querying results directly from scripts and automated processes: make all selections, check "Generate Query Result Link Only" next to the Submit button, and click Submit.

Notes on the DART River Environment Dataset

USACE Data Disclaimer: These data are furnished with the understanding that the Corps of Engineers makes no warranties concerning the accuracy, reliability, or suitability of the data for any particular purpose.

Inflow, Outflow, Spill, and Temperature (Scroll Case) data are collected at the project (dam). Spill Percent is calculated by DART from the Outflow and Spill values. Temperature (WQM), Barometric Pressure, Dissolved Gas and Dissolved Gas Percent are measured at Water Quality Monitoring stations in the forebay and tailrace of most projects and other key locations in the basin (prior to 1995, these data are from a variety of sources within the U.S. Army Corps of Engineers). Turbidity is measured in the forebay or in the fish ladders at a project. Elevation is measured in the forebay of a project.

Bonneville Dam, 18 July 2006: The USACE initially reported incorrect hourly Bonneville spillway discharge for 2002-2004. DART is reporting the USACE's Recalibrated Spillway Discharge at Bonneville for this period. The Water Quality reports for BON, CWMW, CCIW, and WRNO include the recalibrated spill at Bonneville.

Wells Dam, 13 August 2012: The DCPUD has requested the water temperature data reported as the "Wells Scrollcase Water Tempurature" obtained for DART from prepared USACE text files be removed as erroneous. The Wells project does not report scrollcase water temperatures. This data has been removed from the publicly accessible DART dataset.

June 5 - July 9, 2013: DART reported partial averages for outflow and spill from several Upper Columbia PUD projects. These values have been corrected to show the average of the complete day. We would like to thank the CCPUD for helping us correct this issue.

Please refer to the River Environment Metadata & Glossary for more information.