Catalog Item

Columbia River below Grand Coulee Dam near Coulee Dam, Washington (GCGW) Daily Instant Total Dissolved Gas (TDG) Time Series Data

Columbia River below Grand Coulee Dam near Coulee Dam, Washington (GCGW) instant daily total dissolved gas in millimeters of mercury (mmHg). Total dissolved gas refers to the total amount of dissolved gas in water.
Query Data
Catalog Record Title Columbia River below Grand Coulee Dam near Coulee Dam, Washington (GCGW) Water Operations Monitoring Data from Columbia-Pacific Northwest Water Operations Monitoring
Generation Effort Columbia-Pacific Northwest Water Operations Monitoring
Location Name Columbia River below Grand Coulee Dam near Coulee Dam, Washington (GCGW)
Type Time series
Modeled/Observed Observed
Start Date Fri Apr 27 1984 12:00:00 GMT-0700 (Mountain Standard Time)
End Date Sat May 23 2026 01:00:00 GMT-0600 (Mountain Daylight Time)
Parameter Name Total Dissolved Gas (TDG)
Parameter Group Inorganic Analytes
Parameter Transformation instant
Time Step daily
Parameter Unit mm Hg
Item Vertical Datum
Update Frequency daily
Last Update Sunday, May 24th, 2026

Disclaimer

Data are provisional and subject to revision unless otherwise noted. Data users are cautioned to consider carefully the provisional nature of the information before using it.

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