Total Dissolved Gas Fixed Monitoring Station Data (TDGFMS)



  • These data are obtained from the Army Corps of Engineers. The data are available through their ftp site: http://www.nwd-wc.usace.army.mil/ftppub/cafe/ reports r600.txt through r611.txt. The graphs presented on this page present four separate parameters available for each fixed monitoring site. The parameters are barometric pressure, total gas pressure, and temperature which are all measured parameters. As well as total dissolved gas saturation which is calculated from barometric pressure and total gas pressure but also provided in the reports.
  • These graphical representations are provided to facilitate comparing data between sites (such as temperature and barometric pressure) and over time.
  • Data are graphed in six groupings of sites:
    • Columbia Below TDA -- includes monitors from The Dalles Dam down to the tailwater monitor below Bonneville Dam at Camas/Washougal.
    • McNary and John Day -- includes monitors from McNary and John Day dams.
    • Lower Snake -- includes monitors from Little Goose forebay to Ice Harbor tailwater.
    • Snake and Clearwater -- includes monitors from Dworshak tailwater, Clearwater River, Snake at Anatone, and Lower Granite Dam.
    • Mid-Columbia -- includes monitors from Rock Island Tailwater to Pasco.
    • Upper and Mid-Columbia -- includes monitors from Chief Joseph tailwater down to Rock Island forebay.
    • Upper Columbia -- includes monitors from Canadian Boundary, Downstream of Libby, and Hungry Horse, Grand Coulee, and Chief Joseph forebay. down to Rock Island forebay.
  • Definitions for FMS site abbreviations: (For more detailed information see Army Corps of Engineers website).
    • LIB Downstream of Libby Dam
    • HHS Downstream of Hungry Horse
    • CIBW Canadian Boundary
    • GCLF Grand Coulee forebay
    • GCL Grand Coulee tailwater
    • CHJ Chief Joseph forebay
    • CHDS Chief Joseph downstream
    • WLS Wells forebay
    • WLDS Wells downstream
    • RRH Rocky Reach forebay
    • RRTW Rocky Reach tailwater
    • RIS Rock Island forebay
    • RITW Rock Island tailwater
    • WANU Wanapum forebay
    • WNT Wanapum tailwater
    • PRD Priest Rapids forebay
    • PRW Downstream Priest Rapids
    • PAS Pasco (Columbia above Snake confluence)
    • DWR Dworshak tailwater
    • CLW1 Clearwater River
    • ANA Snake at near Asotin
    • LWST Clearwater above Lewiston
    • LGR Lower Granite forebay
    • LGTW Lower Granite tailwater
    • LGS Little Goose forebay
    • LSTW Little Goose tailwater
    • LMN Lower Monumental forebay
    • LMTW Lower Monumental tailwater
    • IHR Ice Harbor forebay
    • IHTW Ice Harbor tailwater
    • MCNO McNary forebay Oregon side
    • MCNW McNary forebay Washington side
    • DWMN McNary tailwater
    • JDA John Day forebay
    • JDTW John Day tailwater
    • TDA The Dalles forebay
    • DSTD The Dalles tailwater
    • BON Bonneville forebay
    • WRNO Warrendale (Bonneville tailwater)
    • SKAW Skamania (below Bonneville)
    • CWMW Camas/Washougal (below Bonneville)


Page last updated on: March 6, 2014

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