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Dissolved Gas Modeling Core Team

Dissolved Gas Modeling Core Team was formed as a part of the Dissolved Gas Abatement Study (DGAS) run by the U.S. Army Corps of Engineers. Our ultimate goal is to provide tools for the Corps to better analyze the effects of different operations of the dams on the river system. In particular, we focus on the problem of dissolved gas being generated by the dams and its effects on the fish.

Who We Are

We are a group of scientists, engineers, and data specialists who have been contracted by the COE from a variety of institutions.

Aspen Applied Sciences
Larry Fidler
Batelle Pacific Northwest Laboratories
Tom Carlson
Marshall Richmond
University of Washington
Jim Anderson
Pam Shaw
US Army Corps of Engineers, Portland
Joe Carroll
George Kalli
Rock Peters
Mark Smith
US Army Corps of Engineers, Walla Walla
Rick Emmert
Kim Fodrea
Russ Heaten
Thomas Miller
Chris Pinney
Organization Not Identified
Mike Schneider
Steve Wilhelms

Computer Models of salmon and the river system

The Columbia River Salmon Passage (CRiSP) model is an interactive, multiple window program that helps managers of water, hydropower, fisheries and recreation see the impact of their decisions on fish populations in the Columbia River.
Gas Production
For CRiSP.1.6 new equations have been implemented for gas production from spill. As a part of the US Army Corps' Gas Abatement study, Waterways Experiment Station (WES) has developed these new equations as an improvement over GASPILL, which had been the predominantly used model for gas production.
Columbia Basin Modeling for Dissolved Gas Study, PNNL
As part of the U.S. Army Corps of Engineers Dissolved Gas Abatement Study (DGAS), Pacific Northwest National Laboratory is applying a mathematical model of unsteady state flow and gas transport to the Columbia and Snake River Systems. The model will be used to provide unsteady river flow rates, velocity, and dissolved gas concentration to fisheries biology models.

Data Collection on gas levels in the river and on fish


Meeting Archive for the Dissolved Gas Modeling Core Team

Meeting Agendas

  • May.20.97 -- no agenda available
  • Jan.7-9.97
    • 7 January 1997 Pre-agency Briefing Meeting Agenda
      Numerical Models. Review of Richmond/Fidler models. DEMO and short discussion of "platform" questions, gas production function incorporation & testing, and logistics/priorities with researchers and physical surveyors.
      Agency Briefing Discussion and Preparation.
    • 8 January 1997 Agency Briefing Meeting Agenda
      Overview of Fixed Monitoring System (Bolyvong Tanovan)
      Overview of the Dissolved Gas Abatement Study (Kim Fodrea / Rock Peters)
      DGAS Alternative Analysis (Kim Fodrea / Steve Wilhelms)
      Prototype Gas Abatement Structure (Martin Ahmann)
      TDG Field Research (Joe Carroll)
      Biological Research (Rock Peters)
      Numerical Model Development (Chris Pinney)
      System-wide Alternative Analysis (Tom Carlson)
      Schedule (Kim Fodrea)
      Open Discussion
    • 9 January 1997 DGAS Model Core Team Meeting Agenda
      1. Discuss and demo new TDG functionality in CRiSP model
      2. Discuss new research from other modelers (Fidler, Richmond, Schneider) and possible manner of inclusion in CRiSP model
      3. Future research and field studies
      4. Other ideas ...
  • Dec.5.96
    Model demo and critique of 1) Battelle's TDG transport and mixing model, and 2) Fidler's IHR reach model.
    Most recent derivations of WES' TDG production and near field data analyses and how to best represent in Battelle and Fidler's models.
    Model "platform"/coding, resolution, scale, compatability, and logical structural linkages between WES' field data analyses and Battelle/Fidler models.
    Identification of priority reaches for 1997 biological and physical data collection efforts drawn on river atlas, including comments submitted to Joe Carroll on Draft Plan of Study for 1997 Hydrodynamics Field Sampling.
    Wrap-up. Decision if 6 December continuation is needed.
  • Sep.12.96
    Near-field TDGS Monitoring Results
    - Joe Carroll, Mike Schneider
    Participant's Tasking Status and FY97 Plans & Needs
    - Joe Carroll and Mike Schneider
    - Marshall Richmond
    - Larry Fidler
    - Jim Anderson and Pam Shaw
    Database acquisition coordination (links, permissions, nodes, and pathways)
    - All
    FY97 and beyond to FY99 Research, new and continueing
    - Corp's AFEP List
    - Fidler's canulation for bubble growth
    - Eric May's adult tracking with blood gas analyzer
    Focusing information gained, methods, and techniques for specific structural alternative evaluation.
  • Mar.12.96
    1. Phase I CRiSP sensitivity results with discussion on what are the best descriptive outputs for Phase II level analyses-(Shaw and Pinney). NMFS Gas Bubble Expert Panel recommendations for research and descriptive outputs-(Fidler and Pinney).
    2. Status of everyone's activities; short demos on
      • Fidler's neural network analysis,
      • Shaw's 2d function developed in CRiSP,
      • WES; Mike's sourcing algorithms, Joe's transecting 1996,
      • Richmond's / Perkin's 1d/quasi-2d unsteady flow transport.
    3. Tasking direction/revision for Phase II modeling.What data and information is primary to representing structural alternative benefits or detriments?What scale of resolution can we really achieve/hope for?
    4. Discussion led by Larry on his database work funded by BPA, ending with a list of recommended analysis and evaluation methodologies and needs for bounding, hypothesis and uncertainty testing/hot regional questions.
    5. Others; 1996 Scopes of Work, Contracts, etc...,etc....
  • Nov.2.95
    1. Wilhelms/Carroll/Schneider discussion on gas production and transect study data compilation and analysis.
    2. Univ. of Washington's DGAS Model Group WWW Webpage construction and usage.
    3. FY96 Funding impacts to schedule and scope.
    4. ANCOOR PATH process and NMFS/EPA TDG TWG update related to DGAS.
    5. Others.

Meeting Notes