Rio Grande Transboundary Integrated Hydrologic Model: Modeling Conjunctive Use to Support Resource Management

Science Center Objects

The Palomas, Mesilla, and Conejos-Médanos Basins in New Mexico, Texas, and northern Mexico compose a geologically and hydrologically complex region. The conjunctive use of surface water and groundwater takes place under a myriad of legal and operational constraints, including the Rio Grande Compact, an international treaty, and the U.S. Bureau of Reclamation’s Rio Grande Project. New demands are being placed on the interconnected water system, even as the region is experiencing an extended drought.

Boundary of Model Grid, NM Water Science Center

Boundary of Model Grid, NM Water Science Center

(Public domain.)

 

Objective:

Develop the Rio Grande Transboundary Integrated Hydrologic Model (RGTIHM) in order to better understand the complex hydrogeologic flow system and support ongoing resource-management decisions.

     

    Santa Fe Group Boundary Model, NM Water Science Center

    Santa Fe Group Boundary Model, NM Water Science Center

    (Public domain.)

     

    Approach:

    RGTIHM uses the USGS MODFLOW One-Water Hydrologic Flow Model (MF-OWHM) to build on previous hydrologic modeling efforts by:

    1. Expanding the model to more fully incorporate the Conejos-Médanos Basin
    2. Refining the model grid and stress periods
    3. Incorporating new work on the hydrogeologic framework
    4. Refining the water-use framework
    5. Improving the dynamic simulation of water-management alternatives.