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Cold-water fish species such as trout and salmon are highly valued components of many stream ecosystems in Michigan and the Great Lakes region and are sensitive to rising stream temperatures. For example, the timing of spawning and development rates of these species are affected by stream temperature from late fall through spring. Historically, stream temperature modeling has focused on air temperature and solar radiation as the main drivers of stream temperature, while streams that are fed by groundwater are often viewed as being less affected by climate warming. However, as the climate continues to warm, groundwater temperatures could also rise, thereby contributing to warming stream temperatures and reducing...
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This archive contains the code and other files to demonstrate the creation and application of an impulse-response emulator for process-based groundwater flow and transport models in MODFLOW/MT3D. This includes creating a synthetic modeling environment in MODFLOW/MT3D, using PEST++ to derive an impulse-response (A) matrix (as described in White et al., 2020), using this A matrix to create a groundwater transport emulator model, and providing a workflow to evaluate the performance of this emulator across a range of flow and transport model parameters.


    map background search result map search result map Groundwater and Stream Temperature Modeling to Assess the Effect of Warming Temperatures on Coldwater Fish Groundwater and Stream Temperature Modeling to Assess the Effect of Warming Temperatures on Coldwater Fish