SFRmaker

SFRmaker automates construction of stream flow routing networks and generates MODFLOW SFR package input files from hydrography polyline shapefiles to represent surface-water/groundwater interactions in groundwater models.

Key Features:

• Automation: Automates integration of surface-water boundary conditions and generation of inputs formatted for the MODFLOW SFR package.
• Implementation: Provided as a Python package for programmatic generation of stream-routing inputs.
• Data input flexibility: Accepts hydrography provided as polyline shapefiles and structured grids defined by a shapefile or a Flopy StructuredGrid instance.
• Grid intersection: Intersects hydrography polylines with a structured grid to assign stream reaches to model cells.
• Reproducibility and error reduction: Minimizes manual editing to reduce human error and improve reproducibility of model inputs.
• Support for iterative modeling: Facilitates step-wise model development by reducing dependency on specific conceptual models or discretization schemes.
• Processing performance: Automates workflows to reduce the time required to produce SFR inputs from manual procedures.

Scientific Applications:

• Groundwater modeling: Generation of SFR inputs for MODFLOW to represent stream-groundwater exchange and routing in groundwater models.
• Boundary condition generation: Creation of surface-water boundary conditions for coupled water-cycle and hydrologic modeling.
• Multi-scale application: Application demonstrated across spatial scales from county to multi-state models.

Methodology:

Intersect hydrography polyline shapefiles with a structured grid (shapefile or Flopy StructuredGrid instance) to produce MODFLOW SFR package input files.