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MODFLOW Data Model

MODFLOW Data Model. An extension of the Arc Hydro Groundwater Simulation feature dataset. MODFLOW Data Model. Data standard for storing MODFLOW models in a GIS database Importing models built externally Archiving calibrated models Building new MODFLOW models inside ArcGIS

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MODFLOW Data Model

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  1. MODFLOW Data Model An extension of the Arc Hydro Groundwater Simulation feature dataset

  2. MODFLOW Data Model • Data standard for storing MODFLOW models in a GIS database • Importing models built externally • Archiving calibrated models • Building new MODFLOW models inside ArcGIS • Custom scripts for analyzing/modifying models can be developed as geoprocessing tools

  3. Simulation Feature Data Set

  4. Boundary Polygon J I

  5. Cell2D and Node2D Features Cell2D Node2D

  6. Conceptual Model - Hydrogeology

  7. Ancestral Streams

  8. Ancestral Streams

  9. Ancestral Streams

  10. Riverbank Model Layer 1 • Consists of sands, silts, and clays from floodplain and alluvial deposits • Superjacent ancestral stream channels cut across this formation creating lateral channels of gravels and unconsolidated sediments

  11. Turlock Lake Laguna Formation Model Layers 3,4 and 5 • Predominantly consists of sands, silts, and clays • Superjacent ancestral stream channels cut across this formation, creating lateral channels of gravels and unconsolidated sediments

  12. Mehrten Formation Model Layers 6,7 and 8 • Composed of two dominant units: • Black andesitic sands “salt and pepper sand” and blue and brown clays • Hard gray and black tuff-breccias “lava”

  13. Valley Springs Formation Model Layer 9 • Consists of rhyolite ash, quartz sand , and ashy clay

  14. Ione Formation Model Layer 10 • Consists of sandstone, silts, and clays

  15. MODFLOW Data Model

  16. MODFLOW Analyst Tools • Developed as geoprocessing (GP) tools • Classes of tools • Import • Export • Visualization/Map Layers • Model editing • Building package input • Working with transient input/solutions

  17. Import MODFLOW Model Tool INPUT OUTPUT

  18. Make MODFLOW Features Tool + Or Node2D Cell2D INPUT OUTPUT

  19. Map Layer – Computed Head

  20. Build Package Input • Discretize: • Spatial • Polygons  K zones (overlay) • Points  K values (interpolate) • Polylines  River cells • Points  Wells • Temporal • Time Series  Stress Periods

  21. Discretization of Features

  22. Geoprocessing Tools

  23. Geoprocessing Tools

  24. Geoprocessing Tools - Workflows • GP tools enable the development of workflows as models or scripts • Extendable – You can create your own workflows • Leverage low-level tools to create new tools

  25. For more information http://www.archydrogw.com (AHGW Wiki page) http://www.aquaveo.com/archydro (Info on tools) Norm Jones njones@aquaveo.com

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