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MODFLOW-LGR-Modifications to the streamflow-routing package (SFR2) to route streamflow through locally refined grids

Techniques and Methods 6-A34

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Abstract

This report documents modifications to the Streamflow-Routing Package (SFR2) to route streamflow through grids constructed using the multiple-refined-areas capability of shared node Local Grid Refinement (LGR) of MODFLOW-2005. MODFLOW-2005 is the U.S. Geological Survey modular, three-dimensional, finite-difference groundwater-flow model. LGR provides the capability to simulate groundwater flow by using one or more block-shaped, higher resolution local grids (child model) within a coarser grid (parent model). LGR accomplishes this by iteratively coupling separate MODFLOW-2005 models such that heads and fluxes are balanced across the shared interfacing boundaries. Compatibility with SFR2 allows for streamflow routing across grids. LGR can be used in two- and three-dimensional, steady-state and transient simulations and for simulations of confined and unconfined groundwater systems.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
MODFLOW-LGR-Modifications to the streamflow-routing package (SFR2) to route streamflow through locally refined grids
Series title:
Techniques and Methods
Series number:
6-A34
Year Published:
2011
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Contributing office(s):
Branch of Regional Research-Central Region
Description:
v, 12 p.; Appendix
First page:
i
Last page:
14
Online Only (Y/N):
Y
Additional Online Files(Y/N):
N