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
DOI 10.3133/tm6A34
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