The MODFLOW Help File

Version 1.0.0

©1995,1996, Richard B. Winston

Please Register

Last modified on Wednesday, January 31, 1996 - 7:16:08 PM

Contents

• Preface
• Acknowledgments
• Plans for the Future
• Modifying this document
• Structure of this document
• Introduction
  • License agreement
  • How to register
  • Feedback
  • Conventions used in this document
• MODFLOW tutorial
  • MODFLOW Overview
  • Using a Word Processor with MODFLOW
  • All you need to know about the FORTRAN formats in MODFLOW
• Input instructions and reference guide for MODFLOW
  • Array entry utilities
    • 2-Dimensional Real Arrays, U2DREL
    • 1-Dimensional Real Arrays, U1DREL
    • 2-Dimensional Integer Arrays, U2DINT
  • Basic Package (BAS1) Required for all models
  • Output Control Option (OC)
  • Groundwater Flow
    • Block Centered Flow Packages Required for all models
      • Version 1 (BCF1)
      • Version 2 (BCF2)
      • Version 3 (BCF3)
    • Interbed Storage Package (IBS1)
    • Horizontal Flow Barrier Package (HFB1)
    • General Finite Difference Flow Package (GFD1) (not yet included in this document)
  • Boundary Conditions
    • Specified Head Boundaries
      • Basic Package (BAS1)
      • Time-Variant Specified-Head Package (CHD1)
      • General-Head Boundary Package (GHB1)
    • Specified Flow Boundaries
      • Recharge Package (RCH1)
      • Well Package (WEL1)
    • Head Dependent Flow
      • Drain Package (DRN1)
      • River Package (RIV1)
      • Stream Package (STR1)
      • Evapotranspiration Package (EVT1)
      • Transient Leakage Package (TLK1) (not yet included in this document)
      • General-Head Boundary Package (GHB1)
  • Solvers Required for all models
    • Strongly Implicit Procedure Package (SIP1)
    • Slice-Successive Overrelaxation Package (SOR1)
    • Preconditioned Conjugate Gradient Package 1 (PCG1) (not yet included in this document)
    • Preconditioned Conjugate Gradient Package 2 (PCG2)
• MODFLOW-Related Resources
• Glossary
• Index (not yet included in this document)
• References