Third Party Software

Third party software consists of groundwater and return flow software developed outside of CDSS.  Three products are available:  MODFLOW-CDSS, MODFLOW-2000 and IDS Alluvial Water Accounting System.

MODFLOW-CDSS
MODFLOW-CDSS is a three-dimensional, finite-difference groundwater-flow model based on MODFLOW-2005, with two modifications for CDSS. The first modification is the introduction of a Partition Stress Boundaries capability, which enables the user to partition a selected subset of MODFLOW’s stress-boundary packages, with each partition defined by a separate input file. Volumetric water-budget components of each partition are tracked and listed separately in the volumetric water-budget tables.

The second modification enables the user to specify that execution of a simulation should continue despite failure of the solver to satisfy convergence criteria. This modification is particularly intended to be used in conjunction with automated model-analysis software; its use is not recommended for other purposes.

Major Features:
  • The ability to partition a selected subset of MODFLOW’s stress-boundary packages
  • Enables the user to specify that execution of a simulation should continue despite failure of the solver to satisfy convergence criteria
Common Uses:
  • Ability to get volumetric water-budget components of each partition that are tracked and listed separately in the volumetric water-budget tables
  • Solver modification is intended to be used in conjunction with automated model-analysis software where convergence becomes an issue; its use is not recommended for other purposes
Downloads:
Name Description File Type Release Date
MODFLOW-CDSS A version of MODFLOW-2005 with modifications for Colorado's Decision Support Systems. Link 9/30/2011
MODFLOW-CDSS Report Report describing MODFLOW-CDSS, a three-dimensional, finite-difference groundwater-modeling program. Link 9/30/2011

MODFLOW-2000
MODFLOW is a finite-difference groundwater model developed by the US Geological Survey. Users can download groundwater modeling software (MODFLOW-2000) for use in conjunction with baseline data sets developed through the CDSS (see Modeling Data section).

Major Features:
  • Provides links to download modeling software and related documentation
  • Provides existing data sets developed for the Rio Grande Basin (Division 3) as part of the Rio Grande Decision Support System (RGDSS)
  • Will provide data sets for groundwater modeling in the South Platte Basin upon completion, as part of the South Platte Decision Support System (SPDSS)
Common Uses:
  • Download RGDSS data sets for groundwater model in the San Luis Valley
Downloads:

Name Description File Type Release Date
MODFLOW- 2000 Principia version as enhanced for RGDSS project, produces key output files and is independent of graphical interface Zip 6/25/2005
MODFLOW- 2000 Release Notes Release notes for Principia version as enhanced for RGDSS project PDF 6/25/2005
MODFLOW-2000 w/Doherty Enhancement Doherty Enhancement version of MODFLOW-2000 Exe 01/23/2014
MODFLOW-2000 w/Doherty Enhancement - Source Code Source code for the Doherty Enhancement of MODFLOW-2000 Zip 01/23/2014



IDS Alluvial Water Accounting System
IDS Alluvial Water Accounting System (IDS AWAS) is a river depletion model developed by the Integrated Decision Support (IDS) group at Colorado State University (CSU).

Major Features:
  • Uses the Glover method to calculate return flows
  • Relies on various user input data such as aquifer boundary condition, transmissivity, and distance to river and to alluvial boundary
Common Uses:
  • Calculate return flows associated with a historical CU analysis
  • Calculate recharge rates associated with a recharge facility
  • Calculate lagged depletions to the river as a result of well pumping