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ASTM D 5611 : 1994 : R2016

Current
Current

The latest, up-to-date edition.

Standard Guide for Conducting a Sensitivity Analysis for a Groundwater Flow Model Application
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2016

CONTAINED IN VOL. 04.08, 2018 Defines techniques that should be used to conduct a sensitivity analysis for a groundwater flow model.

1.1This guide covers techniques that should be used to conduct a sensitivity analysis for a groundwater flow model. The sensitivity analysis results in quantitative relationships between model results and the input hydraulic properties or boundary conditions of the aquifers.

1.2After a groundwater flow model has been calibrated, a sensitivity analysis may be performed. Examination of the sensitivity of calibration residuals and model conclusions to model inputs is a method for assessing the adequacy of the model with respect to its intended function.

1.3After a model has been calibrated, a modeler may vary the value of some aspect of the conditions applying solely to the prediction simulations in order to satisfy some design criteria. For example, the number and locations of proposed pumping wells may be varied in order to minimize the required discharge. Insofar as these aspects are controllable, variation of these parameters is part of an optimization procedure, and, for the purposes of this guide, would not be considered to be a sensitivity analysis. On the other hand, estimates of future conditions that are not controllable, such as the recharge during a postulated drought of unknown duration and severity, would be considered as candidates for a sensitivity analysis.

1.4This guide presents the simplest acceptable techniques for conducting a sensitivity analysis. Other techniques have been developed by researchers and could be used in lieu of the techniques in this guide.

1.5This guide is written for performing sensitivity analyses for groundwater flow models. However, these techniques could be applied to other types of groundwater related models, such as analytical models, multi-phase flow models, non-continuum (karst or fracture flow) models, or mass transport models.

1.6This guide is one of a series on groundwater modeling codes (software) and their applications, such as Guide D5447 and Guide D5490. Other standards have been prepared on environmental modeling, such as Practice E978.

1.7The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.8This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

1.9This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.

Committee
D 18
DocumentType
Guide
Pages
6
ProductNote
Reconfirmed 2016
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 5981/D5981M : 2018 Standard Guide for Calibrating a Groundwater Flow Model Application
ASTM D 5718 : 2013 Standard Guide for Documenting a Groundwater Flow Model Application (Withdrawn 2022)
ASTM D 6170 : 2017 Standard Guide for Selecting a Groundwater Modeling Code
ASTM E 2081 : 2000 : R2015 Standard Guide for Risk-Based Corrective Action
ASTM D 5447 : 2017 Standard Guide for Application of a Numerical Groundwater Flow Model to a Site-Specific Problem
ASTM D 6033 : 2016 Standard Guide for Describing the Functionality of a Groundwater Modeling Code

ASTM D 5447 : 2004 Standard Guide for Application of a Ground-Water Flow Model to a Site-Specific Problem
ASTM D 653 : 2007 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 5447 : 2017 Standard Guide for Application of a Numerical Groundwater Flow Model to a Site-Specific Problem
ASTM D 653 : 2022 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 5447 : 2004 : R2010 Standard Guide for Application of a Groundwater Flow Model to a Site-Specific Problem
ASTM D 5490 : 1993 : R2014 : EDT 1 Standard Guide for Comparing Groundwater Flow Model Simulations to Site-Specific Information (Withdrawn 2023)
ASTM D 653 : 2020 : EDT 1 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 5490 : 1993 : EDT 1 Standard Guide for Comparing Ground-Water Flow Model Simulations to Site-Specific Information
ASTM D 653 : 2021 : REV A Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 : REV B Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 5490 : 1993 : R2008 Standard Guide for Comparing Groundwater Flow Model Simulations to Site-Specific Information
ASTM D 5447 : 1993 : EDT 1 Standard Guide for Application of a Ground-Water Flow Model to a Site-Specific Problem (Withdrawn 2002)
ASTM E 978 : 1992 Practice for Evaluating Mathematical Models for the Environmental Fate of Chemicals (Withdrawn 2001)
ASTM D 653 : 2014 : REDLINE Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 5490 : 1993 : R2002 Standard Guide for Comparing Ground-Water Flow Model Simulations to Site-Specific Information

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