Use of Multi-Node Wells in the Groundwater-Management Process of MODFLOW?2005 (GWM?2005) - Softcover

Ahlfeld, David P; Barlow, Paul M

Softcover

ISBN 10: 1500296767 ISBN 13: 9781500296766

Publisher: CreateSpace Independent Publishing Platform, 2014

Synopsis

Many groundwater wells are open to multiple aquifers or to multiple intervals within a single aquifer. These types of wells can be represented in numerical simulations of groundwater flow by use of the Multi-Node Well (MNW) Packages developed for the U.S. Geological Survey’s MODFLOW model. However, previous versions of the Groundwater-Management (GWM) Process for MODFLOW did not allow the use of multi-node wells in groundwater-management formulations. This report describes modifications to the MODFLOW–2005 version of the GWM Process (GWM–2005) to provide for such use with the MNW2 Package. Multi-node wells can be incorporated into a management formulation as flow-rate decision variables for which optimal withdrawal or injection rates will be determined as part of the GWM–2005 solution process. In addition, the heads within multi-node wells can be used as head-type state variables, and, in that capacity, be included in the objective function or constraint set of a management formulation. Simple head bounds also can be defined to constrain water levels at multi-node wells. The report provides instructions for including multi-node wells in the GWM–2005 data-input files and a sample problem that demonstrates use of multi-node wells in a typical groundwater-management problem.

Edition details

• Publisher: CreateSpace Independent Publishing Platform
• Publication date: 2014
• Language: English
• ISBN 10: 1500296767
• ISBN 13: 9781500296766
• Binding: Paperback
• Number of pages: 32