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GroMoPo Metadata for Netherlands analytic element model

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Created: Feb 08, 2023 at 3:20 a.m.
Last updated: Feb 08, 2023 at 3:20 a.m.
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In 1985, I attended the first course on analytic element modeling in the Netherlands, where Professor Otto Strack of the University of Minnesota presented his newly conceived analytic element method (AEM; Strack 1989) at the Technical University Delft from which he graduated years before. While he explained the principles and applications of the method, I started to realize that the AEM might be uniquely suited to modeling detailed ground water flow systems covering large regions because it enables cutting, pasting, and linking of entire models as well as of model parts. In 1987, at the National Institute for Inland Water Management and Waste Water Treatment in the Netherlands (RIZA), there was much interest in national modeling in the Netherlands because of serious water management problems that first became apparent during the major drought of 1976. In fact, there existed a national water management system of models, called PAWN (Policy Analysis for Water management in the Netherlands; Rand Corporation 1982). PAWN is an integrated system of models for simulating the distribution over the numerous national and regional surface waters in this wet country and the effects on agriculture, nature (ecology), power plants, shipping, flushing of coastal areas against salt water intrusion, and drinking water. PAWN was lacking treatment of the ground water reservoir, which had become apparent in the policy analysis of 1985 (Pulles 1985). The NAtional GROundwater Model (NAGROM) should cover this gap as part of PAWN.

Subject Keywords



Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
North Latitude
East Longitude
South Latitude
West Longitude


Additional Metadata

Name Value
DOI 10.1111/j.1745-6584.2005.00142.x
Depth 50
Scale National
Layers > 20 layers
Purpose Groundwater resources;Groundwater contamination;Scientific investigation (not related to applied problem);Waste water treatment
GroMoPo_ID 161
IsVerified True
Model Code MLAEM
Model Link
Model Time SS
Model Year 1997
Model Authors W. J. de Lange
Model Country Netherlands
Data Available Report/paper only
Developer Email
Dominant Geology Unconsolidated sediments
Developer Country Netherlands
Publication Title Development of an analytic element ground water model of the Netherlands
Original Developer No
Additional Information NAGROM is a steady state model based on the Analytic Element Method (AEM). It models the entire groundwater system in several aquifers and aquitards, down to an impermeable base.
Integration or Coupling Surface water;Water use;Water management
Evaluation or Calibration Static water levels;Dynamic water levels
Geologic Data Availability

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Netherlands analytic element model, HydroShare,

This resource is shared under the Creative Commons Attribution CC BY.


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