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{parent-space}DASHBOARD{parent-space}

{info}This is the home page for the National Groundwater Modelling System  project of the Environment Agency of England and Wales. Persons that do  not participate in this project are not allowed to take any advantage on  the contents of these pages.{info}

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h2. Introducing the NGMS

The NGMS is a scenario analysis tool to assess the impacts of abstractions on the groundwater resources and the surface water flows.

The system contains a set of default scenarios which allow the user to understand the interaction relations between the various components in the system. To analyse a change in artificial influences (i.e. human interventions), what-if scenarios can be conducted by modifying the input of the default runs. Modifications that are supported so far are changes in abstraction rates or the addition or removal of abstractions.

Based on the scenario definition, the NGMS executes a sequence of data processing steps to preprocess the input to the groundwater model, to run the model and to postprocess the data. The output can be presented in time series graphs, accretion profiles or spatial plots. The system automatically conducts a data comparison between different runs.

The NGMS is implemented as a client server system. Groundwater models are located at a central server while Operator Client-applications are distributed to the area staff offices. via this Client-application, area staff can download data from the server to view and export for utilization in other applications. They also can send of what-if sceanrios to be run on the server. In addition to the computation oriented system, a website is put in place to provide background documentation to the groundwater models of England and Wales

h2. The NGMS project

The NGMS project is commissioned by the water resources division of the [Environment Agency of England and Wales|www.environment-agency.gov.uk]. The project is implemented by a consortium composed of [Deltares|www.deltares.nl](lead), [Tessella Support Services ltd|www.tessella.com]. (IT-services) and [Environmental Simulations International |www.esinternational.com](hydrogeological expertise, configuration services). The project is conducted in co-operation with the EA and the UK-GW consultant [Entec|www.entecuk.co.uk] (configuration services). For the latest project management details including the model upload schedule look at the [project management page|Project Management].

h2. The NGMS Configuration

The NGMS is implemented using DelftFEWS-software, Modflow and a Modflow Module Adapter. The outline as described in the introduction is elaborated in more detail at the [NGMS Concept page|The NGMS Concept]. This NGMS concept has been transferred into a [configuration concept|Transforming NGMS Concepts into FEWS configuration], which utilizes some of the [basic terms underlying FEWS|FEWS concepts in relation to NGMS]. A [step-by-step instruction|HOW TO add a new model to an NGMS application] has been created to upload a new model to the system. To speed up this process a [data standardization|Data provision for adding a model to the NGMS] has been applied to describe the models and all its relevant locations (abstractions, gauges, observation boreholes etc.)

The [Regional configuration section|Regional configuration notes] gives an overview of the current status of the configuration for each region (under construction)
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h2. Table of Contents
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h2. Delft-FEWS and NGMS Documentation

* [NGMS help (PR10) (PDF)|^Help.pdf]
* [NGMS Installation Manual (PDF)|^105330_NGMSprod_r1.4_installation_manual.pdf]
* [NGMS configuration manual (wiki)|HOW TO add a new model to an NGMS application]
* [Delft FEWS user manual on-line (external wiki)|http://public.wldelft.nl//x/L4AJ]
* [NGMS Test Procedures for setting up new model (PDF)|^UK Memo 080919 NGMS test scripts for testing new model.pdf]\\
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