C@LRIS is a Calamity Abatement Support web application created for the Flemish waterway authorities implemented by following the River Information Services guidelines.

The Flemish waterway authorities realised a single window towards the end-users by means of a redundant RIS-centre environment (i.e. Hasselt and Evergem), which are 24/7/365 available. Since all information is available within this environment, it is possible to act as a single point of contact in case of an incident/calamity. One of both centres can be contacted by means of a general toll-free number. From the moment a RIS-operator is contacted, the call is registrated by means of the calamity abatement information and support system, named C@LRIS (meaning, in case of a CALamity, CALL RIS for support).

Basic components of C@LRIS:

  • Secured web application
  • Register incoming phone calls
  • Escalate registrations to calamities
  • Consult electronic emergency plans
  • Consult external resources
  • Communicate with people in the field


Important features of the C@LRIS web application:

  • C@LRIS portal giving immediate access to a quick overview of the latest registrations, calamities, communications, personal task list and more allowing customizable state and date filtering and page refresh settings (Figure 9).
  • The incoming calls registration page automatically opens when the operator is logged on and someone calls the RIS centre. All communications are automatically logged and can be viewed in the communications overview.
  • The registration of waterway events with different types and states with customizable fields.
  • Escalate registrations to calamities and undertake appropriate actions guided by customizable electronic emergency plans.
  • Create and organize electronic emergency plans using contact roles and adding tasks for every possible event and area.
  • Organize contacts and assign them to predefined roles.
  • Run customizable alert procedures to automatically inform public emergency services by an automated telephone call, e-mail, sms, fax or personal call when calamities occur.


C@LRIS exchanges information with various systems. For some parts in this system architecture the concepts of Service Oriented Architecture are applied. This means that some of the information exchange is based on services and the exchange of messages. The information exchange contains the following components:

  • EPABX: A telephone switch using VOIP technology. Telephone support is a core service within C@LRIS. The EPABX also supports sending faxes.
  • Sms modem: The sms modem supports sending and receiving sms messages for the C@LRIS web application and the guard, alert and registration system (GARS).
  • E-mail server: The e-mail server takes care of sending and receiving e-mails.
  • FTP site: An FTP site supports the publication of archived files.
  • CAS External: Various messages can be exchanged with external RIS systems, e.g. NOT Emergency and NtS messages.
  • CAS Internal: C@LRIS can be hosted at different sites within a country or region and synchronizes at database level between these sites using MS SQL Server Replication.
  • AIS: Publish messages to the AIS network, which supports sending messages directly to vessels in the field.
  • Web services: Connection with various web services is possible, e.g. hydro meteo web services providing accurate water level information.


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