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Main page Deltares Data Portal
If you want to find data based on a geographical or a temporal extent, click on "Advanced search". A new search screen opens, see image below. On the map you can see the spatial extent of the datasets in the catalogue, delineated by the orange rectangles. Here you can find datasets You can make a search request based on "the 'What?"', "'When?" and / or "Where" criteria. You can make a search request based on either on of these criteria, or combining them' and 'Where' criteria. If you leave one blank the criteria will not be used.
What: type one or more search terms. The site will automatically make suggestions based on your input. If you don't want to use a suggestion, press the Escape button. The catalogue will search through all information of the dataset using there search terms, such as the organisation, key words, topics, type of resource. Thus the search terms can apply to many aspects of the datasets.
When: select the time (period) for which the dataset provides information.
Where: first, zoom in on the world map to the area of interest using the mouse scroll button or the buttons on the top right. Next, select the "Draw" button on 
on the top left of the map and to select an area. The spatial extent is shown by a red rectangle. To stop selecting an area and continue browsing the map, click Click on the " Draw " button again to deselect the Draw tool.
Advanced search window
When done, press enter or the "Search" button. The results are shown below. Depending on the search results, on the left side of the screen are a set of filters to further narrow down the results.
Filters (left) and search results (right)
The tiles of the search results show basic information on the dataset. Click on a tile to see detailed information, including links to the dataset itself. The figure below shows an example of the detailed view of the Gebco08 dataset. Depending on the available resources of the dataset, one or more links and downloads are shown. In this dataset, there is a WMS-server available (see WMS-primer for info about WMS), a WFS server (see WFS-primer), an OWS service, an Atom feed and (for most users the easiest and most important) the Download of the original data. Please note that for some datasets, the actual data is hosted on another site and only a link to that site is provided. Click here for more a more detailed explanation on retrieving data from the Deltares Data Portal.
