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Sophea
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How it works

From area to answer, in four steps

You choose an area; Sophea loads the objects of the Dutch Key Register of the Subsurface (BRO) in that area and answers your questions about them with charts, maps, well diagrams and time-series models.

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  1. StepChoose an areaA circle, a municipality, your own shape or a shapefile.
  2. StepSophea loads the BRO objectsYou see the progress per object type.
  3. StepAsk your questionIn plain language, as you would ask a colleague.
  4. StepModel and judgeWith Pastas, and the judgement stays with you.

  1. Step 01 · Area

    Choose an area

    Choose your area the way that suits you: a circle, a municipality, a province, a water board, a drinking-water company's supply area, a shape you draw or a shapefile.

    Or choose an organisation: the wells it has registered in the BRO as bronhouder (the public body responsible for the registration), anywhere in the Netherlands.

    Your shapefile stays on your computer: Sophea reads it in the browser and sends only the outline.

    Public BRO data
    A drawn area on the map of a town centre
    Drawing an areaSophea with public BRO dataSophea with public BRO data; detail of the screen

  2. Step 02 · Load

    Sophea loads the BRO objects

    A small area is ready within minutes; a province or a large organisation loads in hours, the largest over several days, and continues by itself after a pause.

    While loading you see the progress per object type. A large organisation's data arrives in batches, and each batch is usable straight away.

    Registered objects only; what the BRO has deregistered, Sophea does not load. What one user loads is ready for the next.

    Which BRO data

  3. Step 03 · Ask

    Ask your question

    Ask your question in plain language, as you would ask a colleague. Sophea answers with text, tables, charts, maps and well diagrams, and shows the wells the answer is about on the map beside the chat.

    Sophea names the well and its BRO id in its answers, and keeps provisional and approved values apart. Always check the source yourself. Every answer is marked as AI-generated.

    For example:

    • Which wells have the highest winter levels?
    • How does this summer's lowest level compare with the ten-year average?
    • Which wells in this area belong to which monitoring network?

    The judgement stays with the hydrologist.

    ?
    The judgement stays with the hydrologist.

  4. Step 04 · Model

    Model and judge

    Time-series models with Pastas on the groundwater levels in the BRO, with precipitation and evaporation from the KNMI (the Royal Netherlands Meteorological Institute).

    Basic judges the model in plain words: one verdict, our checks at a glance, and what to do when something is off. When the model looks ahead, that is a model estimate for dry, average and wet weather, only as reliable as the model itself.

    The judgement stays with the hydrologist.

    More on time-series analysis

Pastas is named descriptively. Pastas is open-source software by its own authors; Dawaco is not affiliated with the Pastas project.

Private and shared

What is yours, and what is shared

Your areas are private. The BRO data itself is public and shared: what one user loads is ready for the next.

Your models are yours: nobody else in the workspace sees them.

Trust and security

Limits

What Sophea does not do

Sophea only reads: it never changes, registers or delivers BRO data. You deliver and correct with Dawaco Phrea™.

In Sophea: GMW, GLD, GAR, GMN, FRD and BHR-GT by default; CPT, GUF and GPD as options. Not in Sophea: BHR-P, BHR-G, REGIS and GeoTOP, and the other BRO registration objects. What the codes mean.

Look at the BRO data for your area

Access to Sophea is by invitation: Dawaco sets up each organisation and its users.