Analysis
Analysis of the BRO data in your area
GHG, GLG and GVG, ranking, gaps in records, well construction and borehole logs. The calculation rule is named. Charts with every tube of a well together, and the well construction with screen positions and ground level.
Sophea runs its calculations on the public data of the Dutch Key Register of the Subsurface (BRO) in the area you choose. GHG, GLG and GVG, together GxG, are the standard Dutch groundwater statistics: the mean highest, mean lowest and mean spring groundwater level.
Questions
Ask as you would ask a colleague
Ask your question in plain language, as you would ask a colleague.
Sophea answers with text, tables, charts, maps and well diagrams. You see the wells the answer is about on the map beside the chat.
For example:
- How many wells, level series and analyses are in this area?
- Which wells have the highest winter levels?
- Calculate the GHG, GLG and GVG of every tube in this area since 2010.
- How does this summer's lowest level compare with the ten-year average?
- Are these levels provisional or approved?
- Which wells have the longest gap in their record?
- Show the construction of this well.
- Which wells in this area belong to which monitoring network?
The judgement stays with the hydrologist.
What Sophea computes and draws for you
On the BRO data for the area you choose, with the source next to the answer.
Groundwater statistics
Groundwater statistics per tube, including GHG, GLG and GVG, naming the calculation rule used, and comparison with a reference period.
Ranking and comparing
Compare and rank wells: highest winter level, largest decline, longest gap in the record.
The inventory of your area
How many wells, level series, analyses and boreholes lie in your area, and which wells belong to which network.
Well construction and borehole log
Well construction, screen positions and the log of a borehole in the answer.
Answers on the map
Sophea shows the wells the answer is about on the map beside the chat.
Provisional and approved apart
Groundwater levels per tube, with each value's quality status: provisional and approved stay apart.
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.
Well construction
Well construction at a glance
Sophea draws the well construction from the BRO: the tubes of the well and the depth of each screen. The well window also gives the ground level, in m NAP (the Dutch ordnance datum).
On the Borehole tab you see the nearest geotechnical borehole within 500 metres, with its layers, clearly marked as not formally linked to the well.
Ask for it in the chat, and the well construction and borehole log appear in the answer.
Sources and limits
Honest about what the BRO does and does not record
Sophea names the well and its BRO id in its answers, and keeps provisional and approved values apart. Always check the source yourself.
When data is missing, Sophea says so and does not fill the gap itself.
Ask for the head difference between two tubes, and Sophea explains that the BRO does not record which aquifer each screen is in, and offers what it can do instead.
Every answer is marked as AI-generated.
From day one, a second check reads the answer against the data it retrieved and flags a possible error.
The judgement stays with the hydrologist.
Checklist
What to expect from BRO analysis
Eight points to test Sophea against. We show them in a demo for your own area.
- Choose one area; Sophea loads the BRO objects in it, with the object types you tickA circle, a municipality, your own shape or a shapefile.
- Calculations across the whole area, without downloads or scriptsGHG, GLG and GVG, rankings and gaps in records.
- Provisional and approved values kept apartThe quality status from the BRO for every value.
- Names the well and its BRO id in its answersWith the well code and the BRO id, so you can check the source.
- Missing data named, never filled inWhen something is not in the BRO, Sophea says so.
- Time-series models, no coding neededPastas on BRO levels, with KNMI precipitation and evaporation.
- Read-only: nothing ever delivered to the BROYou deliver and correct in Dawaco Phrea™.
- One fixed price a year, the AI assistant includedFour packages, launch prices, excl. VAT.
FAQ
Questions about analysis
Can I trust an AI with hydrological questions?
Sophea runs its calculations on the BRO data for your area, shows the chart or the map and names the source. When something is missing, it says so. The judgement stays with you.
How many questions can I ask?
That depends on your questions, which is why we do not name a fixed number of questions per package. At 80% of the yearly budget you get a warning, and in the demo we look together at which package suits the questions you want to ask.
May staff pass an answer from Sophea on to a member of the public?
Only after checking it themselves. Sophea is a support tool for staff; every answer is marked as AI-generated and the judgement stays with you.
Ask your first question about your own area
Access to Sophea is by invitation: Dawaco sets up each organisation and its users.