Forensic Asset Hydrogeology
Why is the water here — and who is liable?
Soil studies stop at classification. Groundwater studies start at the aquifer. GDM builds the layer in between — turning the soil data you already have into defensible recharge and migration answers.
The Gap
Two studies. One site. No connection.
On most GCC projects the soil assessment (C1) and the hydrogeology assessment (C2) are separate scopes by separate parties. C1 classifies the soil and stops. C2 needs the hydraulic behaviour of that same soil — but isn't permitted to re-derive it. The result: risk that no one is accountable for.
Classifies the top 2 m
Texture, density, USDA / EAD class, salinity. Measured — then filed as a descriptive endpoint.
2 m → water table
C1 stops above it. C2 starts below it. Drillers only pass through it. The zone irrigation water actually travels through is owned by no one.
Needs hydraulic parameters
Infiltration, recharge, contaminant migration — but resorts to textbook assumptions instead of the site's own measured soil.
GDM doesn't tell either party they're wrong. We connect the data they already produced — and the gap closes itself.
The Method
A chain of published, defensible standards
Every step is a recognised method, and every output traces back to a lab report. That is what makes the result hold up — in a regulator's hands or a courtroom.
EAD 2009 — authoritative class
We query the Environment Agency – Abu Dhabi soil survey at the exact coordinate. The regional map defines the soil; nothing is assumed.
C1 lab — measured soils
Particle size and density from the soil report establish the actual texture for the top 2 m — confirming or refining the EAD class.
Rosetta — hydraulic parameters
A published pedotransfer model converts texture + density into van Genuchten parameters (θr, θs, α, n, Ksat), cross-checked against measured porosity.
Driller logs — extend downward
Where borehole logs exist, the 2 m overlap calibrates a defensible translation that extends the soils to the water table — every layer flagged by confidence.
VZAA — recharge & migration
A non-iterative vadose-zone model returns recharge, travel time and the path of irrigation water toward the aquifer.
Why GDM
Market leadership is connecting what others leave separate
Forensic defensibility
Every hydraulic parameter traces to a specific lab report, method and depth. Reproducible from archived inputs — built for regulators and disputes.
Authoritative first
We start from the EAD 2009 survey, the official classification, then refine with site lab data. Not textbook guesses.
Honest by design
Measured, calibrated, and assumed values are flagged separately. Where the data runs out, the report says so.
The connective layer
We are the hydrogeology that sits between the soil and groundwater studies — the scope no one else owns.
Engage
Send us your soils report. Get a first-pass back.
The live tool gives a 30-second preview. A GDM assessment connects it to liability, compliance and the full vadose profile. Start the conversation.
- • EAD-authoritative classification at your site
- • Lab-derived hydraulic parameters with cross-check
- • Recharge & migration assessment to the water table