Aquifer Basin
Management
Information System
HydroGeoSenZ tells you what the water is doing. ABMIS tells you what the aquifer is — how much it holds, how lawfully it yields, and how much may be taken. A resource figure is not a number. It is an instrument.
A water level is an
observation.
A resource
figure is an instrument.
A hydraulic head reading describes a moment at a point. A resource estimate decides whether a block may sanction new borewells, whether a scheme is funded, and what the state reports to the Ministry. The distance between the two is hydrogeology and it is where the most groundwater information systems stop.
ABMIS is built for that distance. It holds the aquifer’s physical description alongside the observation record, applies the national estimation methodology to both, and produces the categorisation and the workings behind it in the same operation.
"Estimation you can defend line by line, because the arithmetic never leaves the system"
Everything the assessment
needs, held in one place
Aquifer parameters, assessment units and resource estimates are organised around the same governed record, so the assessment remains traceable.
01 Basin and sub-basin register
A structured register of the aquifer framework, including basin, sub-basin and assessment units.
02 Hydrogeologic configuration
The geological and hydrogeological framework needed to understand how groundwater moves through the system.
03 Aquifer parameter register
Store and manage aquifer parameters derived from field investigations and pumping-test interpretation.
04 Lithology and aquifer units
Capture lithological information and connect it to the aquifer framework used throughout the assessment.
The field test worked through to a stored parameter
Drawdown and recovery observation are entered against the test well, fitted using the standard analytical methods, and the derived parameter are written back into the aquifer register with the curve, the assumptions and the analyst’s name attached.
The result is that transmissivity in a resource calculation is never an orphan number. Every officer downstream can open the test it came from.
Theis
Non-equilibrium type-curve matching for confined aquifers under constant discharge.
Cooper-Jacob
Straight-line approximation on semi-log axes for time-drawdown and distance drawdown data.
Theis recovery
Residual drawdown after pumping stops as an independent check on the pumping-phase result.
Store, not printed
Parameter flow into the station and aquifer masters, where the estimation modules read them.
Two methods, kept apart on purpose
The water table fluctuation method and the rainfall infiltration method answer the same question from different evidence. ABMIS runs each as its own computation, with its own inputs, so the two can be compared rather than blended.
Water table fluctuation
Recharge = Sy x Δh x Area
Aquifer storage change computed from the observed seasonal rise, the specific yield of the formation and the contribution area. Reads Δh directly fromt he the approved hydraulic head record.
Rainfall infiltration
Recharge = Rainfall x RIF x Permeable area
Recharge from precipitation using the infiltration factor for the formation and the permeable of the unit. Specific yield plays no part in this computation and is never allowed into it.
Both are driven by interactive parameters specific yield, rainfall contribution and area contribution with the basin volume recomputing live in million cubic metres as the officer adjusts them, and a sub-basin breakdown showing where the volume comes from. Unit conversion between MCM, hectare-metres and BCM is handled by the system, not by the officer.
The category and the arithmetic that produced it
| Category | Stage of Extraction | What It Means for the Unit |
|---|---|---|
|
Safe
|
≤ 70% | Comparatively lower development pressure. |
|
Semi-Critical
|
> 70% to ≤ 90% | Increasing development pressure. |
|
Critical
|
> 90% to ≤ 100% | Approaching the assessed extractable resource. |
|
Over-Exploited
|
> 100% | Extraction exceeds the extractable resource. |
|
Saline
|
— | Separate designation, outside the extraction sequence. |
Where ABMIS earns its place
01
Annual resource assessment
Compute groundwater resource availability and extraction-stage categories using a consistent methodology.
02
Aquifer characterization
Bring aquifer geometry, parameters and supporting evidence into one governed framework.
03
Assessment reporting
Generate assessment outputs and reports directly from the approved data.
04
Recharge scheme planning
Use resource and aquifer information to support groundwater recharge and intervention planning.
05
Inter-agency comparison
Maintain consistent assessment information across departments, regions and assessment units.
06
Assessment analytics
Explore resource trends, groundwater conditions and assessment outputs without rebuilding calculations externally.
The assessment computed where the data already lives
Ask for a walk through of the assessment framework using your state’s own methodology and aquifer units.
Transforming Data into Actionable Insights
Company
Legal
Contact
-
Nextent Labs Private Limited
Second Floor, No.61, Samayapuram 2nd Street,
Karambakkam, Porur, Chennai – 600 116 - samuel@nextentlabs.com