ANSDIMAT includes several modules that allow to solve everyday hydrogeologist problems effectively

Aquifer Test Analysis

Module AnsTest: aquifer tests analysis by manual and automatic curve-matching methods. Pumping tests, recovery tests, slug test, stream-aquifer interaction test.

Wellfield design & impact

Module AmWells: analytical modelling of groundwater wells and well systems, well drawdown prediction. Maps of piezometric heads and cross-sections.

Mine Inflows and Dewatering

Module AnsPit: solutions for estimating the groundwater inflow rate to a mine pit, drainage system planning. Open pit dewatering, predict groundwater inflow.

Capture Zones Delineation (WHPA)

Module AnsTrack: particle tracking to determine groundwater flow paths, movement of contaminants, to delineate the capture zone of a pumping well.

Numerical Modelling of Radial Flow

Module AnsRadial: finite-difference 2-D axi-simmetric groundwater flow models to simulate aquifer tests in complex hydrogeological conditions.

Pumping Test Planning

Module AnsQuick: application for aquifer test planning and drawdown prediction. Hydrogeology units and parameters converter. Special function calculator.


ANSDIMAT provides analytical solution to interpret borehole test results and determine the hydraulic properties of the aquifer. It offers solutions for confined, unconfined and leaky aquifers, takes into account partial penetration, barriers, recharge and bore storage. ANSDIMAT also provides solutions for horizontal heterogeneous aquifers, inclined aquifers,multiple boreholes in a field and mine dewatering options. Finally, ANSDIMAT can determine the extension of a catchment or the extension of the source protection zones (SPZ, UK)* around a borehole or a borefield.

ANSDIMAT can be used to:
- estimate sustainable borehole yield and optimise production pumping;
- assess environmental issues when understanding the dynamics of the aquifer is required to evaluate the distribution of a contaminant in the subsurface;
- evaluate the requirements for dewatering around mining and construction sites.

ANSDIMAT is to be used by hydrogeologists and hydrologists who have to interpret borehole test results. Software users must be familiar with analytical solutions and their range of application.

* Also called Safeguard zones (SGZ, Europe) or Wellhead Protection Areas (WHPA, USA)

Geography of our clients

For about 20 years the program works successfully in Russia and former Soviet Union countries. It is used in
- Engineering surveying in construction,
- Nuclear power facilities,
- Mineral deposits,
- The assessment of groundwater for environmental studies.

Today ANSDIMAT is applied by more than 500 users to solve groundwater-related problems in construction, water supply and mining industries. Most of our clients work in Russia and the countries of former USSR. Recently our program also got known in some other countries, such as Australia, Germany and Mongolia.

Aquifer Test Solutions. A Practitioner’s Guide with Algorithms Using ANSDIMAT by Sindalovskiy Leonid. Springer, 2017

Sindalovskiy. Aquifer test solution

This book, designed as a handbook, provides a systematic treatment of analytical solutions describing groundwater flow during aquifer tests. The book integrates the majority of known solutions from well hydraulics and subsurface flow theory, starting with pioneering work from the early 20th century up to the most recent publications in scientific journals. The book includes about 300 transient solutions covering a wide range of aquifer test scenarios and hydrogeological conditions. All the solutions have been thoroughly tested and implemented in the multifunctional ANSDIMAT software. The book comprises three parts and is supplemented by appendices.

The first part of the book is dedicated to basic analytical relationships referring to pumping tests with constant discharge rate. Conceptual models describe confined, unconfined, confined–unconfined, inhomogeneous, and fracture-porous aquifers, as well as leaky aquifers and multi-layer aquifer systems. Complicating factors such as flow boundaries, aquifer anisotropy, non-uniform aquifer thickness, partial well penetration, wellbore storage and skin, the effect of capillary forces are also considered.

The second part focuses on complex pumping test settings and well system configurations. Analytical solutions are presented for pumping from a horizontal or inclined well, constant-head tests, multi-well variable-discharge tests, simultaneous pumping from adjacent aquifers and dipole flow tests. Detailed descriptions are given for slug and recovery tests.

The third part of the book contains algorithms for evaluating hydraulic characteristics using analytical and graphical methods, and is supplemented by the ANSDIMAT tool. This software includes solutions for some practical engineering-hydrogeological problems, in particular, the assessment of aquifer characteristics by data on groundwater level monitoring and the evaluation of water inflow into open pits.
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