Well,

Hydrogeological system represents the regional geological, structural and the hydrological basin( obtaining aquifers, aquitards, aquicludes and aquifuges) including one or more than aquifer system( may be confined, unconfined and/or semi confined).

regards

Great information and example by Dr. Hussien. The aquifer is a physical feature containing underground water, and when confined and important, is sometimes named, as the Floridan or Ogallala aquifer. Hydrogeology is study of groundwater movement, such as within an aquifer. It would include the source areas or recharge zones that contribute, so a coastal confined aquifer might have source contributions or distant connectivity to streams, lakes or even mountains. The term system applied to either brings in all the connectivity that contributes to a physical feature (as aquifer) or the overall subject of groundwater movement (hydrogeology) including interconnections or in some cases boundaries of underground physical features (soils, geology, etc.). A hydrogeologist among other things, studies or captures data on groundwater, its sources, water table variability, substrates, hydraulic head and conductivity, movement, etc., and may help define the geological and groundwater features involved.

Hello!

A general description of an “Aquifer system” may be found on page 2 (PDF page 7 of 14) of the following USGS document:

Glossary of Selected Terms Useful in the Studies of the Mechanics of Aquifer Systems and Land Subsidence due to Fluid Withdrawal

(POLAND et al., 1972)

https://pubs.usgs.gov/wsp/2025/report.pdf

A Hydrogeologic System can be described as an aquifer system (POLAND et al., 1972) that also takes into account hydraulic properties and groundwater flow between topographical boundaries such as the system’s areas of groundwater recharge (e. g., Mountains) and points of groundwater discharge (e. g., Springs, Rivers, Water-râble or Artesian Wells) within a specific geographic region of study.

Hydraulic properties of an Aquifer or groundwater system are discussed in the following USGS document:

Basic Ground-Water Hydrology

(HEATH, 1983)

https://pubs.er.usgs.gov/djvu/WSP/wsp_2220.pdf

Dear RG contributors

Many thanks for the answers and materials;

Bayan Hussien thanks for the excellent and didactic figures as well as their concepts. I was able to understand the difference between concepts through their textual explanation. Thankful!

C. Mei-Ling Hamilton Thanks for the links from the Clasics Heath (1983) Poland (1972), I have not had contact with this glossary yet.

William F. Hansen Thank you for taking the time and sharing some of the most important hydrogeological concepts.

Hydrological systems is total hydrological cycle connected with earth, atmosphere and covers all stages like rain, water vapour and ice

Aquifer system is only ground water consists vadose zone, saturated zone and water table

Nagalakshmi Radhakrishnan

Can this contamination be reversed or should it be thawed?

Regards!

The hydrogeological system corresponds to all feeding, circulation-storage and emergence areas, whereas an aquifer system includes only the circulation-storage area...

Best regards,

Dear Dr. Jean-Pierre Faillat

What is the source: author and year of this quote?

Thank you in advance.

Regards!

Many regards aquifers (or water bodies in the EU) as groundwater holding entities of some interest, such as for water supply, and others. Hydrogeology is related to all groundwater and soil water occurence and movement.

Dear Leônidas,

The 'Hydrogeological System' is a neologism in relation to the 'Hydrological System', which is widely used for surface water, but also quite often for groundwater. 'Hydrogeological system' is finally an adaptation to a frankly hydrogeological context. I use this expression for a few years. I do not know what the source is, sorry.

Sincerely, Jean-Pierre

Dear Dr Ketil Haarstad and Dr Jean-Pierre Faillat

Dr Bayan Hussien Can reach the response of difference between the hydrogeological system and the aquifer system. I recommend reading and any criticisms or advances on this placement.

Best Regards!

Well,

hydrogeological system simply means regional hydrogeologic basin including recharge, transition and discharge zone, while aquifer system is a part of the hydrogeologic system. see the attached links.

Regards

Article Preferable Districts for Groundwater Exploitation Based on H...

Article Determination of Lateral Hydraulic Connection of the Regiona...

Thanks Dr Bayan Hussien

Very importants contribuitions.

Best Regards!

This questioning is reaching its goal, bringing together all the continent surrounding the conceptual problem surrounding the groundwater.

Thanks to all who have contributed.

Best Regards!

Aquifer system is a part of Hydro geological system.

Following attached file may be helpful for you.

Very good material!

Thank you Md. Saiful Islam

Regards

Excellent and Impressive article best wishes

I appreciate Dr Bayan Hussien for his excellent explanations regarding this discussion.

Please Ref: Hydro geological system and Aquifer system, James A Miller

Hydrogeological system represents the regional geological, structural and the hydrological basin( obtaining aquifers, aquitards, aquicludes and aquifuges) including one or more than aquifer system( may be confined, unconfined and/or semi confined).

An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt). Groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.