1. Dave Watkins BSc 3 AG, EGG, EST, CZEM MSc Geotechnical Engineering
Hydrogeology
Dave Watkins
BSc 3 AG, EGG, EST, CZEM
MSc Geotechnical Engineering

2. Hydrogeology – Lecture 1 INTRODUCTION
1.1 Schedule for the course
1.2 What is hydrogeology?
1.3 Why study hydrogeology
2 The hydrological cycle and its interactions
3 Types of aquifer
3.1 Confined
3.2 Unconfined
3.3 Leaky

3. Schedule for the course

4. What is Hydrogeology ?
Hydrology – The study of water in the environment
Hydrogeology – The study of underground water

5. What is an aquifer ?
An aquifer is a soil or rock unit that can store and transmit significant quantities of groundwater.

6. Store water Transmit Significant Groundwater
There must be porosity to provide space for storage
Transmit
The pores must be interconnected to allow the water to flow continuously between the pores. Permeability.
Significant
The quantity that may be significant for one application may not be significant for another.
Groundwater
Is the water held and transmitted by the saturated part of the aquifer.

7. A journey around the hydrological cycle

8. Reasons for studying Hydrogeology

9. Hydrogeology is an interdisciplinary subject
Involving
Geology
Hydrology
Chemistry
Mathematics
Physics
Computing
Engineering
Agriculture
To answer questions posed by
Engineers
Planners
Ecologists
Managers
Etc.

10. Groundwater is: A precious resource A cause of engineering problems
but sustainable if properly managed, in terms of quantity and quality
A cause of engineering problems
Ground stability, drainage and dewatering
An active part of the environment
Linking elements of the hydrological cycle

11. How rivers flow video

12. Basic hydrogeological terms and definitions that you need to know

13. Related to aquifers Unconfined aquifer (phreatic)
Confined aquifer (piezometric)
Leaky aquifer (semi-confined)
Perched aquifer
Aquitard
Aquiclude

14. Related to flow Hydraulic head Hydraulic gradient
Hydraulic conductivity
Specific discharge
Aquifer flow
Intrinsic permeability
Transmissivity

15. Related to storage Specific retention Specific yield
Elastic storativity

16. Related to wells Specific drawdown Specific capacity Well efficiency
Source protection zones

17. Types of Aquifer Unconfined – Phreatic Confined – Piezometric
Leaky – Semi-confined/unconfined
Refer to handouts