Hydrogeology – area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth’s crust (commonly in aquifers)
Reasons for carrying out the survey
The hydrogeological assessment typically comprises of (but is not limited to) the following tasks:
Ascertain the requirements of the client, location, yield and use
Hydrogeology, implications of the geology in terms of water bearing horizons, anticipated yield, hydraulic properties of each aquifer, groundwater flow direction, pathways and rates of flow.
Boreholes and abstractions in the catchment and region, including borehole logs and aquifer parameters (where known)
Catchment risk assessment, and risks to yield and quality, including the potential for planned activities to result in groundwater contamination and known or expected presence, distribution, concentration and risk from existing contamination.
Anticipated yield and quality of abstracted water
Borehole design and recommendations
Setting up for a hydrogeological survey
Terrameter used in hydrogeological survey
General survey report contents
Hydro
geological survey report is based on the findings observed while carrying out
survey, it contains the following:
Expected quantity of water and recommended drilling depth
Geology map showing point(s) location
Topographic map*
Line profile data and map*
Existing Borehole data analysis
Vertical Electrical Sounding results for the sites selected for drilling
Some information of interest to Client
An example of a geological map of a surveyed and recommended drilling point
Example of borehole design one
Example of borehole design two
Selected past borehole surveys
Find a few selected past hydrogeological (borehole) survey projects
1. Borehole survey in Nakivale -1
Purpose of the survey
Determine best drilling points for three production boreholes to provide water for community use
