Preparing a workplan

Goal: find the best location for a new borehole around the existing borehole Ormeliai (-2.157667°, 37.162472°).

Today: Desk preparations.Tomorrow: Field work.

Software and information

Make sure everyone has installed

On laptop computers:• Google Earth (http://earth.google.com)• Schlumberger

Available information:• Hydrogeological/geophysical survey report Ormeliai• Borehole completion report with driller’s log

(Kenneth)• Topographic map (digital)• Geological map (digital)

What can we expect in the field?

TopographyWhere is the site located (-2.157667°, 37.162472°)?How does the area look like?Are there any nearby landscape features that might be of interest (rivers, hills, etc.)?What can we learn from the elevation and elevation profiles?

What can we expect in the field?

GeologyWhat kind of geology can we expect (at the surface and deeper)?How are the different types of geology related to each other?What’s the potential for finding water in this geology?What does this say about the expected potential for boreholes?

What can we expect in the field?

HydrologyAre there any nearby boreholes?What can we learn from them?What kind of water quality can we expect?At which depth do we expect to find water?

What can we expect in the field?

MeasurementsWhich method(s) are most suitable for this area?What kind of information do we hope to learn from them?What kind of measurement results do we expect?Where should we measure?In which orientation should we measure?

Questions

What is the aquifer?How thick are the volcanics?Is it possible to have more than 1 borehole? Do they influence each other.How did they select this site? Is there a better site?Why does recharge reduce in time?Look at the technical installation (capacity of the pump)

What is the quality of the water?What influences this?How do the boreholes compare? (yield, quality, etc)At what level do we find water?Vulnerability of the boreholeSustainability of boreholeOther water harvesting technologies?

Prepare a workplan for tomorrow:• Which sites do you want to visit?• What do you want to see/hear/learn?• What do you want to measure and where?• How do want to measure this?• What do you expect to find?• Make a sketch map of the area with the

locations you want to visit.• Make a sketch profile of the hydrogeology.

Preparing a workplan

Prepare a workplan for tomorrow:• Which sites do you want to visit?• What do you want to see/hear/learn?• What do you want to measure and where?• How do want to measure this?• What do you expect to find?• Make a sketch map of the area with the locations

you want to visit.• Make a sketch profile of the hydrogeology.

Digital reporting• Make sure to determine the locations of all sites

where you have carried out measurements or have collected information.

• During the week: log all these locations in a Google Earth file.

• At the end of the week: email this Google Earth file to me.

Software and information

Make sure everyone has installed

On smartphone:• Distance and area measurement• GPS Status & Toolbox• GPS Essentials