| P number: | P001434 |
|---|---|
| Old photograph number: | Z00015 |
| Caption: | Adjacent to the A70 road near Tarbrax, Strathclyde Region. A V-notch tank in use during a pumping test on an exploratory groundwater borehole. |
| Description: | The borehole was drilled by West of Scotland Water as an exercise to see whether groundwater could be used to supply the village of Tarbrax, and replace an unreliable surface stream source. The borehole, drilled into Upper Devonian sandstone and mudstone, yielded over 7 litres/second. The V-notch tank is used to measure the water flow, by comparing the height of water flowing over the V with flow rates in a reference table. The drill rig in the background was used to drill the borehole and install the electric pump to 50 m. depth. |
| Date taken: | Wed Jan 01 00:00:00 GMT 1997 |
| Photographer: | Ball, D.F. |
| Copyright statement: | NERC |
| X longitude/easting: | 304280 |
| Y latitude/northing: | 654490 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Portrait |
| Size: | 195.85 KB; 659 x 1000 pixels; 56 x 85 mm (print at 300 DPI); 174 x 265 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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