11. The compressed air is stored in an underground reservoir . 12. They are mainly located in areas that cannot accommodate underground reservoirs due to space restrictions. 13. A drinking water underground reservoir with pressure valves and related capabilities is beneath the summit. 14. Underground reservoirs and gas outlets were inundated, causing shortages of clean water and cooking fuel.15. The four underground reservoirs have unique fire-fighting arrangements with a capacity of 10, 000 gallons. 16. The Urquhart shaft had hit an underground reservoir and was never continued to the planned depth. 17. The Cistern Basilica, an underground reservoir supported by ornate columns from the Byzantine era, was undamaged. 18. The aquifer is an underground reservoir that provides water for San Antonio and several Central Texas counties. 19. It is unclear whether a more effective method of replenishing underground reservoirs can be developed by then. 20. We know where the underground reservoirs are.
