How water is a good potential resource?

Question

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Answer 1

Hydrogeologic properties of the Neogene Hillsboro Formation and Willamette Silt in the Tualatin basin are evaluated to provide a foundation for future groundwater use in the Portland, Oregon, metropolitan area, and are then compared to hydrogeological conditions in the neighboring Portland basin. Catastrophic flood deposits of the Willamette Silt in the Tualatin Valley have low hydraulic conductivities and well yields below 7 gpm (26.5 lpm). Fluvial sand aquifers within the Hillsboro Formation compose only 20 percent of the 1,400-ft (450-m) thick unit and most contain a significant quantity of silt and clay, with hydraulic conductivities on the order of 2–30 ft/day (0.6–6 m/day). Water quality is good, yet low well yields (6–100 gpm; 23–380 lpm), a low hydraulic gradient within the basin, and geochemical data point to residence times of tens to hundreds of years and slow recharge to the system. A numerical simulation verifies slow groundwater velocities and the presence of local and regional flow regimes. Aquifers of the Hillsboro Formation are limited to domestic use, and model simulations of hypothetical well fields show that these aquifers would not support large-scale withdrawals. High-yield aquifers of the coarse-grained Troutdale Formation in the Portland basin contrast sharply with those of the Hillsboro Formation and Willamette Silt in that they can be separated into multiple hydrogeologic units, have high hydraulic conductivities, and can be used for municipal purposes. Such drastic differences in hydrogeologic characteristics within a metropolitan area require different strategies involving groundwater use or remediation

http://www.defra.gov.uk/Environment/wate...

Answer 2

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Answer 3

As a potential resource water is two-fold.

the first one as it is, water is needed for all life (without which thers is no life). Also it is used in all industrial activity as an ingredient as well as for many processes. It is used for Thermal Electricity generation which still happens to be the biggest component of power generation the world over. For this water is boiled to steam and its pressure is utilised to mechanically rotate turbines for creating power by electromagnetic machinery.

The other- water coupled with height over which it falls turns water turbines that have electromagnetic machinery on the same shaft, to generate power. This Hydel Power generation is geography specific; possible at heights. Potential of the water to generate power, measured in watts, is the product of water flow in liters per second, the head (height through which water falls on the turbine) and gravitational accelaration.

Precipitation (Rain) is the principal resource to compute the amount of water resource. Even if precipitation does not take place in an area, the same occuring at higher reaches of a river flowing through it can be considered a resource. A river passaging through a desert area like River Nile through Sudan & Egypt or River Indus (Sindhu) through Punjab & Sindh provinces are examples.