Water rinfall  
Conservation rose  

los Angeles Riverriver

We have a water use policy; by relying on water consumption, we have yet to develop the ethical imagination to foster water conservation.

The capacity of water to be used over and again to meet a variety of human and ecosystem needs is a core focus of conservation. As a potentially renewable resource, surface water is today managed in order to protect watersheds, municipal, agricultural, wildlife and fisheries, or recreational uses for the good of all members of a region. Conservation of water, rivers, streams and underground sources of water is a balancing act that begins with understanding the value of water to civilizations.

See: Chicago Wilderness.

The water consumption of energy production: an international comparison


River and surrounding watershed in arid Spain.

World Map



The rate at which water is reused when compared to the available water from rain, snow, or capture (in reservoirs and aquifers) largely determines the extent to which water is a renewable resource.

In some places on earth, and especially the western United States water is not as "renewable" as it is in most of Canada or the belt of tropical rain forests.

See: Living Machines and John Todd.

Water consumption for energy production: an international comparison a bar chart

Water use for energy



Flowing water divides the land into interdependent regions based on where the water flows from and into a delineated catchments or drainage basins, called a watershed.

Watershed map of the United States

American rivers:


Ritual behavior:

500 billion cups of coffee every year are consumed.

Generating electricity requires water unless the source is wind or solar energy.


The house as a water trap.

The house is actually a water conveyor, shunting H2O from place to place.


So it makes sense to reuse, that is to recycle the rain.




The upper Yangtze River at Leaping Tiger GorgeŠthis is world's the most heavily populated river valley.


forests depend on:

President Theodore Roosevelt's 1908 speech, "Conservation as a National Duty," Washington, D.C.

Lake Tahoe | Lake as Microcosm | Lake Apopka