waste heat from industrial and power generation processes flowing water (rivers and streams) still water (ponds, lakes and wetlands) small body of freshwater, with no stream draining it - often fed by an underground spring larger body of freshwater, usually drained by a stream

1. Thermal Pollution

waste heat from industrial and power generation processes

2. Lotic Ecosystems

flowing water (rivers and streams)

3. Lentic Ecosystems

still water (ponds, lakes and wetlands)

4. Ponds

small body of freshwater, with no stream draining it - often fed by an underground spring

5. Lakes

larger body of freshwater, usually drained by a stream. May be naturally occuring or man made

6. Wetlands

region of land that holds a great deal of water for significant periods of time, and that contains specialized plants able to grow in these wet conditions

7. Streams

bodies of moving water, contained within a bank (sides) and bed (bottom)

8. Rivers

natural streams of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels

9. Estuary

areas of water and shoreline where a freshwater steam or river merges with the ocean

10. Water %'s

97% - salt water in ocean
3% - freshwater
>2% frozen in ice caps
> 1% usable by organisms as liquid water or water vapor