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Across 2. a flow of groundwater that emerges naturally at the ground surface. 4. the slope of a stream over a certain distance. 8. the volume of open spaces in rock or soil. 10. the land area that contributes water to a stream. 13. an opening bored into the zone of saturation 14. an elevated landform that parallels a stram and acts to confine its waters, except during floodstage. 15. water underground in the zone of saturation. 16. the movement of surface water into rock or soil through cracks and pore spaces. 20. zone where all open spaces in sediment and rock are completely filled with water. 22. sediment that is carried by a stream along the bottom of its channel. 24. a looplike bend in the course of a stream. 25. the total amount of sediment a stream is able to transport. 27. the upper level of the saturated zone of groundwater. 28. a depression produced in a region where soluble rock has been removed by groundwater. 29. rock or soil through which groundwater moves easily. 30. the flat, low lying portion of a stream valley subject to periodic flooding.

Down 1. a naturally formed underground chamber or series of chambers most commonly produced bu solution activity in limestone. 3. a measure of a materials ability to transmit fluids. 5. the passage of gases through fine tubes because of differences in pressure or temperature. 6. a stream that empties itself into another stream. 7. a form of limestone that is deposited by hot springs or as a cave deposit. 9. an area that has a land surface or topography with numerous depressions called sinkholes. 11. a well in which the water naturally rises above the level of the water table. 12. a hot spring or fountain that ejects water at various intervals. 17. the constant movement of water among the oceans, the atmosphere, geosphere, and the biosphere. 18. the course that the water in a stream follows. 19. an imaginary line that separates the drainage of two streams; often found along a ringe 21. occurs when the discharge of a stream becomes so great that it exceeds the carrying capacity of its channel and overflows its banks. 23. the quantitiy of water in a stream that passes a given point in a period of time. 26. an accumulation of sediment formed where a stream enters a lake or an ocean.