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| Glossary ยป G |
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GlossaryThis glossary is copied from the Stormwater Manual of Western Australia Chapter 11: Further Information. References are available from this chapter. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z GGeomorphology: Of, or relating to, the forms of the earth’s surface and the processes associated with them (e.g. erosion, weathering, transport and deposition) (Water and Rivers Commission 2002). Geotextile: A thin, flexible permeable sheet of synthetic material used to allow the transmission of water through the pores of the material, while preventing the transmission of soil particles (ARMCANZ & ANZECC 2000). Goals or aims: General descriptions of what a project will achieve (Woodhill & Robins 1998). Grain size distribution: The statistical distribution of grain (by weight) passing a range of sieve sizes (ARMCANZ & ANZECC 2000). Gravel: A mixture of coarse mineral particles larger than 2 mm, but less than 75 mm in equivalent diameter (Charman & Murphy 1991). Greenfield: Land zoned for urban development and located on the fringe of an urban area (Western Australian Planning Commission 2004). Gross pollutant traps (GPTs): A type of litter and sediment management system. GPTs typically consist of a sediment trap with a weir and trash rack at the downstream end of a piped drainage system. Groundwater: Water found under the land surface that occupies pores and crevices of soil and rock (Water and Rivers Commission 2000a). Gully pit/inlet pit/side entry pit: A roadside inlet pit designed to collect stormwater runoff from paved surfaces and to intercept sediment and litter prior to entry into the drainage network (ARMCANZ & ANZECC 2000). |
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