gravel permeability
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Gravel — For other uses, see Gravel (disambiguation). Gravel (largest fragment in this photo is about 4 cm) … Wikipedia
river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… … Universalium
Aquifer — Typical aquifer cross section An aquifer is a wet underground layer of water bearing permeable rock or unconsolidated materials (gravel, sand, or silt) from which groundwater can be usefully extracted using a water well. The study of water flow… … Wikipedia
sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… … Universalium
Concrete — This article is about the construction material. For other uses, see Concrete (disambiguation). Outer view of the Roman Pantheon, still the largest unreinforced solid concrete dome.[1] … Wikipedia
Hydraulic conductivity — Hydraulic conductivity, symbolically represented as K, is a property of vascular plants, soil or rock, that describes the ease with which water can move through pore spaces or fractures. It depends on the intrinsic permeability of the material… … Wikipedia
Mound system — A mound system is an alternative to the traditional rural septic system leach field. The mound system is an engineered leaching field used in areas where septic systems are more prone to failure due to having extremely slow or extremely fast… … Wikipedia
Cul-de-sac — For other uses, see Cul de sac (disambiguation). Blind alley redirects here. For other uses, see Blind Alley (disambiguation). Dead End Street redirects here. For the song by The Kinks, see Dead End Street (song). A cul de sac in Sacramento,… … Wikipedia
Sedimentary rock — Middle Triassic marginal marine sequence of siltstones (below) and limestones (above), Virgin Formation, southwestern Utah, USA Sedimentary rock are types of rock that are formed by the deposition of material at the Earth s surface and within… … Wikipedia
Sand — For other uses, see Sand (disambiguation). Close up of sand from the Gobi Desert, Mongolia, showing a surface area of 1 square centimetres … Wikipedia
