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| :An area of land that drains into a river or a lake. The boundary of a watershed is based on the elevation (natural contours) of a landscape. | | :An area of land that drains into a river or a lake. The boundary of a watershed is based on the elevation (natural contours) of a landscape. |
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| | ;Clay |
| Clay (SOILS)
| | ;clay |
| 1. A mineral soil separate consisting of particles less than 0.002 millimeter in equivalent diameter. 2. A soil texture class. 3. (Engineering) A fine-grained soil (more than 50 percent passing the No. 200 Sieve) that has a high plasticity index in relation to the liquid limit. (Unified Soil Classification System). | | 1. A mineral soil separate consisting of particles less than 0.002 millimeter in equivalent diameter. 2. A soil texture class. 3. (Engineering) A fine-grained soil (more than 50 percent passing the No. 200 Sieve) that has a high plasticity index in relation to the liquid limit. (Unified Soil Classification System). |
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| ;Combined Sewer | | ;Combined Sewer |
| | ;combined sewer |
| :A wastewater collection system, which conveys sanitary wastewater (domestic, commercial and industrial wastewaters) and Stormwater runoff through a single-pipe system to a treatment works. | | :A wastewater collection system, which conveys sanitary wastewater (domestic, commercial and industrial wastewaters) and Stormwater runoff through a single-pipe system to a treatment works. |
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| ;Combined sewer overflow | | ;Combined sewer overflow |
| ;combined sewer overflow | | ;combined sewer overflow |
| :A discharge to the environment from a Combined Sewer system that occurs because of a precipitation event when the capacity of the interceptor sewer or treatment plant is exceeded. It consists of a mixture of sanitary wastewater and Stormwater runoff. | | :A discharge to the environment from a combined Sewer system that occurs because of a precipitation event when the capacity of the interceptor sewer or treatment plant is exceeded. It consists of a mixture of sanitary wastewater and Stormwater runoff. |
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| ;Conveyance | | ;Conveyance |
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| ;Groundwater | | ;Groundwater |
| ;groudnwater | | ;groundwater |
| :The water below the surface, and typically below the groundwater table. | | :The water below the surface, and typically below the groundwater table. |
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| ;water table | | ;water table |
| ;Water table | | ;Water table |
| The upper surface of the zone of saturation, except where the surface is formed by an impermeable body. | | :The upper surface of the zone of saturation, except where the surface is formed by an impermeable body. |
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| ;Headwater | | ;Headwater |
| ;headwater | | ;headwater |
| Referring to the source of a stream or river. | | :Referring to the source of a stream or river. |
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| ;Treatment train | | ;Treatment train |
| ;treatment train | | ;treatment train |
| Stormwater management following the hierarchical approach: Source Control measures, Conveyance Control measure and End of Pipe treatment to achieve the water quality and water balance target for lot level development of the preferred strategy. | | :Stormwater management following the hierarchical approach: Source Control measures, Conveyance Control measure and End of Pipe treatment to achieve the water quality and water balance target for lot level development of the preferred strategy. |
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| ;Hydrologic cycle | | ;Hydrologic cycle |