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18 relations: Aquifer, Aquifer test, Baseflow, Combined sewer, Discharge (hydrology), Drawdown (hydrology), Flood, Groundwater, Hydraulic head, Hydrogeology, Outfall, River regime, Routing (hydrology), Runoff model (reservoir), Sewerage, Snow, Surface runoff, Surface water.
Aquifer
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt).
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Aquifer test
An aquifer test (or a pumping test) is conducted to evaluate an aquifer by "stimulating" the aquifer through constant pumping, and observing the aquifer's "response" (drawdown) in observation wells.
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Baseflow
Baseflow is the portion of the streamflow that is sustained between precipitation events, fed to streams by delayed pathways.
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Combined sewer
A combined sewer is a sewage collection system of pipes and tunnels designed to also collect surface runoff.
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Discharge (hydrology)
In hydrology, discharge is the volumetric flow rate of water that is transported through a given cross-sectional area.
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Drawdown (hydrology)
In water-related science and engineering there are two similar but distinct definitions in use for drawdown.
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Flood
A flood is an overflow of water that submerges land that is usually dry.
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Groundwater
Groundwater is the water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations.
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Hydraulic head
Hydraulic head or piezometric head is a specific measurement of liquid pressure above a geodetic datum.
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Hydrogeology
Hydrogeology (hydro- meaning water, and -geology meaning the study of the Earth) is the area of geology that deals with the distribution and movement of groundwater in the soil and rocks of the Earth's crust (commonly in aquifers).
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Outfall
An outfall is the discharge point of a waste stream into a body of water; alternatively it may be the outlet of a river, drain or a sewer where it discharges into the sea, a lake or the like.
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River regime
River regime can describe one of two characteristics of a reach of an alluvial river.
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Routing (hydrology)
In hydrology, routing is a technique used to predict the changes in shape of a hydrograph as water moves through a river channel or a reservoir.
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Runoff model (reservoir)
A runoff model is a mathematical model describing the rainfall–runoff relations of a rainfall catchment area, drainage basin or watershed.
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Sewerage
Sewerage is the infrastructure that conveys sewage or surface runoff (stormwater, meltwater, rainwater) using sewers.
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Snow
Snow refers to forms of ice crystals that precipitate from the atmosphere (usually from clouds) and undergo changes on the Earth's surface.
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Surface runoff
Surface runoff (also known as overland flow) is the flow of water that occurs when excess stormwater, meltwater, or other sources flows over the Earth's surface.
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Surface water
Surface water is water on the surface of the planet such as in a river, lake, wetland, or ocean.
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