Term
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Definition
| the passage of water through the surface of the soil, via pores or small openings, into the soil profile |
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Term
| The downward movement of water through a soil profile is caused by what? |
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Definition
Tension and gravitational forces in the soil matrix
Tension forces aka- suction, matric, or capillary forces |
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Term
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Definition
| generally heterogeneous and consists of a labyrinth of pores of varying shape and size connected by porous fissures and channels |
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Term
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Definition
| attraction of water to the sides of the pore. |
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Term
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Definition
| the attraction of water to water |
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Term
| In 1856 Henry Darcy developed what? |
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Definition
| The basic relationship for describing the flow of water through a homogeneous soil. Darcy used sand as porous media and concluded that the rate of flow is proportional to the hydraulic gradient. |
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Term
| Runoff is the total amount of water flowing in a stream. How do you show that in an equation? |
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Definition
Overland + interflow + baseflow + return flow
OR
Runoff = Precipitation - ET – (Interception) - Infiltration |
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Term
| What are the factors affecting runoff? |
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Definition
Precipitation-
Type, duration, amount, intensity
Design storm event
Watershed
Size, topography, shape, orientation, geology, interflow, soil, land use. |
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Term
| Factors affecting runoff and infiltration? |
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Definition
Climate
Elevation and Orientation of Watershed
Topography
Vegetation
Soil Types
Geology
Land cover and Land use |
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Term
| Long-term climate determines? |
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Definition
Amount of water supplied
Residence time in the reservoir
Temperature |
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Term
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Definition
Storm type
Precipitation type (snow or rain)
Duration
Intensity
Frequency (antecedent precipitation) |
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