overland flow


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Related to overland flow: Surface runoff

overland flow

[′ō·vər·lənd ′flō]
(hydrology)
Water flowing over the ground surface toward a channel; upon reaching the channel, it is called surface runoff. Also known as surface flow.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Thus, more studies are needed to reveal the impacts of surface topography on infiltration, wetting front movement, unsaturated flow, overland flow generation, and surface runoff processes under natural conditions using field to watershed scales.
Such a large loading (equivalent of 3 g of pure 1080 over 0.4 [m.sup.2]) was done to ensure that we could detect the differential movement of leached 1080 via overland flow, soil water or groundwater, and was not meant to replicate normal catchment loadings.
Mathematical modeling of overland flow involves the solution of the governing equations for both the surface flow and the groundwater flow by the interior physical mechanism.
However, our findings show that overland flow contributed very little to survival, growth, reproduction, and ecophysiology of these trees.
In KINEROS/hsB-SM, runoff generation can occur either as infiltration excess overland flow (when the rainfall rate overcomes the infiltration capacity of soils), leading to Horton overland flow, or from saturation excess, which usually occurs next to streams and can arise when the water table rises to the surface because of rapid infiltration in place and/or rapid movement of water downhill from upslope areas.
Souza et al., "Patterns of grain-size temporal variation of sediment transported by overland flow associated with moving storms: interpreting soil flume experiments," Natural Hazards and Earth System Science, vol.
The soil detachment rate by runoff (H) is higher (35t [ha.sup.-1] [y.sup.-1]) on the steep-hilly parts of the catchment (Figure 6(b)), as slope steepness increases the amount and velocity of overland flow or surface runoff (SR) (Figure 5(i)).
Overland flow on a specific site is difficult to measure, and little is known about the mechanics of soil loss by this process.
The influence of the pattern of moving rainstorms on overland flow. Advances in Water Resources., 25(7): 817-828.
McDowell RW, Drewry JJ, Paton RJ, Carey PL, Monaghan RM, Condron LM (2003b) Influence of soil treading on sediment and phosphorus losses in overland flow. Australian Journal of Soil Research 41, 949-961.
This pattern is consistent with TON, N[H.sub.4.sup.+], TP and DOC being primarily exported via quick transport processes such as overland flow or preferential flow to tile drains via macropore flow (Stone & Wilson 2006; Wagner et al.