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IGroundwaterOp.DarcyVelocity Method (ArcObjects .NET 10.5 SDK)
ArcObjects Library Reference (SpatialAnalyst)  

IGroundwaterOp.DarcyVelocity Method

Calculates the groundwater seepage velocity vector (direction and magnitude) for steady flow in an aquifer.

[Visual Basic .NET]
Public Function DarcyVelocity ( _
    ByVal headRaster As IGeoDataset, _
    ByVal porosityRaster As IGeoDataset, _
    ByVal thicknessRaster As IGeoDataset, _
    ByVal transmissivityRaster As IGeoDataset _
) As IGeoDataset
[C#]
public IGeoDataset DarcyVelocity (
    IGeoDataset headRaster,
    IGeoDataset porosityRaster,
    IGeoDataset thicknessRaster,
    IGeoDataset transmissivityRaster
);
[C++]
HRESULT DarcyVelocity(
  IGeoDataset* headRaster,
  IGeoDataset* porosityRaster,
  IGeoDataset* thicknessRaster,
  IGeoDataset* transmissivityRaster,
  IGeoDataset** residualDataset
);
[C++]

Parameters headRaster [in]
headRaster is a parameter of type IGeoDataset porosityRaster [in]
porosityRaster is a parameter of type IGeoDataset thicknessRaster [in]
thicknessRaster is a parameter of type IGeoDataset transmissivityRaster [in]
transmissivityRaster is a parameter of type IGeoDataset residualDataset [out, retval]
residualDataset is a parameter of type IGeoDataset

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server. Requires Spatial Analyst Extension.

Remarks

headRaster

Raster containing values of groundwater head elevation for each cell in the raster. 

The head is typically an elevation above some datum, such as mean sea level.

porosityRaster

Raster containing values of effective formation porosity for each cell in the raster

thicknessRaster

Raster containing values of saturated thickness for each cell in the raster

transmissivityRaster

Raster containing values of formation transmissivity for each cell in the raster

The transmissivity of an aquifer is defined as the hydraulic conductivity K times the saturated aquifer thickness b, as units of length squared over time. This property is generally estimated from field experimental data such as pumping tests.

 

See Also

IGroundwaterOp Interface