river

This function identifies river headwater cells based on threshold
 values in a topographic index and accumulated area river (generated
 using <code>topidx</code>. Rivers are then traced downslope using a single flow algorithm.

Set of hydrological functions including an R
implementation of the hydrological model TOPMODEL, which is
based on the 1995 FORTRAN version by Keith Beven. From version
0.7.0, the package is put into maintenance mode.

Wouter Buytaert

topmodel

Implementation of the Hydrological Model TOPMODEL in R

river function

<dl> <dt>DEM</dt>
<dd>A matrix representing a digital elevation model [m] with equally sized pixels and equal NS and EW resolution</dd> <dt>atb</dt>
<dd>Matrix with topographic index values generated by <code>topidx</code></dd> <dt>area</dt>
<dd>Matrix with drainage area values generated by <code>topidx</code></dd> <dt>res</dt>
<dd>Resolution of the digital elevation model (m)</dd> <dt>thatb</dt>
<dd>A topographic index threshold for headwater cells</dd> <dt>tharea</dt>
<dd>A drainage threshold for headwater cells</dd></dl>

Arguments

Wouter Buytaert, Imperial College London, based on an implementation from the Hydrology Group of Lancaster University

Author

Identification of rivers in a digital elevation model — river

<dl>

 <dt>DEM</dt>
<dd>A matrix representing a digital elevation model [m] with equally sized pixels and equal NS and EW resolution</dd>

 <dt>atb</dt>
<dd>Matrix with topographic index values generated by <code>topidx</code></dd>

 <dt>area</dt>
<dd>Matrix with drainage area values generated by <code>topidx</code></dd>

 <dt>res</dt>
<dd>Resolution of the digital elevation model (m)</dd>

 <dt>thatb</dt>
<dd>A topographic index threshold for headwater cells</dd>

 <dt>tharea</dt>
<dd>A drainage threshold for headwater cells</dd>

</dl>

river: Identification of rivers in a digital elevation model

Description

Usage

Value

Arguments

Author

Details

References

See Also