Catchment Area (Flow Tracing)
O.Conrad (c) 2001
Flow tracing algorithms for calculations of flow accumulation and related parameters. These algorithms trace the flow of each cell in a DEM separately until it finally leaves the DEM or ends in a sink.
References:
Rho 8 (this implementation adopted the original algorithm only for the flow routing and will give quite different results):
- Fairfield, J. / Leymarie, P. (1991):
'Drainage networks from grid digital elevation models',
Water Resources Research, 27:709-717
Kinematic Routing Algorithm:
- Lea, N.L. (1992):
'An aspect driven kinematic routing algorithm',
in: Parsons, A.J., Abrahams, A.D. (Eds.), 'Overland Flow: hydraulics and erosion mechanics', London, 147-175
DEMON:
- Costa-Cabral, M. / Burges, S.J. (1994):
'Digital Elevation Model Networks (DEMON): a model of flow over hillslopes for computation of contributing and dispersal areas',
Water Resources Research, 30:1681-1692
Parameters
- Grid system
Grid system
- Grid system
- Elevation
Input Grid
-
- Sink Routes
Input Grid
-
- Weight
Input Grid
-
- Material
Input Grid
-
- Target
Input Grid
-
- Catchment Area
Output Grid
-
- Catchment Height
Output Grid
-
- Catchment Slope
Output Grid
-
- Total accumulated Material
Output Grid
-
- Accumulated Material from _left_ side
Output Grid
-
- Accumulated Material from _right_ side
Output Grid
-
- Step
Integer
-
Minimum: 1.0
- Method
Choice
-
Available choices: Rho 8, Kinematic Routing Algorithm, DEMON
- DEMON - Min. DQV
Floating point
- DEMON - Minium Drainage Quota Volume (DQV) for traced flow tubes
Maximum: 1.0
- Flow Correction
Boolean
-