Module Diffuse Pollution Risk

Diffuse Pollution Risk Mapping.
This tool tries to reproduce in parts the methodology of the SCIMAP - Diffuse Pollution Risk Mapping - Framework.

References:
Lane, S.N.; Brookes, C.J.; Kirkby, M.J.; Holden, J. (2004): A network-index-based version of TOPMODEL for use with high-resolution digital topographic data. In: Hydrological processes. Vol. 18, S. 191-201.

Milledge, D.G.; Lane, N.S.; Heathwait, A.L.; Reaney, S.M. (2012): A monte carlo approach to the invers problem of diffuse pollution risk in agricultural catchments. In: Science of the Total Environment. Vol. 433, S. 434-449.

Author: Cosima Berger, Olaf Conrad (c) 2014
Menu: Simulation|Hydrology

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Elevation	Grid (input)	`DEM`	-	-
	Channel Network (*)	Grid (optional input)	`CHANNEL`	-	-
	Land Cover Weights (*)	Grid (optional input)	`WEIGHT`	-	-
	Rainfall (*)	Grid (optional input)	`RAIN`	-	-
Output	Delivery Index	Grid (output)	`DELIVERY`	-	-
	Locational Risk	Grid (output)	`RISK_POINT`	-	-
	Diffuse Pollution Risk	Grid (output)	`RISK_DIFFUSE`	-	-
Options	Grid system	Grid system	`PARAMETERS_GRID_SYSTEM`	Grid system	-
	Default	Floating point	`WEIGHT_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 1.000000
	Default	Floating point	`RAIN_DEFAULT`	default value if no grid has been selected	Minimum: 0.000000 Default: 500.000000
	Flow Direction Algorithm	Choice	`METHOD`	-	Available Choices: [0] single [1] multiple Default: 1
	Channel Initiation Threshold	Integer	`CHANNEL_START`	minimum number of upslope contributing cells to start a channel	Minimum: 1 Default: 150
(*) optional

Command-line

Usage: saga_cmd sim_hydrology 4 [-DEM <str>] [-CHANNEL <str>] [-WEIGHT <str>] [-WEIGHT_DEFAULT <double>] [-RAIN <str>] [-RAIN_DEFAULT <double>] [-DELIVERY <str>] [-RISK_POINT <str>] [-RISK_DIFFUSE <str>] [-METHOD <str>] [-CHANNEL_START <num>]
  -DEM:<str>              	Elevation
	Grid (input)
  -CHANNEL:<str>          	Channel Network
	Grid (optional input)
  -WEIGHT:<str>           	Land Cover Weights
	Grid (optional input)
  -WEIGHT_DEFAULT:<double>	Default
	Floating point
	Minimum: 0.000000
	Default: 1.000000
  -RAIN:<str>             	Rainfall
	Grid (optional input)
  -RAIN_DEFAULT:<double>  	Default
	Floating point
	Minimum: 0.000000
	Default: 500.000000
  -DELIVERY:<str>         	Delivery Index
	Grid (output)
  -RISK_POINT:<str>       	Locational Risk
	Grid (output)
  -RISK_DIFFUSE:<str>     	Diffuse Pollution Risk
	Grid (output)
  -METHOD:<str>           	Flow Direction Algorithm
	Choice
	Available Choices:
	[0] single
	[1] multiple
	Default: 1
  -CHANNEL_START:<num>    	Channel Initiation Threshold
	Integer
	Minimum: 1
	Default: 150