HG Lab

Software availability

Developer: Rafael Hernández-Guzmán

Contact address: INIRENA-UMSNH. Av. San Juanito Itzícuaro s/n. Col. Nueva Esperanza. CP 58330. Morelia, Michoacán, México

Email: rhernandez.g@gmail.com

First year available: 2010

Software requirements: IdrisiAndes or Idrisi Taiga software

Hardware requirements: PCs with Windows.

Programming language: Visual Basic 6.0

Programming size: 0.32 Mb

Availability and cost: CN-Idris and data samples are free of charge.

We developed a raster-based Geographic Information Systems (GIS) tool called CN-Idris that outputs runoff estimates from land use/land cover and hydrologic soil group maps based on the Natural Resources Conservation Service Curve Number method. The tool enables the user to select among three antecedent moisture conditions and two values of the initial abstraction (Ia) parameter, and it has the option to include spatial variation in rainfall input.

Following figure show the procedure to estimate runoff in a raster environment:

Following figure show CN-Idris interface:

Hernández-Guzmán R., Ruiz-Luna A., Berlanga-Robles C.A. (2011). CN-Idris: An Idrisi tool for generating curve number maps and estimating direct runoff. Environmental Modelling and Software, 26: 1764-1766. https://doi.org/10.1016/j.envsoft.2011.07.006