Sunday, July 20, 2014

Converting CORINE Land Use Classes to SWAT Land Use Classes

One of the initial challenges that you can encounter as a novice SWAT user who wants to use CORINE Land Use/Land Cover (LULC) maps  is converting the LULC to SWAT LULC:

Here is how I addressed this problem in my first SWAT project, which is on a 150-km2 watershed located in northwestern Turkey:

Corine2006 Code/Description:                                  SWAT:
121/Industrial or commercial units                                UCOM
122/Road and rail networks and associated land              UTRN
243/Land principally occupied by agriculture with significant areas of natural vegetation                                                                                                         AGRL
231/Pastures                                                                PAST
324/Transitional woodland scrub                                   RNGB
242(1)*/Complex cultivation patterns                              AGRL
311/Broad-leaved forest                                                FRSD
312/Coniferous forest                                                   FRSE
212(1)*/Permanently irrigated land                                 AGRL
313/Mixed forest                                                          FRST
321/Natural grassland                                                   RNGE
112(2)*/Discontinuous urban fabric                               URLD
211(1)*/Non-irrigated arable land                                   AGRC
512/Water bodies                                                         WATR
411/Inland marshes                                                      WETN

(*): Typical CORINE2006 LULC codes are three-digit. Some of the CORINE2006 codes in the map provided to me by my fellow researchers contained four digits. So, you can disregard the last digit given in parentheses.

You can download the small .txt that I wrote for my ArcSWAT (version 2012.10.1.15 released on 6/20/14) project from here. You can edit this file as you please and use it in your ArcSWAT project.

Please check out the following references, which helped me quite a bit during my own conversion process: