Too high LS factor values SDR model
Hey, NatCap folks!
Hope you are doing good and had a great symposium, as always!
I`m having some very high values for the USLE`s LS factor in recent SDR runs (as they are presented in the temporary folder). The original DEM is the 30m pixel official DEM for Sao Paulo State (http://www.ambiente.sp.gov.br/cpla/modelo-digital-de-elevacao-mde-do-estado-de-sao-paulo ) from where was clipped the elevation values from a watershed in the Ribeira valley. The extract was then processed in the RouteDEM and the pit filled DEM was used as elevation input in SDR model.
The LS values reached 2900 in some scattered plots and the average value was almost 22, while another LS map calculated to SP state shows maximum value of 17 and 10 in average, for the same watershed (have in mind this other map was derived from SRTM).
Here goes Dropbox links for: (I haven`t succeed to upload it using the "Attach a file" button)
1) the extracted DEM file (before to run in RouteDEM) https://www.dropbox.com/s/hhu4y4khxy6p51a/DEM_extracted_SPmap.rar?dl=0
2) the pit filled DEM (after RouteDEM) https://www.dropbox.com/s/rp2q3711holx4pv/pit_filled_Juquia.rar?dl=0
I `d appreciate if you get to take a look and perhaps identify what could cause such big LS values. Is there some pre-processing technique to avoid those outlier values?