Good afternoon everyone
I am running a SDR model on INVEST 3.30 for watershed in the Amazon region in Peru. I have three question about my outputs.
First of all, Why in the outputs sed_export and sed_retention raster (output folder) there several gaps (no data)?. I have revised my DEM (and it is filled) and the other imputs looks fine. This gaps has influenced in the resuts shapefile?
Second, what is the influence of threshold flow accumulation if it were changed (1000 as a default to 10000)?, I showed for example that sed_export of a watershed changed between 1367.43 to 2289.4
Third, Why my results (in the shapefile) when is compared with a scenario actual and a scenario future (with a Dam), looks the sediment retent more and expor less? if I changed the soil for water (areas that will be flooded)
Thank you for you help.