![]() Automated systems have their place(huge watersheds for example), but for many cases it is probably overkill and depending on the quality of your terrain data, potentially very flawed. Personally I dislike automated watershed delineation as either A) you put in a ton of preprocessing work burning in channels, culverts, bridges etc to make it not worthwhile time savings wise or B) you dont put in a ton of time and your results are useless. Are you looking at creating an unsteady or steady flow model? I've included the basic steps below and will branch it out depending on the method.ฤก) delineate your watershed-either manually or using an automated system like GeoHMS.
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