acres du bassin versant en amont à partir du point

Question

<\/HEAD>Bonjour. J'ai besoin de calculer la superficie en acres des limites du bassin versant en amont à partir des points d'intersection entre un tracé proposé et les eaux de surface. Je n'ai jamais utilisé les outils ArcHydro et on m'a dirigé depuis le site USGS StreamStats, et je me demandais quelle est la meilleure méthode pour obtenir cette information. J'apprécie toute aide - juste une indication dans la bonne direction pour commencer. J'utilise ArcGIS 10.4 Merci !<\/P><\/BODY><\/HTML>

CrystalSchiffbauer-Bowles1 · Answer

Hello everyone. Well, it turns out the the StreamStats ended up working which saved me TONS of time. I think I must've been trying to use the application as they were finalizing v4 development because the last day I tried using it everything came together.

I appreciate everyone's help and input. Thanks!

CrystalSchiffbauer-Bowles1 · Answer

Thank you! I'll definitely look into these... and ask questions if I have any

MarkBoucher · Answer

Another helpful tool set can be found using HEC-GeoHMS. This is a free ArcMap tool that has the basics of the Arc Hydro tool.

The geoprocessing tools for Arc Hydro are in this tool but they are somewhat simplified. That is, you could use the GeoHMS tools just like the Arc Hydro tools. GeoHMS was created by ESRI for the US Army Corps of Engineers Hydraulic Engineering Center (HEC). It has additional tools to build HEC-HMS models, something I suppose you don't need. When you install HEC-GeoHMS it will also install the compatible Arc Hydro tools.