Can anyone offer any advise on how to classify flowlines into perennial, intermittent and ephemeral? I have created flowline using the hydrology toolset in ArcGIS Pro using 1/3 arc sec DEMs. ... View more

ArcGIS Proor Arcmap Hi everybody, I would like to ask if AUV (autonomous underwater vehicle) data can be processed with ArcGIS Pro or ArcMap, the data contains XYZ (MBES-multibeam, SBP-sub bottom profiler and SSS sidescan sonar). for hydro survey, did somebody experince with this kind of thing? Thank you for your time. ... View more

Sometimes I am getting text files that contain only XYZ (easting, northing, and height) with 10-15GB size (points or polylines). If I need to interpolate that file or create fishnet, adjust Z value of data or etc. in ArcMap it stops or taking forever. My comp specs I7,32GB RAM, working on SSD, GeForce GTX 1080, 4.20GHZ. Please, if you have any suggestions let me know, thank you for your attention. ... View more

Hello, I would like to express a question about the Basin tool, from the Hydrology of Spatial Analyst tools. I use the Flow Direction raster in order to create the Basins of an area. I can' t understad what the values of the raster that is created with the tool basin represent. The values that i get are 1 (the lowest) to 4665 (the highest). Any advice about those values?Thank you very much for your responses! ... View more

I was trying out the procedure to delineate watershed using series of geoprocessing tools in ArcMap 10.5.1. Everything seems to go exceedingly well that I was a little afraid of the degree of hitch that will pop up. Et voila! This (please refer to the screenshot attached below).  I tried generating a raster delineating all drainage basins using the 'Basin' geoprocessing tool with the 'Flow Direction' raster output as the input. The result is perfect except for the 'barcode'-like distortion I have there. I thought that it was a glitch, so I test out every single step from the beginning but still get this output. This makes converting the raster to polygon hell of a problem. Below I have outlined what I did prior to the result: Use SRTM DEM downloaded from NASA Earthdata site.  Projected the raster from GCS WGS 1984 to Timbalai 1948 RSO Borneo Meters (WKID29873) Run the 'Fill' GP tool to fill in the possible sinks in the DEM Input raster: reprojected DEM raster ('Project Raster' GP tool output) Determine and generate the raster for the flow of water in each cells using the 'Flow Direction' GP tool Input raster: 'Fill' GP tool raster output Create a raster delineating all drainage basin using the 'Basin' GP tool Input raster: 'Flow Direction' GP tool raster output If any of you guys have experienced this problem before and know the probable cause (and workaround of course), your two cents would be awesome.  P/S: I only have 'Spatial Analyst' and '3D Analyst' extension installed. No ArcSWAT or ArcHydro. Azalea ... View more