Latest Contributions by SeanWineland

I have the DEM model for the study area. I have gone through the step by step process of creating all of the various shapefiles in your flow chart above for the hydrology toolset and the arc hydro toolbox but I can't find any information on how to use your own points to delineate the watershed boundary. I need to only have the contributing area above this point for my analyses. Since this is possible in streamstats it has to be somehow possible using either archydro or this hydrology toolset. I tried using the point in the pour point feature as you suggested but this came out as just a white blank raster. I also tried using the tutorials on this website for the arc hydro toolbox Dr. Venkatesh Merwade's web page but I can't get the catchment polygon processing step to work using archydro. I've been trying to work on this for the past three days and nothing at all has worked out. If anyone could give any insight on to how to do this it would be greatly appreciated, it seems like such a simple thing that needs to be done but a whole lot of steps to get there. ... View more

By custom points I just simply mean a sample location taken by me. A lat long coordinate. I want to determine the upstream watershed that contributes to all water in that watershed at that point. Is there any way to do this? ... View more

I have gone through this process already and unfortunately there is nowhere to use custom points to delineate an upstream watershed boundary from that point. ... View more

I have not ruled it out, was just hoping to automate the process given that I have 67 individual watersheds I need to do this for. I guess I can go with digitizing to get started. If I union the digitized polygons with the watershed boundary would this allow me to calculate the percentage of area within the watershed covered by mining? ... View more

I see, I do not have an arcgis online subscription anyways. My objectives are to somehow calculate the area of historical strip mining within individual watershed boundaries (I have shapefiles of watershed boundaries, and historical topo map files (DRG's). But this is proving to be quite difficult in every aspect. The DRG files I have downloaded are (.sid) files so I had to transform them into .tiff files to work with them. I'm currently trying to mosaic them together but this process has been running for 4 days now and I'm just really not sure if what I'm doing will work out. My professor thinks I can clip the mosiac to each watershed boundary and then run a supervised classification on the clipped image to extract areas of strip mining and non-strip mining, then perform a raster to vector on that image to calculate the area of strip mining. Any advice on how to achieve this goal would be greatly appreciated. ... View more

Cody, I tried the link to the historical maps database but it did not work, i tried to sign in and it told me that I was not a member of this organization. Is it possible to run raster analysis on these basemaps? (supervised classification?) ... View more

Curtis, Thank you so much for this information, I found DRG (.sid) files for the whole state I am working with. Any idea of how to mosaic these together? I will post another thread in this forum asking the same question. Thank you all so much for your help! xander_bakker‌ as well even though I might not be using the Python Script you came up with I appreciate all your help as well ... View more

Okay, so I figured out how to open the files and actually successfully executed the extract by rectangle in Python. However, the output is just blank. So im thinking the bounding box coordinates are the extent of the whole image including the white collar? Not entirely sure. How would you successfully extract just the image? ... View more

Thanks for your reply! I have never used python before, I have only ever done simple geoprocessing in ArcMap. Where do I find the .xml and .prj files and how would I do the transformation you are talking about? ... View more

I should add that these .tif files all had black borders around them that I tried to take away by just changing the symbology, but I realize this may not be enough for when i run the mosaic to new raster function. ... View more