my first post here, and i'm a trying to learn QGIS now that i've graduated and ARC is no longer an option. I am trying to download and open with QGIS state-specific data from the USGS NHD Viewer, and ...
Our legacy fish distribution data contains data by reaches. Reaches are arbitrary locations on streams, eg. reach 1, 2, 3. Each reach's from-to are known, but not by x,y coords. An example is 'brown ...
I need to summarize downstream information associated with each arc in an NHD dataset. I have a table with the downstream ID for stream segment but am not sure how to get all of the downstream IDs. ...
I am running QGIS 1.8 on a windows xp pc and trying to put the USGS National Hydrology Dataset (more info herefor Oregon into a project. I try to "add vector data", using directory option then ...
I am creating SOE to do stream trace. That works fine. The geometric network only have NHD flowline. The problem is that tracing result return whole flow line. I am wondering if the result only return ...