Equivalent to navigate_byid for working with NHDPlus HR data? #21
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Is there a way to navigate NHDPlus HR flowline data using the navigate_byid function? So far, I've only been able to use it with MR data. I would like to be able to get the main streams of smaller tributary networks within a watershed (including those that aren't available in the MR product). |
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No, NLDI service currently only supports NHDPlus MR since the HR version is still not production-ready. Regarding getting the main flowlines, for a dataframe of flowlines of a single watershed (for example, after removing the isolated flowlines), you can use flw = flw[flw.levelpathi == flw.levelpathi.min()] You can check out this example tutorial. In general, you can use a combination of |
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No, NLDI service currently only supports NHDPlus MR since the HR version is still not production-ready. Regarding getting the main flowlines, for a dataframe of flowlines of a single watershed (for example, after removing the isolated flowlines), you can use
levelpathi
like so:You can check out this example tutorial.
In general, you can use a combination of
terminalpa
andlevelpathi
to get the main flowlines. But there are edge cases, so it depends on the region of your interest. You can consult the NHDPlus documentation for a better understanding of different attributes and how they can be used to achieve your purpose.