Timeline for Can anyone point me to a dataset (shapefile or other format) for the North American Continental Divide?
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| May 3, 2012 at 2:12 | comment | added | dmahr | The boundary regions have a hierarchical system of identification. The first two digits (HUC2) define broad basins. The first four digits (HUC4) define watersheds within those basins. And so on, all the way to HUC12, which represents extremely small catchment areas. Since the continental divide separates the broad basins (HUC2 areas) you can just Dissolve based on the HUC2 attribute, and the boundary that separates the resulting polygons is the Continental Divide. | |
| May 3, 2012 at 1:00 | comment | added | Llaves | Just what I was looking for. I knew it was defined hydrologically, but I'm not familiar enough with the hydrology datasets to have thought to look for the boundary dataset. I'm not sure how one would extract (or show) just the continental divide, since the actual individual features are more local basins. For example, in the part of NM that I am interested in, the features defining the divide are labeled as the Rio Grande and Upper Colorado regions. How would one select just those features that contribute to the divide? | |
| May 3, 2012 at 0:54 | vote | accept | Llaves | ||
| May 2, 2012 at 5:17 | history | answered | dmahr | CC BY-SA 3.0 |