Key:waterway/Narrow variants
There was some discussion that waterway=ditch does not differentiate a waterway from a waterway=stream by size, but only by having been excavated by human intervention. Comparing the first and the last picture in the table below I propose that waterway=stream isn't suitable for the full range of differents streams. Some of these might well be man made, but the problem stays the same.
I have tagged some of the first examples as waterway=brook for now, until there's some sort of a guideline.
| Image | Approximate width | Description | Tags? |
|---|---|---|---|
| 20 cm | An intermittent brook, just a narrow depression most of the time. | ||
| 40 cm | An intermittent brook, just a narrow and possibly moist depression most of the time. | ||
| 60 cm | An intermittent waterway, possibly just a moist depression part of the year. Ditch, brook or stream? | ||
| 80 cm | A waterway filled with water most of the year, but could run dry in the summer. Ditch, brook or stream? | ||
| 1 m | A stream filled with water year round. All but the elderly could just jump over it. | ||
| 1.5 m | A stream filled with water year round. Not all would, but most people could still jump over it. | ||
| 1.7 m | A stream filled with water year round. Most people wouldn't try to jump over it, even if many could with a running start. | ||
| 2.0 m | A stream filled with water year round. Only few could jump over it. | ||
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