Tag:sinkhole=estavelle
| sinkhole = estavelle |
| Description |
|---|
| Sinkhole through which water either emerges or disappears, depending on hydrological conditions |
| Group: Natural |
| Used on these elements |
| Requires |
| Useful combination |
|
name=* |
| Status: approved |
| Tools for this tag |
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An estavelle is a sinkhole, typically connected to a waterbody, which can act as a ponor or as a karst spring, depending on hydrological conditions:
- if the groundwater level inside the karst system rises, the estavelle acts as a discharge, allowing the karst water to flow out forming a surface waterway
- on the contrary, with falling water levels, the estavelle acts as a ponor, swallowing surface water and draining it to the karst groundwater system.
An estavelle may be on the path of a waterway, or connected to a main waterway by a small one, whose flow will change according to the respective water levels of the karst system and of the waterway; if in the second case, use flow_direction=both to highlight the flow variations of the connecting waterway.
Example
The Trou des Glanes, an estavelle in France, would be tagged this way:
natural=sinkhole sinkhole=estavelle name:fr=Trou des Glanes refitted=yes
See also
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