| A Station. Different colors represent different Data Sources | |
| An active Station (we are collecting data from it) | |
| An active Station referenced by one or more River Sections | |
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A visual Station, manually updated by users |
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A synthetic Station, the result of a formula combining the values of other Stations |
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A River Section w/ gauge and calibrations |
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A River Section w/ indirect calibrations |
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A River Section w/o any calibrations |
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A River Section w/o gauge |