[OSM-talk-ie] Water depth in lake

[Colm Moore]

Hi,

This is potentially life or death information, so I'm not sure if it is approved for OSM.

Different datums (measurements) are used: http://en.wikipedia.org/wiki/Chart_datum  However, with lakes, you might find novel effects on water depth, like flows from higher rivers / lakes, reservoirs, currents, etc.

Colm

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> Message: 2
> Date: Fri, 29 May 2015 15:10:51 +0100
> From: Daniel Cussen <dan at post.com>
> To: Discussion of OpenStreetMap in Ireland <talk-ie at openstreetmap.org>
> Subject: Re: [OSM-talk-ie] Water depth in lake

> 
> 3) Depth is normally displayed on maps as mean tide level (I think),
> are you taking into account tide (off shore) or recent rain for rivers
> to calculate the actual depth below mean level?
>