[OSM-talk-ie] Water depth in lake

[moltonel 3x Combo]

On 31/05/2015, Daniel Cussen <dan at post.com> wrote:
> Could you use height info from the GPS? Would it be good enough to
> calculate depth below sea level at that point? GPS height might take
> into account variable water height?

I very much doubt it. Vertical accuracy of GPS is by design tradeoff
worse than horizontal accuracy, which itself is generally 3m unless
your GPS costs thousands of euros. A 4-5m altitude error is fine for
hillwalking, but not for lake water depth.