[Tagging] Lake or Pond
61sundowner at gmail.com
Sat Jul 21 01:06:45 UTC 2018
On 21/07/18 09:23, Graeme Fitzpatrick wrote:
> On 21 July 2018 at 04:59, Michael Patrick<geodesy99 at gmail.com
> <mailto:geodesy99 at gmail.com>>wrote:
> * Does light reach the bottom of the deepest point of the water
> * Does the water body only get small waves (i.e., smaller than
> 1ft/30cm in height)?
> * Is the water body relatively uniform in temperature?
> If these questions can be answered with a “yes,” the water body is
> likely a pond and not a lake.^1
> Other national technical typologies do include a lower area
> requirement ranging from .5 hectares ( 'two NFL football fields'
> for USA residents ) to 2 hectares, and other various factors like
> inflow/outflow, relation to the water table, sediment suspension, etc.
> On 21 July 2018 at 05:20, Dave Swarthout <daveswarthout at gmail.com
> <mailto:daveswarthout at gmail.com>> wrote:
> My criteria for deciding between lake and pond are therefore
> mostly based on size. Sometimes a lake-sized water body is
> obviously very shallow and so I tag it as a pond.
> Being an awkward Aussie again :-)
> Lake Eyre, https://en.wikipedia.org/wiki/Lake_Eyre, when full, has a
> surface area of "9,500 km^2 (3,668 sq mi)" but has only filled a
> handful of times in the last ~150 years. Even when full, the maximum
> water depth in the deepest spot is only 6 m's, with most being <3 m's,
> & the water is virtually transparent, so that the lake bottom can
> still be seen from the air.
> So this makes it only a pond? (& a intermittent one at that! :-))
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