On 21/07/18 09:23, Graeme Fitzpatrick wrote:
On 21 July 2018 at 04:59, Michael Patrick<[email protected]
<mailto:[email protected]>>wrote:
* Does light reach the bottom of the deepest point of the water
body?
* 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 <[email protected]
<mailto:[email protected]>> 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! :-))
Ephemeral. :)
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