the.com/lake bed

Where a lake stores its liquid assets until drought calls in the loan.

means The basin or depression that holds — or once held — a lake's water, exposed when the water level drops or dries up entirely.

from A plain compound: 'lake,' from Old English 'lacu' (meaning a stream or pool, possibly related to Latin 'lacus'), joined to 'bed' in its old geographic sense — the ground something rests upon, as in 'riverbed' or 'seabed.' That sense of 'bed' as 'the bottom surface beneath a body of water' has been standard in English since at least the 1600s, extending the cozier household meaning outward to describe nature's own furniture.

geology
flat basin sediment, often clay, left behind
dry version
becomes a playa, cracked into tile-like polygons
speed records
Bonneville Salt Flats is an ancient lake bed
farming bonus
drained ones make eerily fertile, flat cropland
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