| http://www.w3.org/ns/prov#value | - Given the uneven topography of most bedrock formations, or beds of clay impervious to water--with basins here and there, low points and highpoint, steep slopes and gentle grades--some water settles into pockets cut off from the general downward Flow, and stays put (as much as water can stay put) as groundwater in a kind of underground lake or aquifer that is not open water in any sense but water a
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