| 摘要 |
A fluid containment basin having ridges located in the bottom of the basin and furrows adjacent to the ridges to facilitate maintenance of the basin using the naturally occurring forces of gravity, wave action and fluid currents. The ridges can be formed from material taken from the furrows into shapes that facilitate wave action against the sides of the ridges. While the fluid level is above the ridges, sediment settles on the ridges and furrows, reducing the permeability of the ridges and furrows and, therefore, the drainage from the basin. Wave action against the sides of the ridges as the fluid level is lowered washes the sediments off the ridges into the furrows, thereby restoring the permeability of the ridges. The wave action can be wind generated or induced by a wave mechanism. The furrows can be allowed to become impermeable or be lined to prevent contaminates from migrating.
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