Notas del episodio
How French Drains Redirect Subterranean Water
Palabras clave
FrenchHenryInsteadFluid DynamicsTreasury SecretaryFarm DrainageFlaggSoaker HoseWeeping TileEighth InchHydrostatic PressurePerforated PipeInch GapRoofing TilesSubterranean HighwayReverse SoakerCurtain DrainSurface Runoff