Drainage ditch landscaping ideas â€“ The French sewer usually consists of gravel drainage and aims to divert water. If water flows through your property and collects it in undesirable places, the French sewer is the perfect solution. Drainage Ditch Landscaping Ideas French Theme | Iwms Please note: You are currently browsing img drainage ditch landscaping ideas fence randolph indoor that is 1501x1127px in size. This image is listed in drainage ditch landscaping ideas category. Drainage Ditch Landscaping Ideas French Theme Iwms, 1501x1127 in 1,180.30 KB.