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  2. Gorgeous Front Yard Ideas That Take Practically No Upkeep - AOL

    www.aol.com/15-front-yard-landscaping-ideas...

    Raised beds provide a boundary that keeps your front yard looking neat. Natural stone is especially appealing and will last forever. Related: 20 Raised Garden Bed Ideas to Elevate Your Yard

  3. Landslide mitigation - Wikipedia

    en.wikipedia.org/wiki/Landslide_mitigation

    Deep drainage is the most effective. Sub horizontal drainage is very effective in reducing pore-pressure along crack surfaces or potential breakage surfaces. In rocks, the choice of drain spacing, slope, and length is dependent on the hillside geometry and, more importantly, the structural formation of the mass.

  4. Drainage equation - Wikipedia

    en.wikipedia.org/wiki/Drainage_equation

    Theoretically, Hooghoudt's equation can also be used for sloping land. [8] The theory on drainage of sloping land is corroborated by the results of sand tank experiments. [9] In addition, the entrance resistance encountered by the water upon entering the drains can be accounted for. Definitions of drainage of sloping land and entrance resistance

  5. Swale (landform) - Wikipedia

    en.wikipedia.org/wiki/Swale_(landform)

    This archetypal form of swale is a dug-out, sloped, often grassed or reeded "ditch" or "lull" in the landform. One option involves piling the soil onto a new bank on the still lower slope, in which case a bund or berm is formed, mitigating the natural (and often hardscape-increased ) risks to slopes below and to any linked watercourse from ...

  6. Ha-ha - Wikipedia

    en.wikipedia.org/wiki/Ha-ha

    Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so də lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...

  7. Drainage gradient - Wikipedia

    en.wikipedia.org/wiki/Drainage_gradient

    Drainage gradient (DG) is a term in road design, defined as the combined slope due to road surface cross slope (CS) and longitudinal slope (hilliness). Although the term may not be used, the concept is also used in roof design and landscape architecture. If the drainage gradient is too low, rain and melt water drainage will be insufficient.