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2. Two-stage drainage ditch - Wikipedia

   en.wikipedia.org/wiki/Two-stage_drainage_ditch

   The primary disadvantage associated with the two stage drainage ditch is the upfront cost of the earthwork necessary to increase the existing channel for the benches to be constructed. Construction costs for such earthwork are contingent upon the watershed size and depth of the ditch and approximately range from $5–20 USD/linear foot. [6]

3. Grading (earthworks) - Wikipedia

   en.wikipedia.org/wiki/Grading_(earthworks)

   Section through railway track and foundation showing the sub-grade. Grading in civil engineering and landscape architectural construction is the work of ensuring a level base, or one with a specified slope, [1] for a construction work such as a foundation, the base course for a road or a railway, or landscape and garden improvements, or surface drainage.

4. 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.

5. Site plan - Wikipedia

   en.wikipedia.org/wiki/Site_plan

   Sites plan typically show buildings, roads, sidewalks and paths/trails, parking, drainage facilities, sanitary sewer lines, water lines, lighting, and landscaping and garden elements. [ 1 ] Such a plan of a site is a "graphic representation of the arrangement of buildings, parking, drives, landscaping and any other structure that is part of a ...

6. 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

7. Permeable paving - Wikipedia

   en.wikipedia.org/wiki/Permeable_paving

   Unlike a full-depth porous asphalt pavement, OGFCs do not drain water to the base of a pavement. Instead, they allow water to infiltrate the top 3/4 to 1.5 inch of the pavement and then drain out to the side of the roadway. This can improve the friction characteristics of the road and reduce road spray. [27]

8. Landscaping - Wikipedia

   en.wikipedia.org/wiki/Landscaping

   In order to landscape it, the land must be reshaped to direct water for appropriate drainage. This reshaping of land is called grading. [4] Sometimes in large landscaping projects like, parks, sports fields and reserves soil may need to be improved by adding nutrients for growth of plants or turf, this process is called soil amelioration. [5]

9. 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 ...