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2. Rainwater tank - Wikipedia

   en.wikipedia.org/wiki/Rainwater_tank

   A rainwater tank (sometimes called a rain barrel in North America in reference to smaller tanks, or a water butt in the UK) is a water tank used to collect and store rain water runoff, typically from rooftops via pipes. Rainwater tanks are devices for collecting and maintaining harvested rain.

3. Raised-bed gardening - Wikipedia

   en.wikipedia.org/wiki/Raised-bed_gardening

   Raised-bed gardening is a form of gardening in which the soil is raised above ground level and usually enclosed in some way. Raised bed structures can be made of wood, rock, concrete or other materials, and can be of any size or shape. [ 1 ]

4. Rain garden - Wikipedia

   en.wikipedia.org/wiki/Rain_garden

   The first rain gardens were created to mimic the natural water retention areas that developed before urbanization occurred. The rain gardens for residential use were developed in 1990 in Prince George's County, Maryland, when Dick Brinker, a developer building a new housing subdivision had the idea to replace the traditional best management practices (BMP) pond with a bioretention area.

5. Wicking bed - Wikipedia

   en.wikipedia.org/wiki/Wicking_bed

   Water will only wick up 300-400mm [5] in potting mix. This is great for vegetables and other relatively shallow-rooted plants but unsuitable for deeper rootstock. Shrubs, trees, or anything with an invasive root structure may not benefit from being grown in a wicking bed.

6. Drainage basin - Wikipedia

   en.wikipedia.org/wiki/Drainage_basin

   In the Thiessen polygon method, the drainage basin is divided into polygons with the rain gauge in the middle of each polygon assumed to be representative for the rainfall on the area of land included in its polygon. These polygons are made by drawing lines between gauges, then making perpendicular bisectors of those lines form the polygons.

7. Tympanum (architecture) - Wikipedia

   en.wikipedia.org/wiki/Tympanum_(architecture)

   The late Romanesque tympanum of Vézelay Abbey, Burgundy, France, 1130s. A tympanum (pl.: tympana; from Greek and Latin words meaning "drum") is the semi-circular or triangular decorative wall surface over an entrance, door or window, which is bounded by a lintel and an arch. [1]