Rain Gardens Jeopardy Template

Rain Garden Improvements	Concepts and Design	Calculations	Rain Garden Sizing Design
100 Distribute the flow. Ex/ Flat panel curbs How can we improve flow into a rain garden?	100 Volumetric reduction and better water quality What are the two possible reasons to build a rain garden?	100 59 m2 Calculate the rain garden base area if the impervious tributary area is 1000 m2 and I/P is 17	100 This represents the ratio of impervious catchment area to Base Area of the Rain Garden. What does the I/P ratio represent?
200 Poor topsoil selection What has been found to be responsible for numerous rain garden failures?	200 Choose plants that tolerate wetter conditions. In Zone 1 (bottom) of the rain garden, what type of plants should be chosen?	200 550mm (Round down to the nearest 50). You calculated a rock depth of 570mm, what depth should be used in design?	200 Sizing for depth capture criteria, Sizing for % Capture of Average Annual Rainfall What are the two methods of sizing?
300 Leaves have a tendency to smother vegetation, reduce the infiltration rate of the growing medium soils, and plug overflow drains. What might happen if deciduous trees are used to improve rain garden aesthetic?	300 A growing medium, Vegetation, Rock trench (or reservoir), Perforated drain, Above-ground storage zone, Overflow pipe Name 3 of the 6 basic components of a rain garden.	300 549mm, use 500mm. Calculate maximum rock depth based on the 4 day maximum drain time if: Ks = 2 mm/hr, n = 0.35	300 The rock trench Increasing the size of what component of the rain garden will improve infiltration into low permeable soils?
400 Use an underdrain How can you ensure that the vegetation roots do not drown due to long-term saturation of the topsoil?	400 Determine Size, Choose Site, Assess Soil, Design/Build, Plant/Mulch, Maintain What are the 6 steps to build a rain garden?	400 16.4 Calculate I/P if: Ks = 2mm/hr, Dp = 200mm, DR = 400mm, n = 0.35, Ds = 450mm, R = 50% of 55mm	400 Build up of sediment Besides depth of ponding, what does the rain garden depth also need to account for?

Rain Gardens

Press F11 for full screen mode