Evidence details
rebecca.killalea@canberra.edu.au on 16 Feb 2022
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Study
- Citation
- Carpenter, D. D., & Kaluvakolanu, P. (2011). Effect of Roof Surface Type on Storm-Water Runoff from Full-Scale Roofs in a Temperate Climate. Journal of Irrigation and Drainage Engineering.
- Study description
- Assessed the runoff volume and water quality from 3 roof types - asphalt, stone ballasted and vegetated green roof. Study was undertaken to assess the benefits of a green roof as a stormwater management practice.
Response
- Cause term/trajectory
-
Land use/land cover - urban
- Cause description
- Green roof
- Effect term/trajectory
-
Hydrology - surface flow (volume)
(Decrease)
- Effect description
- Retention of stormwater at source. Study found that both a green roof and stone roof were effective in reducing runoff volume through the attenuation of flow. The green roof achieved a 68.25% rainfall volume reduction throughout the study.
- Response measure type
- Mean difference
Design
- Source data
- Field
- Study type
- Observation
- Study design
- Control/reference vs. treatment/impact (no before)
- Number of independent control or reference sampling units
- 1
- Number of indendent impact or treatment sampling units
- 3
- Sample size used in analysis
- 63
- Design description
- 1 control (asphalt) 2 treatments (stone and green roof) sampled for 21 storm events over a 6 month period
Context
- Climate
- Temperate
- Country
- United States
- Habitat
- Artificial
- Spatial extent
- Other
- Temporal extent
- Months