Journal
SUSTAINABILITY
Volume 13, Issue 20, Pages -Publisher
MDPI
DOI: 10.3390/su132011268
Keywords
adaptation; climate change; ecological restoration; ecosystem services; green infrastructure; mitigation; conservation; restoration ecology; stormwater management; sustainability
Funding
- Northern Arizona University [1751]
- Land Change Science (LCS) Program of the U.S. Geological Survey
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The study examines the performance of a natural wash stormwater retention installation using one-rock dams in an urban park in Phoenix, Arizona, USA, focusing on infiltration, peak flow mitigation, and microclimate effects. Results show that the use of rock detention structures has the potential to reduce warming or heat effects in an urban arid land setting.
The potential of ecological restoration and green infrastructure has been long suggested in the literature as adaptation strategies for a changing climate, with an emphasis on revegetation and, more recently, carbon sequestration and stormwater management. Tree planting and natural stormwater detention structures such as bioswales, stormwater detention basins, and sediment traps are popular approaches. However, the experimental verification of performance for these investments is scarce and does not address rock detention structures specifically. This 3-year study investigates the infiltration, peak flow mitigation, and microclimate performance of a natural wash stormwater retention installation using one-rock dams in an urban park in Phoenix, Arizona, USA. Field data collected during the study do not depict change in the hydrogeomorphology. However, hydrologic modeling, using data collected from the field, portrays decreases in peak flows and increases in infiltration at the treated sites. Additionally, we observe a lengthening of microclimate cooling effects following rainfall events, as compared with the untreated sites. In this urban arid land setting, the prospect that rock detention structures themselves could reduce warming or heat effects is promising.
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