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    "headline": "Ottawa Rain Gardens Reduce Flooding by 86% in Modeling Study",
    "dek": "Computer modeling shows rain gardens in streetside rights-of-way reduce urban flooding by 76% compared to private lots alone.",
    "prose": "Ottawa experienced a 1-in-200-year storm event in the summer of 2025, receiving 167 millimeters of rain in five hours which triggered nearly 5,800 reports of basement flooding. [^1]\n\nA study titled 'Photovoltaic panel arrays reshape soil erosion patterns and hydrodynamic processes on hillslopes' was published in the Journal of Hydrology by researchers from China's Northwest A&F University and the Chinese Academy of Sciences. [^2]\n\nInstalling rain gardens in streetside municipal rights-of-way alone reduced the flooded area to 2 hectares (5 acres), a 76% reduction despite occupying less ground than private lot gardens. [^3]\n\nRain gardens installed in both private lots and streetside rights-of-way reduced the flooded area to 1.2 hectares (3 acres), achieving an 86% reduction. [^4]\n\nResearchers developed a computer model of the Crystal Beach neighborhood in Ottawa to simulate flood scenarios using the actual rainfall record from the July 1 storm. [^5]\n\nThe researchers stated that erosive energy accumulated longitudinally, with flow velocity rising by 148% from the uppermost to the lowermost covered zone under laminar (Re <500) and subcritical (Fr <1.0) conditions, indicating the downslope-most panel row constitutes the critical location for foundation scour. [^6]\n\nTransverse rills, or small erosion channels running across the slope, developed beneath the drip lines in every PV configuration tested, while none formed on the bare slopes. [^7]",
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      "statement": "Ottawa experienced a 1-in-200-year storm event in the summer of 2025, receiving 167 millimeters of rain in five hours which triggered nearly 5,800 reports of basement flooding.",
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      "statement": "Installing rain gardens in streetside municipal rights-of-way alone reduced the flooded area to 2 hectares (5 acres), a 76% reduction despite occupying less ground than private lot gardens.",
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      "statement": "Rain gardens installed in both private lots and streetside rights-of-way reduced the flooded area to 1.2 hectares (3 acres), achieving an 86% reduction.",
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      "statement": "The researchers stated that erosive energy accumulated longitudinally, with flow velocity rising by 148% from the uppermost to the lowermost covered zone under laminar (Re <500) and subcritical (Fr <1.0) conditions, indicating the downslope-most panel row constitutes the critical location for foundation scour.",
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