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Retrofits are structural stormwater management measures inserted in an urban or ultra-urban landscape where little or no prior stormwater controls existed.

What Are Stormwater Retrofits?

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What are retrofits and why are they important? Retrofits are structural stormwater management measures for urban watersheds designed to help minimize accelerated channel erosion, reduce pollutant loads, promote conditions for improved aquatic habitat, and correct past mistakes. Simply put, these stormwater management practices (SMPs) are inserted in an urban landscape where little or no prior stormwater controls existed.