The City of Redlands, located in San Bernardino County, California, has been plagued by flooding in their historic downtown area for over 125 years. Four major watersheds and undersized aging infrastructure contribute to flood depths of over 1 to 1.75 meters through the downtown area. Several studies have been completed over the last few decades to identify flood hazards and potential solutions, with varying results. As part of their new Master Plan of Drainage, the City requested a comprehensive study to identify potential improvements and their potential impacts to the existing floodplain. The results of this evaluation are being used to establish flood risk maps in addition to establishing a basis for future Drainage Impact Fees.
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