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RESOLUTION R-1718-9: A RESOLUTION OF THE CITY OF NORMAN, OKLAHOMA, APPROVING A MODIFICATION TO THE STREAM BANKS OF IMHOFF CREEK SOUTH OF WESTBROOKE TERRACE AS PART OF THE IMHOFF CREEK CHANNEL REPAIR PROJECT.
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BACKGROUND: From the time period of May 5th to May 24th, 2015, the City of Norman experienced an EF-1 tornado and multiple flash flooding events. The attached graph, prepared by staff at the National Weather Center, illustrates a historic level of flooding in Norman in May 2015, with over 23 inches of rainfall, or nearly 10 more inches of rain than the previous May, 1957 rainfall record in Norman of 13.43 inches.
According to the National Weather Center, at least five of those rainfall events in May 2015 involved flash flooding conditions. Flash floods can be very damaging to the City's infrastructure, particularly roads, bridges and stormwater systems. With each flooding event in May 2015, the City encountered more infrastructure damage and road closures. At one point in May, 35 of Norman's roads were closed to traffic, due to damage or high water. Most of these roadways are located in rural east Norman. The Public Works Department has continually tracked an inventory of damaged roads and bridges. To date, 66 damage locations from the May 2015 storms have been identified, as shown on the attached map. One of these locations identified as Site #17 on the map was the Imhoff Creek Channel Repairs located south of Westbrooke Terrace and east of Berry Road. Damages to the channel included washing out approximately 250 feet of articulated concrete block channel and damage to a concrete block drop structure.
City staff has worked closely since May 2015 with officials from Oklahoma Emergency Management (OEM) and the Federal Emergency Management Agency (FEMA) regarding storm damage assessments and the potential for state and federal disaster relief financing. Mayor Cindy Rosenthal declared a local disaster by resolution on May 19, 2015. G...
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