Will FEMA require hydraulic simulations with and without the CU-South Campus berm as part of the floodplain study?

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Will FEMA require hydraulic simulations with and without the CU-South Campus berm as part of the floodplain study?

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FEMA has required the submittal of existing conditions topography and hydrologic and hydraulic analyses indicating the impacts of a levee failure on the lower reach of the CU-South Campus berm in order to process the certification of the upper levee reach (that has been determined to meet FEMA standards and be structurally stable). There has been no FEMA requirement to analyze the floodplain without the upper reach of the berm in place. The flood mapping study will satisfy the FEMA required hydraulic analyses based on the existing conditions topography with the upper reach of the berm in place. The lower reach of the berm is hydraulically disconnected from flood waters (meaning that the lower berm reach is not confining or diverting flood flows) and has no impact on the West Valley flow split at US 36. The flood mapping study will exceed the FEMA levee certification review requirement by completing additional analyses of flooding without the upper reach of the berm in place.

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