Techniques Used in an Urban Watershed Planning Study
For planning level studies of urban flooding, it is important to obtain reasonable estimates of hydraulic performance and water quality improvements at a cost commensurate with the level of detail. The Buffalo District Corps of Engineers needed a planning-level study for a 1,400 acre (570 ha) flood-prone area in the City of Buffalo, New York. This planning study included: reviewing previous studies and models; and adjusting, refining and expanding an existing SWMM 3.0 model to SWMM 4.3. Improvements to the SWMM 4.3 model better reflected existing and proposed conditions. The proposed conditions included a diversion/storage plan. Hydraulic performance and water quality improvements resulting from the plan, were used to determine it’s economic viability.
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