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Navideh Noori

Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed: A Modeling Approach. Navideh Noori Graduate Student, School of Forestry and Wildlife Sciences, Auburn University, nzn0004@auburn.edu Latif Kalin

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Navideh Noori

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  1. Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed: A Modeling Approach Navideh Noori Graduate Student, School of Forestry and Wildlife Sciences, Auburn University, nzn0004@auburn.edu Latif Kalin Associate Professor, School of Forestry and Wildlife Sciences, Auburn University, kalinla@auburn.edu Charlene Lebleu Associate Professor, Landscape Architecture, Auburn University, leblecm@auburn.edu PuneetSrivastava Associate Professor, Biosystems Engineering, Auburn University, srivapu@auburn.edu

  2. Background and Objective Waves break over the shoreline of Lake Pontchartrain, Louisiana Hurricane Isaac Urban Hydrograph Tropical Storm Debby, Florida 2012 New Orleans Flooding 2005 Hurricane Katrina Sea water surges, Waveland, Miss 2012 Hurricane Isaac Rainfall/ Discharge Pre-urban Hydrograph Time Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed Flood issue in coastal areas Land use and cover changes and urbanization Minimizing the adverse impacts of urbanization on flooding Effects of changing land use over time on flow volumes and peak flows The association of historic (1966) and current (2011) land use/cover conditions with streamflow

  3. Study Area Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  4. NLCD 2001, DEM, Soil Data HEC-GeoHMS CN Flow Hydrograph Hourly Rainfall data of Mobile Regional Airport station from NCDC HEC-HMS Flow Hydrograph Add Your Text Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  5. Flow Hydrographs 4 years of streamflow data (1996 to 2000), 12 significant events March, 2000 January, 1997 March, 1998 March, 1997 Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  6. Aerial Photo, 2011 Aerial Photo, 1966 Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  7. Land Use Map (2011) Land Use Map (1966) Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  8. Land Use Changes Over Time Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  9. Design Storms IDF curves: http://bama.ua.edu/~rain/ Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  10. Results Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  11. Index Method 1 Flood Prone Area 2 3 5 4 Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  12. Index Method * PFGA: Potential Flood Generating Area Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  13. Index Method LULC 2011 LULC 2011 except “1” LULC 1966 1 1 1 2 2 2 3 3 3 :Area of element j : Peak flow R index: A measure of strength of the impact of development of element j on the peak flow due to current LULC per unit area. R’index: A measure of strength of the impacts of LULC changes on peak flow without considering the area impact. Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  14. Results Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  15. Results Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  16. Conclusion Return period (Tr) ↑ peak flow ↑ Relative impacts of land use change diminish with ↑ Tr , except for A-1. Land use change in A-2 had the biggest contribution to the increased peak flow: R′1yr=34.1% R′10yr=25.2% R′25yr=21.8% R′100yr=16.7% A-1, the most upstream area, had the lowest impact on peak flow. The travel time from A-1 and the non-uniform rainfall distribution cause complex interactions with other areas. Contribution of urbanization in a watershed to peak flow at a downstream point highly depends on its location (in addition to other factors). Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

  17. Thank You ! Changes in Flow Volumes and Peak Flows in response to Land Conversions in the Eight Mile Creek Watershed

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