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Jeff Dobur Senior Hydrologist Southeast River Forecast Center NOAA - National Weather Service

Jeff Dobur Senior Hydrologist Southeast River Forecast Center NOAA - National Weather Service. Water Supply. Implications of the Seasonal Outlook for ACF. Big Picture – Past to Current Conditions Early Winter – Ensemble Streamflow Forecasts La Niña and Past S treamflows

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Jeff Dobur Senior Hydrologist Southeast River Forecast Center NOAA - National Weather Service

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  1. Jeff Dobur Senior Hydrologist Southeast River Forecast Center NOAA - National Weather Service

  2. Water Supply Implications of the Seasonal Outlook for ACF Big Picture – Past to Current Conditions Early Winter – Ensemble Streamflow Forecasts La Niña and Past Streamflows La Niña and Lake Lanier

  3. Big Picture – Past to Current Conditions Trends in Winter Rainfall for Georgia Rainfall Accumulations Dec-Feb

  4. Big Picture – Past to Current Conditions Trends in Spring Rainfall for Georgia Rainfall Accumulations Feb-Apr

  5. Big Picture – Past to Current Conditions Trends in Summer Rainfall for Georgia Rainfall Accumulations May-Jul

  6. Big Picture – Past to Current Conditions Trends in Summer Temperature for Georgia Average Temperature Jun-Aug

  7. Big Picture – Past to Current Conditions Trends in Tropical Rainfall for Georgia Rainfall Accumulations Aug-Oct Frances, etc Sept ATL Floods Alberto

  8. Big Picture – Past to Current Conditions Trends in Autumn Rainfall for Georgia Rainfall Accumulations Sep-Nov

  9. Big Picture – Past to Current Conditions Trends in Recharge Rainfall for Lake Lanier Rainfall Accumulations Dec-Mar for Climate Division 2 and 3 Climate Division 2 Climate Division 3

  10. La Niña and Past Georgia Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows

  11. Apalachicola Watershed

  12. La Niña and Past Apalachicola Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows

  13. La Niña and Past Apalachicola Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows

  14. Georgia Reservoirs

  15. La Niña and Lake Lanier Inflows * Note: Inflows based on data from the Corps Of Engineers calculated inflow values

  16. La Niña and Lake Lanier Inflows

  17. La Niña and Lake Lanier Inflows

  18. La Niña and Lake Lanier Inflows

  19. La Niña and Lake Lanier Inflows

  20. La Niña and Lake Lanier Inflows

  21. La Niña and Lake Lanier Inflows

  22. Conclusion: • Last several years…deficits in rainfall during recharge period into Summer accentuating water resource concerns • La Niña typically means lower streamflows and lower inflows in Lake Lanier but not always (likely but not 100%) • Water Supply Issues of obvious concern into 2011

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