220 likes | 353 Views
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
E N D
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 Streamflows La Niña and Lake Lanier
Big Picture – Past to Current Conditions Trends in Winter Rainfall for Georgia Rainfall Accumulations Dec-Feb
Big Picture – Past to Current Conditions Trends in Spring Rainfall for Georgia Rainfall Accumulations Feb-Apr
Big Picture – Past to Current Conditions Trends in Summer Rainfall for Georgia Rainfall Accumulations May-Jul
Big Picture – Past to Current Conditions Trends in Summer Temperature for Georgia Average Temperature Jun-Aug
Big Picture – Past to Current Conditions Trends in Tropical Rainfall for Georgia Rainfall Accumulations Aug-Oct Frances, etc Sept ATL Floods Alberto
Big Picture – Past to Current Conditions Trends in Autumn Rainfall for Georgia Rainfall Accumulations Sep-Nov
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
La Niña and Past Georgia Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows
Apalachicola Watershed
La Niña and Past Apalachicola Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows
La Niña and Past Apalachicola Streamflows * Note: Streamflow % based on USGS Historical Runoff Values that are derived from streamflows
La Niña and Lake Lanier Inflows * Note: Inflows based on data from the Corps Of Engineers calculated inflow values
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