Stefanie J. Baxter Presented to the Water Supply Coordinating Council September 24, 2009 Summary of Water Conditions in Delaware.

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Presentation transcript:

Stefanie J. Baxter Presented to the Water Supply Coordinating Council September 24, 2009 Summary of Water Conditions in Delaware

Factors Used in Calculating the Index  6-month antecedent precipitation  Flow on the Brandywine River  Groundwater level in well Db24-18  Population of northern NCC Water Conditions Index for NCC August 2008 through August 2009 Drought Watch Drought Warning Drought Emergency Aug-08Sep-08Oct-08Nov-08Dec-08Jan-09Feb-09Mar-09Apr-09May-09Jun-09Jul-09Aug-09

Precipitation at Wilmington August 2008 – August 2009 Data provided by City of Wilmington, DEOS, and NWS Current 12-month running surplus = 1.70 inches Inches Normal Actual

Well Db24-18 Near Ogletown January 2008 – September 2009 Drought Watch = to 14.99' Drought Warning = to 15.99' Drought Emergency = >16.00' Actual September water level = 12.10'

Data Source: /de/nwis/ Brandywine Creek at Wilmington April 1, 2009 – September 21, 2009 Drought Watch = 85 MGD 195 MGD 30-day moving average through September 21, 2009 = MGD

Data Source: /de/nwis/ White Clay Creek near Newark April 1, 2009 – September 21, 2009 Drought Watch = 42 MGD 30-day moving average White Clay at Stanton (filter plant) through September 21, 2009 = MGD 44 MGD

Data provided by Delaware Department of Transportation Precipitation at Dover August 2008 – August 2009 Inches Normal Actual Current 12-month running surplus = 2.55 inches

Well Hb14-01 January 2008 – September 2009 Actual September water level = 8.20' Normal for September is between 6.79' and 9.07'

Modified from: /de/nwis/ St. Jones River at Dover April 1, 2009 – September 21, 2009 Mean flow for September = 20.2 MGD 8.4 MGD 30-day moving average through September 21, 2009 = 51.4 MGD

Data provided by City of Lewes Precipitation at Lewes August 2008 – August 2009 Inches Normal Actual Current 12-month running surplus = 6.21 inches

Well Qe44-01 Near Trap Pond January 2008 – September 2009 Normal for September is between 8.90' and 11.30' Actual September water level = 8.20 '

Nanticoke River near Bridgeville April 1, 2009 – September 21, 2009 Modified from: /de/nwis/ 48 MGD 30-day moving average through September 21, 2009 = 71.1 MGD Mean flow for September = 50.3 MGD