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CW DMAG Update - April 15, 2009

The following are the Low Inflow Protocol (LIP) drought indicators as of April 15, 2009:


April 15, 2009
Current Overall Stage 1
Storage Index (SI): 79.7%
Target Storage Index 70.2%
Ratio 113.5 % (Supports Normal Conditions)

Streamflow Indicator
(six-month average versus historical six-month average)
Ratio= 69.5 % (Supports Stage 1) 
US Drought Monitor (three-month average)
Three-month Numeric Average = +1.33 (Supports Stage 1)

Trend Data
Date Ratio
February 29, 2008 34.1%
March 28, 2008 40.9%
April 25, 2008 44.8%
May 29, 2008 45.9%
June 27, 2008 45.6%
July 25, 2008 46.1%
August 29, 2008 49.5%
September 26, 2008 51.6%
October 31, 2008 51.5%
November 21, 2008 51.2%
December 15, 2008 51.6%
January 9, 2009 67.5%
February 2, 2009 68.1%
March 3, 2009 59.1%
April 6, 2009 65.2%
Groundwater Gages
(feet below surface) USGS Langtree
Date Reading
USGS Langtree current 19.78 ft
February 29, 2008 22.83 ft
March 28, 2008 21.72 ft
April 25, 2008 21.72 ft
May 29, 2008 21.30 ft
June 27, 2008 22.03 ft
July 25, 2008 22.78 ft
August 29, 2008 22.81 ft
September 26, 2008 22.47 ft
October 31, 2008 23.27 ft
November 21, 2008 23.42 ft
December 15, 2008 22.73 ft
January 9, 2009 21.84 ft
Februry 2, 2009 21.30 ft
March 3, 2009 21.18 ft
April 6, 2009 20.02 ft

Groundwater Gages
(feet below surface)USGS Linville
Date Reading
USGS Linville current 2.07 ft
February 29, 2008 2.19 ft
March 28, 2008 2.16 ft
April 25, 2008 2.19 ft
May 29, 2008 2.19 ft
June 27, 2008 2.34 ft
July 25, 2008 2.45 ft
August 29, 2006 2.16 ft
September 26, 2008 2.41 ft
October 31, 2008 2.28 ft
November 21, 2008 2.21 ft
December 15, 2008 2.10 ft
January 6, 2009 2.00 ft
February 2, 2009 2.00 ft
March 3, 2009 2.07 ft
April 6, 2009 2.03 ft 
Groundwater Gages
(feet below surface) Glen Alpine
Date Reading
Glen Alpine current 7.96 ft
February 27, 2008 8.71 ft
March 26, 2008 8.40 ft
April 30, 2008 8.53 ft
May 29, 2008 9.16 ft
June 25, 2008 10.02 ft
July 30, 2008 10.59 ft
August 29, 2008 10.64 ft
September 26, 2008 10.46 ft
October 31, 2008 10.07 ft
November 21, 2008 9.96 ft
December 15, 2008 9.14 ft
January 9, 2009 8.43 ft
Febraury 2, 2009 8.97 ft
March 3, 2009 8.15 ft
April 6, 2009 7.96 ft