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CW DMAG Update - February 1, 2007 Low Inflow Protocol (LIP) Drought Indicators

The following are the Low Inflow Protocol (LIP) drought indicators as of Febuary 1, 2007:

Storage Indicator (SI): 62.01%
Target Storage Index = 51.65%
Ratio = 120.06% (Supports Normal)

Streamflow Indicator (six-month average versus historical six-month average):

Ratio = 1.46% (Supports Normal)

(*based on approximate data for the Catawba River near Pleasant Gardens, NC gage # 02137727)

US Drought Monitor (three-month average):
Three-month Numeric Average= -1.00 (Supports Normal)

Groundwater Gages:
USGS Langtree current reading = 18.08 ft (Normal)
USGS Linville current reading = 2.13 ft (Stage 1)
NCDWR Glen Alpine reading = 8.15 ft (Stage 0)

The C-W Basin was in a Stage 0 - Low Inflow Watch at the end of December, 2006. All indicators have to recover to move back up to a lower Stage, which they have. In order to move out of a LIP Stage to a lower Stage or Watch or Normal Stage, all groundwater gages need to recover to the lower stage also. The Langtree gage reading has recovered from a Stage 0 to a normal reading, while the Linville gage reading has deteriorated to a Stage 1 reading. The Glen Alpine gage reading remains in a Stage 0 reading. It is possible that the gage readings are indicators of the fact that the last 12 months of rainfall has been below average. Therefore, the LIP will remain in a Stage 0 - Low Inflow Watch.

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