Agenda - 06-16-2009 - - Laserfiche WebLink

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Orange County water supply reservoir water levels Available information as of 2:00 PM, Thursday, June 11, 2009 Lake Orange • Water level is full and spilling • Water storage capacity is at 100% (475 million gallons) • Approximately 141 days of water supply remaining (at Capacity Use specified release rate). • The Hillsborough gage indicates that current Eno River flows are at approximately 101 cfs (65.3 mgd). This flow represents a level that is approximately 500% of the historical median flow level (19 cfs) for this day of the year. • At this time of year, seasonal rains have ended and there is very little base flow to the Eno. How late in the year Capacity Use restrictions and manual releases from the reservoirs are initiated is based on the hit or miss nature of the thunderstorms which break up the 7-day low flow (below 10 cfs daily average) period that triggers the maximum withdrawal and minimum stream flow requirements. The flow in the Eno has been well above the 10 cfs level for the last week as a consequence of these thunderstorms. Absent another fairly significant rainfall event, instream flows are expected to exceed 10 cfs for another week with releases from Lake Orange projected to begin within two weeks afterwards. • Orange Alamance continues the operation of its water plant five days a week (Monday- Friday) with average withdrawals of 300,000 gallons per day. West Fork Reservoir (as last reported 5/26/2009) • Water level is full and spilling • Water storage capacity remaining is 100 • Approximately 378 days of water supply remaining (assuming Town's current 30 day average water consumption rate (1.07 mgd). OWASA Reservoirs (as last reported 6/11/2009) • Water level at Cane Creek Reservoir is full. • Water level at University Lake is full. • Total remaining water storage capacity is approximately 100% (3.56 billion gallons) • Approximately 453 days of water supply remain with no additional rainfall (at the current 30- day average daily demand [7.86 million gallons per day]) • OWASA's year-round water conservation requirements are in effect National Weather Service/NOAH Regional Precipitation data (through 6/10/2009) finches above ~+1 or below f-1 normal) RDU +0.63" since June 1, 2009 -0.65" since January 1, 2009 Miscellaneous notes Piedmont-Triad +2.42" since June 1, 2009 -0.09" since January 1, 2009 The NC Drought Management Advisory Council drought map, last updated June 9, 2009, indicates that all of Orange (and all surrounding counties) County lies within the area of the state characterized as experiencing no abnormally dry weather or drought conditions.