Item - Agenda w-Hillsborough 03-22-2004

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Table 1 Maximum Allowable Surface Water Withdrawals Based on Lake Orange Level Drawdown Allowable S.irface Water Wi `hdrawal Percent of in feet -- - - - - -- gallons per Storage from from top Remaining at of 1 -ft. Town of Orange- Piedmont Instream Flo Lake Orange flashboard Hillsborough Alamance Minerals Reouireme. > 100 spilling * * ** 1,100,00o 100 - 80 0.0 lr6401000 690,000 430,000 1,100,000 80 - 60 2.0 11480,000 620,000 380,000 650,000, 60 - 50 4.3 11390,000 590,000 360,000 450,000 50 - 40 5.8 1,3901000 590,000 ; 320,000 450100: 40 - 30 7.4 11230,000 520,000 190,000 0 <= 30 9.3 740,000 3101000 0 0 notes: * - adjusted to reflect outside source agreement. for Billsborough and Orange- Alamance. - Excess withdrawals from Eno River based on outside source agreement can be made when flows at Hillsborough Gage are 10 cfs and above, regardless 'of water level in Lake Orange. haximum withdrawals will be limited to the total of the contract amount and the allocated amount. - When flows are between 10 cfs and 3 cfs at the Hills- borough Gage, withdrawals from the Eno River will be limited to the 100 -80 percent of storage remaining amount- shown above, regardless of water level in Lake Orange. - When flows are less than 3 cfs at the Hillsborough Gage, withdrawals will be limited to amounts shown above for percent of storage remaining. ** - For Piedmont Minerals Inc: When flows at the Hillsborough gage are 14 cfs and above, withdrawals from the _no Rive will be limited to 900,000 gallons per day (gpd) . Between 14 cfs and and 4 cfs, withdrawals will be limited to 430,000 gpd, regardless of water level in Lake-Orange.- Below 4 cfs, withdrawals will be limited to amounts shown above for percent of storage remaining.