Orange County NC Website
Browse       Search
Revised July 1990 <br />~~ <br />Table 1 <br />riarslmi;u'T'i Allowable Si.itface i~iater witiidrawais <br />Based on Lake Orange Level <br />Drawdown Allowable Surface Water Withdrawal <br />Percent of <br /> <br />Storage <br />Remaining at <br />Lake Orange in feet <br /> <br />from top <br />of 1-ft. <br />flashboard --------gallons er da <br />P Y----------- <br /> <br />Town of Orange- Piedmont <br />Hillsborough Alamance Minerals <br /> <br /> <br />nstream Flow <br />Requirement <br />> 100 spilling * * ** 1 100 000 <br />100 - 80 0.0 1,510,000 820,000 430,000 1,100,000 <br />80 - 60 2.0 1,360,000 740,000 380,000 650,000 <br />60 - 50 4.3 1,280,000 700,000 360,000 450,000 <br />50 - 40 5.8 1,280,000 700,000 320,000 450,OOG <br />40 - 30 7.4 1,130,000 620,000 190,000 0 <br /><= 30 9.3 680,000 370,000 0 0 <br />Notes: <br />* - Adjusted to reflect outside source agreement for Hillsborough and Orange-Alamance <br />- Excess withdrawals from Eno River based on outside source agreement may be made when <br />flows at the Eno River at Hillsborough Gage are 10 cubic feet per second (cfs) and <br />above, regardless of the water level in Lake Orange. Maximum withdrawals shall be <br />limited to the total of the contract amount and the allocated amount. <br />- A low flow period will begin on the 7th consecutive day of the average daily flow at <br />the Hillsborough Gage dropping below 10 cfs. On the 4th day, the Orange County <br />Engineer will request that affected parties prepare for a low flow period. <br />- When flows are between 10 cfs and 3 cfs at the Hillsborough Gage during a low flow <br />period, withdrawals from the Eno River shall be limited to the 100-80 percent of <br />storage remaining amount shown above, regardless of water level in Lake O.r_ange. <br />- When flows are below 3 cfs at the Hillsborough Gage during a low flow period, <br />withdrawals shall be limited to amounts shown above for percent of storage remaining <br />at La]:e 0~ :rge . <br />- A low flow period will be terminated when average daily flocs at the Hillsborough Gage <br />registers 10 cfs or greater for a period of•7 consecutive days. The Orange County <br />Engineer will notify affected parties when the low flow period is terminated. <br />** - For Piedmont Minerals Inc.: When flows at the Hillsborough gage are 14 cfs and above, <br />withdrawals from the Eno River will be limited to 900,000 gallons per day (gpd). <br />Between 14 cfs and 4 cfs, withdrawals will be limited to 430,000 gpd, regardless of <br />water level in Lake Oranae. Below 4 cfs, withdrawals will be limited to a.*ro~:nts <br />shown above for percent of storage remaining. <br />