Agenda - 04-18-1989 - Laserfiche WebLink

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., . . • , , . _ . 6 • Mr. Link . • Page 3 December 12, 1988 • operators of the impoundement and monitoring system, the automatic release gate systems, the telemetry system at each monitoring system and the upstream flow monitoring at each impoundment could be eliminated. The metering of flow release at each impoundment and the totalized flow metering at the existing flow monitoring station are essential and cannot be eliminated. Operation of the Eno system would then involve the close cooperation of Orange County, the Hillsborough water system and the Orange Alamance System. Each impoundment would keep a release gate partially opened as required to release the minimum flow which would be visually/manually monitored at each downstream metering station. _ The totalized flow would monitored at the existing monitoringstation. Any shortfall at this station would be compensated for when it was discovered. The advantages to this system are twofold: 1 ) each impoundment owner would control its own impoundments releases and 2) the associated . costs of construction and system upkeep would be drastically reduced. The disadvantages to this type of system would be threefold: 1 ) coordination would need to be nearly perfect with instantaneous compliance to release requirements 2) two men in radio contact would be required for each release adjustment at each impoundment in with several adjustments being required in each 24 hour period and 3) accurate flow rate reading just upstream of Corporation Lake and Lake Ben aohnston would mean that flow from the additional tributary areas for each lake would not be accounted. for, possibly resulting in excess flow releases from Corporation Lake and Lake Orange. • The monitoring program for the Eno River is an important , . responsibility for Orange County, but it is a responsibility , . that carries few rewards and many liabilities. Without the minimum levels of system accuracy and without the utmost cooperation from the system's beneficiaries, monitoring cannot reasonably be expected to accomplish its goals of _ conserving water and meeting minimum stream flow requirements Failure to meet the stream flow requirements will cause intervention by the State which may entail fines to ensure I • minimum stream flow compliance. FailUTe to conserve the maximum amount of water in the attempt to meet the stream _ • 1 flow requirements may also result in severe hardships and ill will . If adequate controls for monitoring and controlling the Eno system cannot be established, Orange County will find itself in a no win situation in regard to the Eno monitoring agreement responsibility, and I, as the County Engineer, could not recommend that Orange County accept that responsibility. 1 1 1 1 .