वह वक्र जो जलाशय के प्रचालन के लिए इस्तेमाल किया जाता है ताकि भूतकाल के अनुभवों के आधार पर भविष्य में अच्छे परिणाम प्राप्त किये जा सकें तथा जलाशय के उपयोग के उद्देश्यों की अधिकतम प्राप्ति की जा सके।
A curve devised to indicate operation of a reservoir so as to obtain the best results based on past experience and to be applied to future operation with a view to attain best use of the reservoir for its intended purposes.
A curve devised to indicate operation of a reservoir so as to obtain the best results based on past experience and to be applied to future operation with a view to attain best use of the reservoir for its intended purposes.