किसी विशेष निकासी क्षेत्र तथा मौसम में, जिसमें हिम गलन मुख्य कारक न हो, आंकलित मानक परियोजन वृष्टि अधिकतम गम्भीर बाढ़ को उत्पन्न करने वाली वृष्टि का प्रतिनिधित्व करता है जो उस क्षेत्र, जहां निकासी बेसिन स्थित है, के विशिष्ट गुणों के अनुसार वर्षा गहराई-क्षेत्र-अवधि सम्बन्ध तथा समवृष्टि मानचित्र के आधार पर होती है।
The standard project storm estimate for a particular drainage area and season of year, in which snow melt is not a major consideration, represent the most severe flood producing rainfall depth-area-duration relationship and isohyetal pattern of any storm that is considered reasonably characteristic of the region in which the drainage basin is located.
The standard project storm estimate for a particular drainage area and season of year, in which snow melt is not a major consideration, represent the most severe flood producing rainfall depth-area-duration relationship and isohyetal pattern of any storm that is considered reasonably characteristic of the region in which the drainage basin is located.
