Sometimes due to encroachment, sometimes due to silting, the inflow of water into reservoirs and other water bodies gets blocked. As a result, the reservoirs store much less water than their capacity.
कधी कधी अतिक्रमणामुळे, कधी मार्ग अरुंद झाल्यामुळे, अडथळे आल्यामुळे येणाऱ्या जलप्रवाहात बाधा आल्यामुळे जलाशयात क्षमतेपेक्षा कमी जलसंचय होतो.