<p>LAHORE: While a vast area of Punjab, covering nearly 400 square kilometres, has come under water following ongoing torrential rains and the overflow of several drains carrying water far beyond their designed capacity, the Chenab and Ravi rivers are expected to reach <a href="https://www.dawn.com/news/2017935">medium</a> to high flood levels over the next 24 hours.</p>
<p>The warning at a time when the flooding has already caused widespread damage to standing crops, livestock and infrastructur