The
Ottu barrage (
Hindi: ओटू वीयर or ओटू हैड), sometimes spelled as the
Otu barrage and also known as
Ottu Head, is a masonry
weir on the
Ghaggar-Hakra River in
Haryana state of
India that creates a large water reservoir out of the formerly-small Dhanur lake, located near the village of
Ottu, which is about 8 miles from
Sirsa in Haryana. It is a feeder for the two Ghaggar canals (the Northern Ghaggar canal and the Southern Ghaggar canal) that carry irrigation water to northern
Rajasthan state. In 2002, a new tourist complex was inaugurated at the barrage, and it was given the honorary name of "
Chaudhary Devi Lal Weir" to commemorate the former
Chief Minister of Haryana state,
Chaudhary Devi Lal. The Dhanur lake reservoir is now often referred to simply as the
Ottu reservoir (ओटू झील).