Tulbul Navigation project was built on which lake ........

Explanation:

The Tulbul Project is a "navigation lock-cum-control structure" at the mouth of Wular Lake. According to the original Indian plan, the barrage was expected to be of 439 feet (134 m) long and 40 feet (12 m) wide, and would have a maximum storage capacity of 300,000 acre⋅ft (370×106 m3) of water. One aim was to regulate the release of water from the natural storage in the lake to maintain a minimum draught of 4.5 feet (1.4 m) in the river up to Baramulla during the lean winter months. The project was conceived in the early 1980s and work began in 1984. The average annual inflows or outflows from the lake is nearly 7 billion cubic meters

There has been an ongoing dispute between India and Pakistan over the Tulbul Project since 1987, when Pakistan objected that it violated the 1960 Indus Waters Treaty (IWT).