Unplanned urbanisation and land-value pressures are the biggest threats to India's urban water bodies. Discuss with examples.

The Wetlands (Conservation and Management) Rules, 2017 expressly prohibit encroachment, permanent construction and waste dumping in wetlands [2]; yet urban lakes keep shrinking. The decisive threat is not water use but land — unplanned outward growth and a land-value premium that makes a lakebed worth more dry than wet — though pollution and weak enforcement magnify it.

Unplanned urbanisation squeezes the catchment

• Cities expand without enforceable land-use plans, so catchments and interconnecting channels are built over and lakes lose their natural inflow.
• NDMA records large-scale encroachment on natural drains and river floodplains, while urbanisation raises flood peaks 1.8–8 times and flood volumes up to six times [1].
• Storm-water drains designed for only 12–20 mm rainfall intensity are quickly overwhelmed [1] — visible in the Chennai (2015) and Bengaluru (2022) urban floods.

Land-value pressures convert water into real estate

• Peri-urban lakebeds are treated as "vacant land" by developers and municipal bodies; high land prices make conversion profitable and eviction politically costly.
• NGT proceedings document encroachment into water bodies during development projects, and illegal construction obstructing channels interlinking ponds [5].
• Debris and solid-waste filling becomes a cheap route to manufacture titled land, as in NGT's directions on Hokersar wetland and Wular lake in Jammu & Kashmir [5].

Other threats, though secondary

• Untreated sewage and industrial effluent cause eutrophication, killing lakes whose boundaries survive intact — discharges the 2017 Rules already ban [2].
• Institutional gaps persist: NLCP (2001) was merged into the NPCA in 2013, but execution rests with State Wetlands Authorities and municipalities [3][2].
• The pressure is structural, not uniquely Indian — about 85% of the world's 1700-era wetlands were lost by 2000, disappearing three times faster than forests [4].

Encroachment is thus a planning and incentive failure, not merely a pollution problem. Treating lakes as ecological infrastructure — through ground-truthed boundary demarcation under the 2017 Rules, catchment-level master plans, and blue-green zoning in city development plans — can restore their flood-buffering and recharge roles, advancing SDG-6 and SDG-11.