Shimla, April 8, 2026
In a significant environmental ruling, the High Court of Himachal Pradesh has issued stringent directions regulating desilting operations at the Shanan Hydroelectric Project in Barot, holding that unscientific discharge of silt into the Uhl River has caused serious ecological damage, including fish mortality and degradation of a nationally important trout habitat.
The Division Bench comprising Chief Justice G.S. Sandhawalia and Justice Bipin Chander Negi, while deciding CWPIL No. 01 of 2025 (Court on its own motion vs. State of Himachal Pradesh & Others), emphasized that economic considerations of hydropower generation cannot override environmental protection and aquatic life.
Court Recognizes Ecological Crisis
The Court recorded that trout in the Uhl River were effectively “caught in a sandstorm of silt,” unable to breathe or reproduce due to high turbidity levels. It noted that the river, a designated cold-water trout habitat, had suffered repeated ecological stress due to desilting activities carried out during the critical breeding season (November–February).
Referring to earlier proceedings in CWPIL No. 57 of 2018, the Bench observed that despite explicit undertakings and judicial directions prohibiting unscientific dumping of silt, the project authorities had continued similar practices in 2024–25. The Court found this to be a clear violation of prior orders and expert recommendations.
Findings on Violations and Environmental Harm
The judgment highlights multiple regulatory and ecological breaches:
• Desilting was conducted during the trout breeding season, contrary to expert committee recommendations and statutory protections under the Himachal Pradesh Fisheries Act.
• Total Suspended Solids (TSS) levels downstream rose drastically from 3 mg/L upstream to 2812 mg/L, far exceeding permissible limits (100 mg/L), indicating severe pollution.
• Minimum environmental flow (15%) mandated by the National Green Tribunal was not maintained, leading to drying of river stretches and obstruction of fish migration.
• Authorities failed to inform or coordinate with key departments such as Fisheries and Pollution Control Board before undertaking desilting.
The Court held that these actions reflect systemic non-compliance and disregard for environmental safeguards.
Application of Polluter Pays Principle
Invoking established environmental jurisprudence, including M.C. Mehta v. Kamal Nath and subsequent Supreme Court rulings, the Court reiterated that entities causing ecological damage are liable to compensate for restoration.
It upheld the imposition of environmental compensation of ₹12 lakh on the project proponent and further directed that the amount be utilized for ecological restoration, including restocking of trout species in the affected river stretches.
Key Directions Issued by the Court
To prevent recurrence of such environmental harm, the Court issued a comprehensive set of directions:
• Seasonal Restriction: Absolute prohibition on desilting operations before March 1 each year, thereby protecting the trout breeding period.
• Real-Time Monitoring: Mandatory installation of sensors to monitor TSS levels and water quality at the desilting site and downstream locations.
• Environmental Flow Compliance: Strict enforcement of minimum 15% water release during lean seasons, subject to inspection by the Fisheries Department.
• Institutional Oversight: Constitution of a River Monitoring Committee under the Deputy Commissioner with representation from Fisheries, Electricity Department, and project authorities.
• Ecological Restoration: Directed restocking of Brown and Rainbow Trout using compensation funds, with periodic reporting to the Court.
The Bench also made it clear that failure to comply with these directions would attract further legal consequences.
Balancing Development and Ecology
The Court underscored that the environmental damage was partly attributable to the project authorities’ failure to undertake periodic desilting over the years, leading to excessive accumulation and subsequent “knee-jerk” large-scale flushing.
Rejecting the justification that desilting must be done in the lean season to avoid power generation losses, the Court held that “economic consideration will not prevail over environmental rights.”
Proceedings to Continue for Monitoring Compliance
The matter has been listed for further compliance review on July 31, 2026. The Court has directed the authorities to file a detailed compliance affidavit before the next hearing.
Significance of the Judgment
This ruling is likely to have wider implications for hydroelectric projects across Himachal Pradesh and other hill states. By mandating scientific sediment management, real-time monitoring, and strict adherence to ecological safeguards, the Court has reinforced the principle that river ecosystems—especially fragile cold-water fisheries—cannot be compromised for short-term operational convenience.
The judgment also strengthens the enforcement of environmental flow norms and underscores the accountability of project proponents under pollution control and fisheries laws.
Overall, the decision marks a decisive judicial intervention aimed at restoring ecological balance in the Uhl River and ensuring that hydropower operations align with environmental sustainability and statutory compliance.
LawUmbrella 