From the hills to the Indus

The Haro River is a tributary of the Indus in northern Pakistan. A World Bank environmental assessment describes its headwaters near Nathia Gali, its westward course and its junction with the Indus near Gariala. Smaller streams and seasonal channels feed the catchment. The river connects a hill environment with areas farther downstream, and its flow varies with weather and water management. The assessment is a document prepared for a particular project and period, so its measurements should be read as historical observations rather than assumed to describe every season today. The river crosses a landscape of settlements, farmland and infrastructure.[1]

Khanpur Dam

Pakistan’s Water and Power Development Authority describes Khanpur Dam as an earth-and-rockfill dam on the Haro, commissioned in 1984 for municipal and irrigation supply. A dam stores and redirects water, linking an upstream catchment with users who may live outside it. The authority’s annual report gives an institutional account of the project and its purposes; storage, releases and demand can vary over time. The reservoir is a prominent feature of the river’s modern history, but it is not the river’s source. Assessing its effects also requires attention to downstream communities and the changing quantity of water entering the reservoir.[2]

Modelling the catchment

Saima Nauman and colleagues modelled potential climate effects on flows in the Haro watershed upstream of Khanpur Dam. Their 2019 study used a hydrological model with projections from one climate model under two emissions scenarios. The authors noted that relying on one climate model leaves uncertainty and recommended a wider range of projections in future work. They also reported gaps in local weather and flow observations. The study’s scenarios are conditional estimates, not measurements of future river flow. They help frame questions for water planning while showing why additional observations and comparisons between models matter for the catchment.[3]

Sources & notes

Source records include access dates and, where known, limits on what was examined. Checks used AI assistance; independent human or specialist review has not been completed.

  1. World Bank. Environmental assessment: Indus and Haro rivers ↗Written source · Source date: publication date not established · Locator: Haro river catchment description, indexed text. Accessed 2026-11-04.Indexed World Bank assessment passage checked for headwaters and confluence; PDF exceeded the web reader size limit.Return to From the hills to the Indus, paragraph 1 ↑
  2. Water and Power Development Authority, Pakistan. Annual Report 2022–23 ↗Written source · Source date: 2023 · Locator: Completed water projects table: Khanpur Dam, indexed text. Accessed 2026-11-04.Indexed WAPDA annual report table checked for dam type, 1984 completion and water uses; direct PDF timed out.Return to Khanpur Dam, paragraph 1 ↑
  3. Saima Nauman, Zed Zulkafli, Abdul Halim Bin Ghazali and Badronnisa Yusuf. Impact Assessment of Future Climate Change on Streamflows Upstream of Khanpur Dam, Pakistan using Soil and Water Assessment Tool ↗Written source · Source date: 2019 · Locator: Water 11(5), article 1090: abstract, methods and conclusions on data and model uncertainty. Accessed 2026-11-04.Publisher-hosted paper inspected for the climate scenarios, model limitations and observations. Replaces a 2016 journal PDF that returned 404.Return to Modelling the catchment, paragraph 1 ↑
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Record PH-PLA-0190 · English edition · human review not performed