Chashma Barrage

As of October 26, 2026, Chashma Barrage is filled to 68.4% of its total capacity, holding 262.3 hm³ of water out of a maximum 383.6 hm³. At this level the reservoir is within its normal operating range.

Over the most recent week on record the fill level has risen by 12.3 percentage points.

Across the readings we hold for Chashma Barrage — 161 data points between May 18, 2026 and October 26, 2026 — the level has ranged from a low of 8.9% (June 26, 2026) to a high of 91.6% (July 30, 2026). On average the reservoir is fullest around August and at its lowest around May.

The dam at Chashma Barrage stands 15 m tall and is a barrage dam and was completed in 1971. It is operated by WAPDA primarily for irrigation. It lies within the Indus basin at 32.452°N, 71.386°E.

Chashma storage is WAPDA's daily usable storage above the 638.15 ft minimum operating level, converted the same way as Tarbela. Fill is the usable volume divided by 0.311 million acre-feet (383.6 hm³), the live storage capacity APP reports from WAPDA beside Tarbela's 5.580 million acre-feet (https://www.app.com.pk/national/govt-speeds-up-work-to-add-8-maf-water-storage-through-four-mega-dams/). WAPDA's own Chashma page still shows the 2012 hydrographic survey, 0.3482 million acre-feet gross (https://wapda.gov.pk/chashma-hydel-power/), which is not this denominator. The 1 September 2026 wire gives 0.285 million acre-feet at 648.50 ft, half a foot under the 649 ft maximum (https://www.urdupoint.com/daily/livenews/2026-09-01/news-4927488.html). Levels below 640.40 ft, the lowest published pair, continue that segment's slope. The previous series was gross volume on a straight line from 30 hm³ at 638.15 ft to 261 hm³ at 649 ft, with 231 hm³ called live. It is retired. The 24 and 25 October readings are the same APP wires as Tarbela: 647.40 ft and 0.230 million acre-feet, then 647.10 ft and 0.217 million acre-feet.