Western Australia’s storages are 90.9% full (10,438 GL of 11,487 GL), up 0.1 points in a week; a year ago the same 20 storages were 84.4% full.
25 storages reporting to the Bureau of Meteorology, latest reading 2026-09-27 09:00. Refreshed every 30 minutes.
This table gathers the Western Australian storages in the Bureau of Meteorology’s list, from Perth’s hills dams and the irrigation dams around Harvey and Collie to Harding Dam in the Pilbara and Lake Argyle on the Ord River. Below it you will find who runs each group, what the Bureau’s percentage includes and leaves out, and which of these lakes are open to trout anglers and marron fishers under DPIRD’s rules.
Percentage full is the Bureau’s accessible volume divided by the accessible capacity, as on its storage dashboard, so it can differ by a point or two from the operator’s daily report, which is the official figure. Year ago is the same storage on the same date last year. Dams with a fishing page link to it.
| Storage | Full | Volume (ML) | Capacity (ML) | 7 days | Year ago | Updated | Fishing |
|---|---|---|---|---|---|---|---|
| Lake Argyle (Argyle Dam, Ord River)South West and regional dams (Water Corporation) | 95.7% | 9,986,830 | 10,436,000 | — | 88.1% | 16 Sept | Lake Argyle fishing report |
| Wellington DamSouth West and regional dams (Water Corporation) | 43.0% | 79,140 | 183,888 | +0.2 pts | 56.4% | 23 Sept | Wellington Dam fishing report |
| Harris DamSouth West and regional dams (Water Corporation) | 14.6% | 10,293 | 70,460 | +0.0 pts | 21.5% | 23 Sept | — |
| Harding DamSouth West and regional dams (Water Corporation) | 79.6% | 50,508 | 63,470 | — | 20.8% | 24 Sept | No public fishing |
| Harvey DamSouth West and regional dams (Water Corporation) | 60.6% | 33,696 | 55,630 | — | 78.4% | 21 Sept | Harvey Dam fishing report |
| Logue Brook DamSouth West and regional dams (Water Corporation) | 56.5% | 12,044 | 21,320 | +0.1 pts | 66.2% | 23 Sept | Logue Brook Dam fishing report |
| Waroona DamSouth West and regional dams (Water Corporation) | 32.5% | 4,918 | 15,132 | +0.4 pts | 40.3% | 23 Sept | Waroona Dam fishing report |
| Kununurra Diversion Dam (Lake Kununurra)South West and regional dams (Water Corporation) | 42.5% | 5,871 | 13,800 | — | — | 21 Sept | Lake Kununurra fishing report |
| Drakes Brook DamSouth West and regional dams (Water Corporation) | 92.1% | 2,108 | 2,290 | +1.0 pts | 89.5% | 23 Sept | Open to fishing |
| Glen Mervyn DamSouth West and regional dams (Water Corporation) | 61.2% | 1,254 | 2,049 | +1.1 pts | 75.9% | 23 Sept | Open to fishing |
| Moochalabra DamSouth West and regional dams (Water Corporation) | 79.0% | 1,457 | 1,845 | −1.1 pts | 79.3% | 27 Sept | — |
| Ten Mile Brook DamSouth West and regional dams (Water Corporation) | 81.2% | 1,328 | 1,635 | +1.4 pts | — | 25 Sept | — |
| Manjimup DamSouth West and regional dams (Water Corporation) | 68.4% | 1,075 | 1,572 | −0.6 pts | — | 25 Sept | — |
| Quickup DamSouth West and regional dams (Water Corporation) | 96.2% | 1,038 | 1,079 | — | — | 22 Sept | — |
| Serpentine DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 32.5% | 44,401 | 136,660 | +0.1 pts | 33.6% | 26 Sept | No public fishing |
| South Dandalup DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 9.4% | 11,801 | 125,060 | −0.1 pts | 10.4% | 26 Sept | No public fishing |
| Canning DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 63.3% | 57,178 | 90,290 | −0.7 pts | 70.1% | 26 Sept | No public fishing |
| North Dandalup DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 58.0% | 42,835 | 73,830 | −0.4 pts | 69.5% | 26 Sept | No public fishing |
| Mundaring WeirPerth and the Integrated Water Supply Scheme (Water Corporation) | 36.6% | 21,017 | 57,420 | +0.1 pts | 51.5% | 26 Sept | No public fishing |
| Wungong DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 47.3% | 26,669 | 56,370 | +2.2 pts | 55.0% | 26 Sept | No public fishing |
| Stirling DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 50.8% | 28,236 | 55,600 | — | 62.7% | 21 Sept | No public fishing |
| Victoria DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 78.0% | 7,345 | 9,413 | −0.9 pts | 85.1% | 26 Sept | No public fishing |
| Samson Brook DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 59.5% | 4,701 | 7,899 | +0.9 pts | 75.2% | 23 Sept | No public fishing |
| Churchman Brook DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 46.5% | 1,023 | 2,200 | +0.5 pts | 60.7% | 26 Sept | No public fishing |
| Serpentine Pipehead DamPerth and the Integrated Water Supply Scheme (Water Corporation) | 77.3% | 1,670 | 2,160 | +5.4 pts | — | 26 Sept | No public fishing |
Among storages of 5 GL or more.
90% and over60–90%30–60%under 30%no capacity published
Combined accessible volume of the 25 storages with a published capacity, as a percentage of their combined capacity, one value a day.
Every Western Australian storage in the Bureau’s list is supplied by Water Corporation, and the Bureau sorts them into groups. Eleven make up the Perth supply system, which has its own page on this site. Four form the Harvey group: Harvey, Logue Brook, Waroona and Wellington. Two sit on the Ord River in the Kimberley, Argyle and the Kununurra Diversion Dam. The rest stand alone, among them Drakes Brook, Glen Mervyn, Harris, Manjimup and Ten Mile Brook in the South West, Quickup in the Great Southern, Harding in the Pilbara and Moochalabra in the Kimberley. Water Corporation’s own dam levels page is arranged differently, in five regional totals: Metro, South West, Great Southern, Mid West and North West. Its South West tab runs to twenty-one dams, among them small dams such as Balingup, Kirup and Quinninup, and its Great Southern tab lists more than twenty more, from Denmark and Kojonup to Lake Grace and Ravensthorpe, most of which the Bureau does not publish. The corporation reads a number of its regional dams by hand every two to three days, so their figures update when a reading comes in rather than daily.
Several of the South West rows are irrigation storages rather than town supplies. Harvey Water, the trading name of the South West Irrigation Management Cooperative, is a self-funded cooperative that delivers non-potable water to its members and customers from a base about 100 kilometres south of Perth. It draws from local dams under a licensing agreement with the Department of Water and Environmental Regulation and moves the water by gravity through channels and pipes to the Harvey, Waroona and Collie River districts. The Harvey Water Irrigation Area covers 112,000 hectares from Waroona in the north to Dardanup in the south, and the assets it is licensed to draw from are Wellington Dam, Drakesbrook Weir, Waroona Dam, Logue Brook, Harvey Dam and the Wokalup Pipe-head. Water Corporation describes Wellington Dam, on the Collie River, as unsuitable for drinking, used mostly for irrigation and managed by Harvey Water. Harvey Dam is different again: Water Corporation calls it a protected drinking water source, yet it is also one of the corporation’s dams where licensed anglers may fish. Two dams in the Harvey area, Stirling and Samson Brook, are counted with Perth, and the Bureau credits most but not all of their water to the city.
Every percentage in this table is the Bureau’s: accessible volume, the water above a storage’s lowest outlet, over accessible capacity. Water Corporation’s dam pages work from gross volume and gross capacity, and the Bureau’s note on its data records that dead storage is part of the corporation’s volumes, so for a part-full dam the corporation’s percentage is usually the higher of the two. For most WA storages the difference is a fraction of a point. It grows where much of a dam lies below the outlet, as at South Dandalup, which the Bureau lists at 138,000 megalitres in total and 125,060 accessible, or Mundaring. At North Dandalup the cause is the capacity itself, since the full volume implied by Water Corporation’s own figures, by our arithmetic, is well below the Bureau’s. Kununurra Diversion Dam is a special case. Only 13,800 of its 100,800 megalitres count as accessible, and the federal environment department describes Lake Kununurra’s water level as consistent. With the Bureau’s surface area of about 15 square kilometres, a rise or fall of one centimetre shifts that percentage by roughly one point, by our arithmetic, so small movements in the lake can look large in the table. Scale matters as well. The Bureau gives Lake Argyle an accessible capacity of 10,436,000 megalitres, which by our arithmetic is about 91 per cent of the accessible capacity of every WA storage in its list put together, so any statewide percentage is close to a reading of Lake Argyle alone and says little about Perth or the South West. For that reason this page shows each storage on its own line, and the Perth total sits on its own page. Readings for smaller regional dams can also lag, and Water Corporation notes that sometimes circumstances prevent a level being read at all.
DPIRD’s south-west freshwater guide lists Big Brook, Glen Mervyn, Logue Brook, Wellington, Waroona, Harvey and Drakesbrook dams as popular trout waters, together with the Blackwood, Donnelly, Murray and Warren rivers. Its Pemberton Freshwater Research Centre stocks trout in south-west waterways every year, but only in waters stocked in the past: it no longer stocks waters that hold vulnerable native fish and does not stock waters that have never been stocked. Freshwater angling anywhere south of Greenough, at 29 degrees south, and above the tidal influence needs the South-west freshwater angling licence, dams included, though anglers under 16 are exempt. On the bank the gear limit is two rods or hand lines, bait and lures are both allowed, a landing net may be kept within 50 metres of the water’s edge, and a trout has to measure 300 millimetres to be kept. The managers set the boating rules. Water Corporation allows kayaks and canoes but no power boats at Harvey Dam, and at Wellington Dam it permits swimming, paddling and water skiing on a small section at Potters Gorge. At Lake Navarino, behind Waroona Dam, Parks and Wildlife points boaters to the Department of Transport’s boating guide for the lake.
Recreational marron fishing opens at 12 noon on 8 January and closes at 12 noon on 5 February, and DPIRD prohibits fishing for or transporting marron at any other time. Most of the fishable dams in this table are snare-only waters, where a single bushman’s pole snare is the only legal gear within 50 metres of the water: Big Brook, Drakes Brook, Glen Mervyn and Logue Brook dams, Harvey Dam with the Harvey River above the South Western Highway, Waroona Dam and its tributaries, and Wellington Dam upstream of the wall. Within 500 metres of the high-water mark of Harvey Dam and Waroona Dam the trophy rules apply, with a 90 millimetre carapace minimum and five marron a day; elsewhere the minimum is 80 millimetres, with eight a day and 16 in possession. Redfin perch are a pest that DPIRD does not stock, and it asks anglers to euthanise them humanely rather than return them, since redfin eat far more marron than trout do. Other waters are shut completely. DPIRD closes Water Corporation’s public drinking water supply dams and their catchments to all fishing, with penalties, and at Harding Dam, a source for the West Pilbara Water Supply Scheme that serves Dampier, Karratha, Roebourne, Wickham and Point Samson, only bushwalking is allowed in the 1,100 square kilometre source protection area, with no access at all within two kilometres of the high-water mark.
Lake Argyle is the Bureau’s Argyle (Ord River) storage, and Water Corporation reports it as the Ord River dam in its North West total alongside Harding. The Bureau also lists the Ord Irrigation Co-operative among the suppliers of its water market data. The lake lies far north of Greenough, so the south-west freshwater licence does not apply there; DPIRD’s barramundi rules require the Recreational Fishing from Boat Licence for any fishing from a powered boat, even when every fish goes back, but not for fishing from a boat without a motor. Barramundi are the main species on this site’s fishing pages for both Lake Argyle and Lake Kununurra, which carry DPIRD’s size and bag limits. Because Lake Argyle holds so much water, a change of a few gigalitres barely moves its percentage, so for the Ord the level in metres on the lake’s own page can be easier to read. For Kununurra Diversion Dam, the storage behind Lake Kununurra, the Bureau’s figure counts only the small share of its capacity that lies above the lowest outlet.
Each row in the table shows the latest Bureau of Meteorology volume, percentage and seven-day change for one Western Australian storage. Water Corporation also publishes regional totals for the Metro, South West, Great Southern, Mid West and North West dams on its own dam levels page.
DPIRD lists Big Brook, Glen Mervyn, Logue Brook, Wellington, Waroona, Harvey and Drakesbrook dams among the popular trout waters; anglers aged 16 and over need the South-west freshwater angling licence. Water Corporation’s drinking water supply dams, including Perth’s hills dams, are closed to fishing.
From 12 noon on 8 January to 12 noon on 5 February, with a marron licence. Most fishable dams are snare-only waters, and Harvey and Waroona dams carry trophy rules within 500 metres of the high-water mark.
Water Corporation counts dead storage, the water under a dam’s lowest offtake, whereas the Bureau publishes accessible water alone. The daily estimates are also made in slightly different ways, so the same dam can show a few points’ difference on the same day.
No. Water Corporation says Wellington Dam’s water is not suitable for drinking and is used mostly for irrigation, managed by Harvey Water. Swimming, paddling and licensed fishing are allowed at the dam.
Data: Bureau of Meteorology, Water Data Online and the Australian Water Storages dataset, © Commonwealth of Australia, CC BY; volumes supplied by © Water Corporation. Where the Bureau lists no capacity, or its capacity and volume are on different bases, a row shows the volume only. Text by Pablo Ruiz Quintero.
The facts on this page were checked against these pages, from the agencies, park services and operators that manage the water on 28 September 2026; anything we could not verify was taken out. Written by Pablo Ruiz Quintero. Errors are published in the verification log.