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A Guide to Australian Water Market Reports and Data
Good market data is the difference between trading on information and trading on guesswork. Here's where to find it, what each source covers, and how to read the numbers that matter.
Primary Data Sources
Victorian Water Register (VWR) — the authoritative source for Victorian trade data. The Water Market Dashboard shows trade volumes, VWAP by zone, and transaction-level detail. This is where Zone 1A and Zone 6 price data comes from. Updated regularly with a short lag. If you trade in Victoria, this should be your first stop.
Bureau of Meteorology (BoM) — the national data aggregator. The BoM publishes the annual Australian Water Markets Report (the official record of national trading activity) and maintains the Water Markets Dashboard with cross-state data. The BoM also provides the climate data (ENSO, IOD, rainfall, dam storage) that drives prices.
Murray-Darling Basin Authority (MDBA) — publishes weekly river operations reports including storage levels for Hume, Dartmouth, Eildon, and other key dams. Also reports on trade constraints like the Barmah Choke and interstate trade limits. Essential for understanding the physical system behind the market.
WaterNSW — the NSW equivalent of the VWR for trade data in NSW regulated and unregulated systems. Also publishes water trade updates, rule changes, and zone-specific information.
Ricardo (formerly Aither) — the leading independent market analyst. Their annual Water Markets Report is the most comprehensive commercial analysis available, covering multi-zone VWAPs across the southern MDB, market turnover estimates, and the outlook for entitlement and allocation markets. They also publish the Ricardo Entitlement Index (REI), which tracks entitlement capital values like a stock index.
Key Metrics and How to Read Them
Volume Weighted Average Price (VWAP) — the most reliable price indicator. Calculated as total trade value divided by total volume traded. This gives appropriate weight to larger trades and avoids being skewed by small, off-market transactions. Always prefer VWAP over simple averages. Current Zone 1A VWAP: $258/ML (WY2025/26 YTD).
Trade volume (GL) — total megalitres traded in a period. Zone 1A typically trades 350–500 GL of temporary allocations per year. High volumes in a rising market confirm genuine demand; high volumes in a falling market suggest distressed selling.
Net trade by zone — the volume traded into a zone minus the volume traded out. A zone with positive net trade is a net importer of water (demand exceeds local supply). This metric reveals where water is physically flowing.
Market turnover ($) — total monetary value of all trades. The southern MDB commercial allocation market was worth approximately $235M in WY2024/25, up from $28M in the wet WY2022/23. At peak drought (WY2018/19), turnover reached $566M.
Ricardo Entitlement Index (REI) — tracks the capital value of a portfolio of major water entitlements across the southern MDB. Think of it as the ASX 200 for water entitlements. Useful for tracking the long-term performance of water as an asset class.
Storage levels and allocation percentages — the leading indicators for price direction. Lake Eildon capacity (3,334 GL) and the NVRM HRWS determination for Zone 1A are the two numbers to watch. Current: Eildon at 42%, HRWS at 80% final.
Putting It Together
A practical approach to reading the market:
Weekly: Check MDBA storage levels and river operations reports. Note the direction of Eildon, Hume, and Dartmouth.
Fortnightly: Review VWR dashboard for latest Zone 1A and Zone 6 VWAP and trade volumes. Compare to the seasonal pattern (prices typically low Jun–Jul, peak Jan–Feb).
Monthly: Track BoM ENSO and IOD outlook updates. These are the earliest signals for next season's conditions.
Annually: Read the BoM Water Markets Report and Ricardo's annual report for a comprehensive review of the year and the outlook.
For an explanation of the price drivers behind the data, see understanding water trading prices. For climate signal interpretation, see how drought affects water prices.