Reservoirs

Compared with normal

0.29 m below normal for this date

A ±7-day window around August 23, 2026, this reservoir's own most recent reading.

Percentile 21 across 31 years of record.

Rank 99 of 458 readings from these dates. Rank 1 is the lowest.

The rank counts individual readings, not years.

Most recent year lower on this date: 2025.

Median

70.15 m

Minimum

68.32 m2015

Maximum

71.41 m2000

90th percentile

70.34 m

Level over time

Resolution follows the range: daily up to a year, weekly at five years, monthly across the whole record.

August 23, 2026: 69.86 m.

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From July 25, 2026 to August 23, 2026. Minimum 69.18 m, maximum 69.91 m.

The vertical scale runs from 69.00 m to 70.00 m and does not start at zero: these are metres above sea level.

The dashed lines are the alert bounds AAA publishes today. The record keeps no history of those bounds, so we do not know whether they were the same in the past.

Today the reservoir is in Safety.

4 bounds fall outside this chart’s scale.

Every August 23 in the record

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8 years of the 32 with a reading on August 23 were below the most recent level.

From 1995 to 2026.

The dashed line is this reservoir’s most recent level: 69.86 m on August 23, 2026.

The vertical scale runs from 68.00 m to 71.00 m and does not start at zero: these are metres above sea level.

Years with no reading on this date are not in the record and are left as empty space on the axis.

Years below the most recent level are marked with a filled dot.

This counts years. The rank in the block above counts readings.

When it has been in each phase

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Each band is one run in one phase, since January 1, 2020.

The axis is calendar time, from January 1, 2020 to August 23, 2026. Stretches with no bulletin are left blank.

Current run

13 days in Safety, since August 11, 2026.

The longest run in Safety on record: 34 days, from November 15, 2025 to December 18, 2025.

Counts bulletin days, not calendar days.