Catchment: Derwent

Current state for 2026-08-19.

Stable

No storm-overflow-linked anomaly is active today.

The catchment view is coherent across the three sensor positions.

Catchment health score

97 /100
StatusStrong
Alerts0
Watch0
Avg trust1.00
  • No material cross-sensor stress signal is currently visible in the prepared data.



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What this says commercially

Catchment health is currently rated 97/100 (Strong). 0 alert-state sensor(s) and 0 watch-state sensor(s) are active in today's prepared view. The catchment is broadly stable with coherent cross-sensor behaviour, which is the kind of calm-state view customers expect from a production monitoring product.

What this means operationally

All three sensor positions are currently close to prepared expected conditions. Overflow-related risk is currently low, so unexplained local changes would deserve more attention if they emerge. Recent rainfall is elevated enough to be considered an influencing factor in today’s readings.

Flow m³/s
—
Rainfall influence mm/last 6h
11.5
Air temperature °C
17.3
Overflow Incidents
0

Current sensor state

Upstream, Midstream and Downstream

Upstream

No data
—%
8-day trend -3.3
Today avg
—%
Expected
—%
Variance
—
vs yesterday—
vs last week—
vs last month—
vs last year—
Water temp—°C
Trust—

Midstream

Stable
99.4%
8-day trend -4.7
Today avg
92.4%
Expected
93.9%
Variance
-1.6
vs yesterday-2.6
vs last week-4.7
vs last month-3.0
vs last year-6.6
Water temp13.8°C
Trust1.00

Downstream

Stable
101.9%
8-day trend -4.5
Today avg
96.6%
Expected
96.8%
Variance
-0.1
vs yesterday-2.9
vs last week-4.5
vs last month-5.8
vs last year-3.7
Water temp13.7°C
Trust1.00

Overflow: Low risk

12 /100
Rain 6h max11.5
Overflow overlap0
Flow latest—
  • Rainfall proxy is elevated over the last 6 hours.

Alerts

Storm-overflow-linked anomalies

No storm overflow anomalies are likely today.

Main view

Observed vs expected today

Influencing factors

Flow, weather and overflow context

Catchment interpretation

What a user would likely ask first

  • Recent rainfall is elevated enough to be considered an influencing factor in today’s readings.

Calendar-accurate comparisons

Comparison dates used

Yesterday18 Aug 2026
Last week12 Aug 2026
Last month19 Jul 2026
Last year19 Aug 2025