Catchment: Derwent

Current state for 2026-06-15.

Catchment alert

1 sensor(s) are in alert state.

Review sensors for likely cause and confidence.

Catchment health score

72 /100
StatusWatch
Alerts1
Watch0
Avg trust1.00
  • 1 sensor alert state(s) are active today.
  • Observed DO % is materially displaced from expected levels across the catchment.



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What this says commercially

Catchment health is currently rated 72/100 (Watch). 1 alert-state sensor(s) and 0 watch-state sensor(s) are active in today's prepared view. The dashboard is identifying a moderate pressure state, useful for demonstrating early warning capability before severe degradation is visible across all sensors.

What this means operationally

DO % is currently below expected at Upstream, Midstream. Overflow-related risk is currently low, so unexplained local changes would deserve more attention if they emerge. No strong catchment-wide stress signal is present in the prepared indicators for today.

Flow m³/s
—
Rainfall influence mm/last 6h
0.0
Air temperature °C
16.0
Overflow Incidents
0

Current sensor state

Upstream, Midstream and Downstream

Upstream

Stable
103.6%
8-day trend -0.3
Today avg
97.9%
Expected
102.7%
Variance
-4.8
vs yesterday-1.3
vs last week-0.3
vs last month-1.4
vs last year-6.7
Water temp10.2°C
Trust1.00

Midstream

Alert
83.5%
8-day trend -9.4
Today avg
80.1%
Expected
92.2%
Variance
-12.1
vs yesterday-8.2
vs last week-9.4
vs last month—
vs last year-15.2
Water temp11.7°C
Trust1.00

Anomaly likely cause: uncertain · confidence 0.45

Downstream

Above expected
105.6%
8-day trend +2.9
Today avg
101.2%
Expected
94.5%
Variance
+6.7
vs yesterday-1.2
vs last week+2.9
vs last month+0.5
vs last year+10.8
Water temp11.7°C
Trust1.00

Overflow: Low risk

0 /100
Rain 6h max0.0
Overflow overlap0
Flow latest—
  • No strong overflow-linked drivers are active.

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

  • No strong catchment-wide stress signal is present in the prepared indicators for today.

Calendar-accurate comparisons

Comparison dates used

Yesterday14 Jun 2026
Last week08 Jun 2026
Last month15 May 2026
Last year15 Jun 2025