STREAMLET

Colaton Raleigh Stream monitor — eastern village reach (Pophams Farm gauge)

Updated: —

Email: —

Improbability: —

Confidence: —

“Dear native brook! wild streamlet of the West!”
— Samuel Taylor Coleridge, Sonnet to the River Otter

HOME

—

COMMUNITY

—

NORMALRoutine conditions

WATCHHeightened attention

WARNINGLikely impacts

TAKE ACTIONImmediate steps

Current situation

Data source: —

River level

— m

—

Rate of rise (RoR)

— m/h

Forecast uses RoR60 (best effort)

Forecast rainfall

—

ETA (if rise continues)

—

Best-effort: based on RoR60 + envelope

River level (last 24 h)

— —

Groundwater (last 180 d)

— —

Groundwater seasonal envelope

Groundwater seasonal envelope — Woodbury Common Current year vs historical seasonal range

Groundwater percentile

—th

Today vs historical values for this time of year

Groundwater summary

—

Automatic interpretation of the seasonal envelope

What do these numbers mean?

RoR (Rate of rise) is the change in river level per hour. STREAMLET tracks RoR30 and RoR60. ETA uses RoR60 because it’s less jumpy.
Envelope: the RoR thresholds used for WATCH / WARNING / TAKE ACTION. They widen when data is lower confidence to avoid over-reacting to noise.
Groundwater seasonal envelope: the live current year groundwater trace is plotted against the historical seasonal range at Woodbury Common. Red shading shows the drier lower range (5th–50th percentile), the grey line shows the median, and blue shading shows the wetter upper range (50th–95th percentile).
Improbability Drive: a sanity filter that suppresses obviously spurious spikes (pets, weeds, sensor weirdness, telemetry hiccups…).
Forecast rain is a short-term guide. High catchment saturation + modest rain can matter more than a big forecast when the catchment is dry.
This is a situational awareness tool. It doesn’t override observation, EA messaging, or common sense.

Catchment state

A quick view of how quickly the stream might react to rainfall. These are descriptive labels, not a formal hydrological model.

🌱 Soil wetness

—

🌧 Recent rain

—

🪣 Stored water

—

🌊 Response potential

—

Live summary

—

FlowWet30

— days

Days ≥ threshold

RainWet30

— days

Days ≥ threshold

Groundwater level

— mAOD

Woodbury Common absolute level

GW priming

—%

Percent of rolling range

GW RoR

— m/day

Short-term trend (best effort)

About STREAMLET (Dave / AI / assumptions)

Built as an independent local hobby project to make telemetry easier to interpret at-a-glance.
This is a hobby / experimental project, not a work project, and it is not associated with Dave’s employer.
It has not been validated, endorsed, or operated by the Environment Agency or Colaton Raleigh Parish Council.
In principle, STREAMLET combines stream level, recent rate of rise (RoR), catchment wetness, groundwater behaviour and short-term rainfall forecast to provide additional situational awareness for the eastern part of Colaton Raleigh.
The primary river level gauge is Pophams Farm. When that feed is stale, STREAMLET may fall back to a nearby Hayes Lane surrogate stage feed as a rough proxy.
Rainfall wet-day metrics are based on Environment Agency rainfall data from the Dotton station.
“Community” status is an independent local indicator for wider context. It does not imply Parish Council approval, endorsement, or validation.
The site and logic were developed experimentally using an iterative “vibe coding” approach with AI assistance and plenty of local sense-checking.
LinkedIn: Dave Gibson (this link goes to Dave’s profile page).

Friendly disclaimer: STREAMLET is a local situational awareness tool. It is not an official warning service, and it has not been validated by the Environment Agency or the Parish Council. Always use the official EA service and local observation for safety-critical decisions.

🌿 Climate note: To reflect the footprint of hosting and development, STREAMLET makes periodic donations to evidence-based climate action. This project currently supports the Giving Green Climate Fund. This is a best-efforts contribution rather than a formal carbon-neutral certification. If this little project helps your day, please consider supporting climate action too.