chch.live a waterway

Walnut Stream

A stream of the city, 1.8 km as the open map draws it, crossing 1 suburb.

As the line runs
1.8 km
Suburbs crossed
1

Where it runs

The centre of the water as OpenStreetMap draws it, centrelines, not banks, and not every reach carries water year-round. The faint outlines are suburbs.

Can you swim here

Akaroa Beach French Bay, the LAWA monitor that is ~300 m away, its latest weekly sample graded it suitable for swimming.

A water-quality risk grade, not a live verdict, after heavy rain any spot can turn. LAWA (Land Air Water Aotearoa) files the Canterbury sites for Environment Canterbury; its page is the one to check on the day.

The suburbs on its banks

Akaroa

The reports along it

333 council reports pinned within 150 m of the line, most often Water & drains and Roads & footpaths, 275 with a photograph. A pin is where a reporter stood, not a claim about the place itself.

Street Gutters / Storm Water 11–49 Beach Rd, Canterbury, Akaroa 7520 · 16 July 2026
Water Leak 53 Beach Road, Akaroa · 16 July 2026
Water Leak 2 Julius Place, Akaroa · 14 July 2026
Pavement - Damaged 51–75 Beach Rd, Canterbury, Akaroa 7520 · 3 July 2026

Questions, answered briefly

How long is Walnut Stream?

1.8 km as mapped, 11 ways in the open map, crossing 1 suburb.

Which suburbs does Walnut Stream pass through?

Akaroa.

Is the line on the map the whole waterway?

It’s the centreline, the middle of the water as mapped on OpenStreetMap, not its banks. A line says where it runs, not how wide it is or whether it carries water today.

The record behind this

The line is OpenStreetMap’s, every named way tagged river, stream, drain or canal inside the city boundary, merged by name (ODbL). A line says where a waterway runs, not how wide it is; the live gauges are instruments, kept on /rivers.

This page as markdown: /river/walnut-stream.md · every waterway as data: /waterways.geojson · /waterways.json · every roll, counted: /geography.