# Grehan Stream, a waterway of Christchurch

A stream, 3.6 km as OpenStreetMap draws it, crossing 1 suburb. Also recorded as “Ōinako”.

## The suburbs on its banks

- [Akaroa](https://www.chch.live/akaroa)


## The reports along it
290 reports pinned within 150 m of the line, a pin is where a reporter stood, not a claim about the place.
- [Trees - General](https://www.chch.live/report/8835393), [48 Woodills Rd, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/48-woodills-road)
- [Water General](https://www.chch.live/report/8795915), [28B Rue Jolie, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28b-rue-jolie)
- [Road Signage](https://www.chch.live/report/8703554), Rue Jolie, Canterbury, Akaroa 7520, New Zealand
- [Water Leak](https://www.chch.live/report/8522122), [28 Rue Grehan, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28-rue-grehan)
- [Pothole](https://www.chch.live/report/8488519), [12 Rue Lavaud, Banks Peninsula, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/12-rue-lavaud)
- [Water General](https://www.chch.live/report/8428224), [103 Grehan Valley Rd, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/103-grehan-valley-road)
- [Water Leak](https://www.chch.live/report/8427749), [28 Rue Jolie, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28-rue-jolie)
- [Flooding](https://www.chch.live/report/8409392), [28 Rue Lavaud, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28-rue-lavaud)
- [Facility - General Request](https://www.chch.live/report/8375280), [28C Rue Jolie, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28c-rue-jolie)
- [Water Leak](https://www.chch.live/report/8250001), [46 Rue Grehan, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/46-rue-grehan)
- [Water Leak](https://www.chch.live/report/8249995), [46 Rue Grehan, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/46-rue-grehan)
- [Water General](https://www.chch.live/report/8213083), [28 Rue Lavaud, Canterbury, Akaroa 7520, New Zealand](https://www.chch.live/akaroa/28-rue-lavaud)

## Questions, answered briefly

**How long is Grehan Stream?**

3.6 km as mapped, 3 ways in the open map, crossing 1 suburb.

**Which suburbs does Grehan Stream pass through?**

Akaroa.

**What else is Grehan Stream called?**

The map also records “Ōinako”, the page answers to all of them.

**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 line is OpenStreetMap’s, named ways tagged river, stream, drain or canal inside the city boundary, merged by name (ODbL). Centrelines, not banks; the live gauges are instruments, kept at https://www.chch.live/rivers.
The page: https://www.chch.live/river/grehan-stream
Every waterway as data: https://www.chch.live/waterways.geojson
The whole roll: https://www.chch.live/river