# The drawn water

The district plan’s water-margin layers, 10,462 records: 2,451 kilometres of classified waterway reaches, 14,045 hectares of setback strips held back from the banks, and 198 kilometres of esplanade reserve lines. Where /waterways is the water the map can see and /flood-hazard the water the plan waits for, this is the water the plan draws around.

## The classified reaches

- Hill Waterway: 1,864 lines, 1744.3 km
- Environmental Asset Waterway: 1,478 lines, 225.6 km
- Network Waterway: 1,803 lines, 212.0 km
- Downstream Waterway (except Mona Vale): 156 lines, 100.9 km
- Banks Peninsula Waterway: 132 lines, 100.7 km
- Upstream Waterway: 203 lines, 65.1 km
- Downstream Waterway (Mona Vale): 12 lines, 2.2 km

## The setback strips

- Environmental Asset Standing Water Body, 20 m: 17 strips, 6,953 ha
- Hill Waterway, 10 m: 1,258 strips, 3,359 ha
- Downstream Waterway (except Mona Vale), 30 m: 12 strips, 1,522 ha
- Hill Waterway, 20 m: 971 strips, 813 ha
- Network Waterway, 5 m: 807 strips, 286 ha
- Banks Peninsula Waterway, 15 m: 98 strips, 274 ha
- Environmental Asset Waterway, 10 m: 536 strips, 265 ha
- Upstream Waterway, 20 m: 27 strips, 198 ha
- Environmental Asset Waterway, 7 m: 484 strips, 182 ha
- Upstream Waterway, 10 m: 155 strips, 57 ha
- Environmental Asset Waterway, 20 m: 45 strips, 46 ha
- Banks Peninsula Waterway, 20 m: 78 strips, 42 ha
- Environmental Asset Standing Water Body, 7 m: 49 strips, 33 ha
- Downstream Waterway (Mona Vale), 15 m: 1 strip, 10 ha
- Hill Waterway, 5 m: 19 strips, 4 ha
- Network Waterway, 20 m: 1 strip, 0 ha

## The held edge

- Esplanade reserve line: 256 lines, 197.7 km

## The suburbs on the margin

By share of outline inside the setback strips, a sampled join, so a sliver still counts. Reaches and esplanades are counted as crossings, not cover.

- Ferrymead: 23% inside setback strips, 93 classified reaches, Matuku Waterway, Avoca Valley Stream, held edge
- Opawa: 18% inside setback strips, 18 classified reaches, Jacksons Creek Lower, Heathcote / Opawaho River, held edge
- Kainga: 17% inside setback strips, 26 classified reaches, Northern Plant Drain, Northern Plant Drain Branch, held edge
- Hillsborough: 15% inside setback strips, 90 classified reaches, Victory Drain, Popes Drain, held edge
- Woolston: 14% inside setback strips, 118 classified reaches, Steamwharf Stream, Bells Creek, held edge
- Richmond: 14% inside setback strips, 29 classified reaches, Dudley Creek, Avon River, held edge
- Avondale: 14% inside setback strips, 23 classified reaches, Avon River, Wainoni Drain, held edge
- Beckenham: 14% inside setback strips, 10 classified reaches, Heathcote / Opawaho River, Sibleys Drain
- Belfast: 14% inside setback strips, 189 classified reaches, Kaputone Creek, Wilsons Drain, held edge
- Coutts Island: 13% inside setback strips, 104 classified reaches, Waimakariri River South Branch, Otukaikino Creek, held edge
- Dallington: 13% inside setback strips, 7 classified reaches, Avon River, Moyna Ave Drain, held edge
- Avonside: 13% inside setback strips, 14 classified reaches, Brittans Drain, Avon River
- Northwood: 12% inside setback strips, 55 classified reaches, Styx River, Harts Creek, held edge
- Fendalton: 12% inside setback strips, 68 classified reaches, Avon River, Fendalton Stream, held edge
- Christchurch Central: 11% inside setback strips, 33 classified reaches, Avon River, Manchester Street Drain, held edge

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Christchurch City Council open data, the DistrictPlanB service’s water-margin layers (the classified waterway reaches, the water-body setback strips, and the esplanade reserve lines). The strips are the plan’s margin, not a survey of the bank. A point’s own answer: https://www.chch.live/before · the ground’s other standings: https://www.chch.live/zones · https://www.chch.live/matters. The files: https://www.chch.live/water-margin.json · https://www.chch.live/water-margin.geojson · by suburb: https://www.chch.live/suburb-watermargin.json