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Data.

This dataset was collected by Citizen Scientists at an official 'Survey Area' as part of the Litter Intelligence long-term litter monitoring programme. The data are freely and openly accessible to anyone. Download the raw data, share this survey, and learn more about the data collection methodology through the links at the bottom of the page.

Litter Survey

freshwater-icon Freshwater.

Cardrona River

18 December 2025

WAI Wānaka

Jose Cranfield

Overview

B

40

20.0

5.0

100m x 20m

Gravel/Pebble

Items per 1,000m2

120

Products

241

3943

Type Count Weight (g)
Plastic 80 1248
Resin pellets B N/A
Food wrappers 6 350
Gardening & farming related 2 26
Bottles, drums, jerrycans & buckets > 2 L 1 55
Bottle caps & lids 3 12
Cigarettes, butts & filters 23 3
Food containers 2 34
Plastic bags 19 118
Other Plastic 14 27
Unidentifiable soft plastic fragments 5 83
Unidentifiable hard plastic fragments 4 1
Plastic vehicle parts 1 539
Paper & Cardboard 52 274
Other Paper & Cardboard (specify) 3 28
Cups, food trays & wrappers 31 227
Unidentifiable paper and cardboard fragments 18 19
Glass & Ceramic 41 1635
Bottles & jars 13 1562
Other Glass & Ceramic (specify) 1 5
Glass or ceramic fragments 27 68
Foamed Plastic 24 12
Other Foamed Plastic 6 3
Foam sponge 1 8
Polystyrene insulation or packaging 17 1
Fabric & Textiles 24 415
Backpacks & bags 2 6
Clothing, towels and linen 2 384
Other cloth 12 21
Unidentifiable cloth fragments 8 4
Metal 20 359
Metal Bottle caps, lids & pull tabs 5 2
Other cans (<= 4 L) 12 23
Other Metal 2 315
Aluminium drink cans 1 19

Materials

  • Would you like to analyse the data yourself?
  • Or share if you think this data would be interesting to others.
  • If you would like to learn how this data was collected. Our Methodology

Previous survey in this area

Cardrona River WAI Wānaka
19 Dec, 2024
Items per 1,000m2
84
58%