Data.

This dataset was collected by Citizen Scientists at a specific 'Survey Area', set-up at an official ‘Monitoring Site’ 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 Collection Survey

Porirua Harbour

Paremata Bridge

4 August 2019

Friends of Mana Island

John McKoy

Overview

C

21

12.6

21

30m x 9m

MuddySand

Items per 1,000m2

6396

Products

1727

9257

Type Count Weight (g)
Plastic 1370 2019
Resin pellets B N/A
Bottle neck rings 18 78
Pens 37 4
Clothes pegs 7 8
Food containers 129 172
Gardening & farming related 6 168
Bottle seals & tabs 9 3
Fishing line 100 58
Cigarettes, butts & filters 2 2
Parking tickets & receipts 3 2
Mesh bags 1 5
Plastic utensils 2 2
Fishing gear 2 12
Food wrappers 503 411
Plastic bags 24 481
Strapping bands 22 34
Unidentifiable hard plastic fragments 300 254
Rope 43 142
Bottle caps & lids (Plastic) 58 119
Lollipop sticks & cotton buds 63 24
Shotgun wadding & shells 2 5
Medical waste 4 9
Toys, balls & party poppers 3 3
Straws 32 23
Glass & Ceramic 287 2084
Construction material 149 1515
Glass or ceramic fragments 138 569
Foamed Plastic 26 22
Polystyrene insulation or packaging 16 5
Ear plugs 2 2
Foam sponge 8 15
Wood 23 4754
Processed timber & pallet crates 23 4754
Metal 14 44
Foil wrappers 8 2
Metal Bottle caps, lids & pull tabs 2 7
Aluminium drink cans 2 32
Other Metal 2 3
Rubber 3 31
Rubber footwear 1 27
Balloons, tennis balls, footballs, dog toys etc 2 4
Other 2 0
Sanitary items 2 N/A
Paper & Cardboard 1 28
Cups, food trays & wrappers 1 28
Cloth 1 275
Clothing, hats, gloves & towels 1 275
Materials
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  • If you would like to learn how this data was collected. Our Methodology