Permanent monitoring sites
Map and revisit locations to build an ongoing picture of waste at each site.
Environmental Data Platform · Monitoring · Geospatial
A repeat-survey platform for comparable waste data
Fixed monitoring sites and a shared protocol turn repeat litter surveys into comparable evidence for waste decisions across Tanzania.
takadata.org- Industry
- Environmental data
- Timeline
- Ongoing
- Year
- 2026
T
What it supports
Repeat surveys
A declared 28-day resurvey cycle supports consistent monitoring over time.
A consistent protocol
Standardized site definitions, sampling, item categories and units make results more comparable.
Baseline and accumulation data
Keep a site's first snapshot separate from later surveys measuring litter accumulation between clearances.
Open map and site records
Explore published monitoring data by location without signing in.
Partner data collection
Local partners, researchers, communities and organizations contribute field data to a shared evidence base.
The challenge
Waste surveys often use different site boundaries, collection methods, categories and units. One-time snapshots cannot show whether conditions at a place are improving or worsening. TakaData needed a consistent way to revisit sites, build a shared evidence base and make the results useful for waste-management decisions.
How we built it
The decisions that shaped the product, in the order we made them.
- 01
Published a monitoring protocol
Set out the survey design, site geometry, intervals, item categories and normalization rules, drawing on published monitoring guidance including OSPAR, NOAA and UNEP/IOC.
- 02
Designed around permanent sites
Mapped monitoring locations and a declared 28-day resurvey cycle give partners a consistent place and rhythm for returning to collect evidence.
- 03
Separated baselines from change over time
The first visit records a site's standing-stock baseline. Later visits measure accumulation since clearance, keeping a snapshot distinct from the rate of litter arriving over time.
- 04
Published evidence for people to use
A public map and site-level records make monitoring results available without an account, so partners and decision-makers can explore the evidence directly.
What it's built with
Named in full, because the question behind it is usually whether your own team could take this over.
- Django + DRFAPI and analysis layer
- PostgreSQLshared environmental dataset
- Pythonsurvey scoring and analysis
- Leafletinteractive monitoring map
- React + TanStack Startpublic site and data platform
- Rechartsdata visualizations
- Docker + Caddydeployment and TLS
Results
28 days
Declared resurvey cycle for permanent sites
Baseline + flux
A first snapshot kept distinct from later accumulation
Open data
Public map and site records available without an account