Citizen science, live now

Research grows one raindrop at a time

Every reading you submit becomes part of a worldwide open dataset. Explore what the community is collecting right now โ€” or add the very first drop.

1
Public surveys open
Community-run ยท live now
23
Responses collected
across the community ยท and growing
0
Cities collected from
Put yours on the map

Learn โ€บ Awareness

1 open
Water Usage Survey
Water usage survey.
ACTIVE
Started Ends
23
responses
17
collecting

Experiment โ€บ Measure Data

1 running
๐Ÿงช Measure Rainfall

Help build a community rainfall dataset. Each day, check your rain collector and record what you observe. Each week, confirm your setup and results.

Your daily readings automatically roll up into weekly totals, rainy/dry day counts, highest rainfall and averages. Accurate, honest observations โ€” including "no rain" and "missed" days โ€” matter just as much as big numbers.

LIVE
M
T
W
T
F
S
S
Daily cadence ยท one reading per square ยท weekly confirm
0
reports so far
daily
cadence
~2 min
per reading

Analyze โ€บ See the Invisible

1 open

Pilot โ€บ Rainflower

building
๐ŸŒฑ Rainflower
PILOT
The namesake pilot, built in California by Ethan Kabir. All the software, hardware and design are being open-sourced so the Rainflower team can build, replicate, deploy, monitor and improve it.

Assessments

quizzes
PUBLICATIONS

Reports, essays, proposals & grants

Longer-form research writing assigned by the Rainflower team. Take a seat, write or upload your work, and have it reviewed by our advisors.

Join to take part โ†’

A dataset only a community can build

Satellites estimate. Models guess. But nobody knows what fell in your backyard better than you. Join collectors worldwide and help ground-truth the map, one city at a time.

Start collecting today
your city?