Join the EyeOnWater community!
Join the
EyeOnWater community!
2760
People have participated
24510
Observations around the world
134
Most measurements per day
4.7
Average measurements per day
2760
People have participated
24510
Observations around the world
134
Most measurements per day
4.7
Average measurements per day
What does water colour indicate?
One of the most apparent characteristics of water to the human eye is water colour. Water colour indicates the algae and organic content of the water that feeds organisms.
Your observations are therefore valuable to scientists and water authorities. You can now contribute by downloading our EyeonWater app!
Step 1
Download the app
Step 2
Take a picture
Step 3
Send your photo
Step 4
Take a look
Latest statistics
Observations per region
Top 5 users of all time
Observations per colour
Our observations
Colour
The EyeOnWater colour app helps us to classify rivers, lakes, coastal waters, seas and oceanc on it colour (it can be used over both fresh and saline natural waters). The observations via the app are an extension of a long term (over 100 years) set of water colour observations made by scientists in the past. You can view them all together in this map application.View color observations
Clarity
Clarity observations are usually done by Secchi Disk, lowering a white disk in the water and measuring to what depth it is still visible. EyeOnWater has collected a large dataset of observations from the past, and this set has been extended by citizens and volunteer measurements contributed via the EyeOnWater app.View clarity observations
Download for free
Our app is free, But your contribution to water research will be priceless!