100+
Downloads
Content rating
Everyone
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

The Secchi disk is a white disk that is lowered into the water and the depth at which it disappears and reappears from sight is logged. This depth is proportional to the clarity or transparency of the water. The Forel Ule colour scale is used to classify the colour of natural waters.It consists of 21 colours ranging from blue to green to yellow to brown, and is used alongside the Secchi disk with the observer typically recording the colour of a submerged Secchi disk with this app. The app will guide you through each measurement, store location data, photos and additional observations.
Review past measurements from yourself and others.
Updated on
11 Oct 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Location
Data is encrypted in transit
You can request that data be deleted

What's new

Fixes a bug with pH value not being sent to PML

App support

About the developer
DDQ B.V.
norbert@pocket.science
Kloosterweg 1 6412 CN Heerlen Netherlands
+31 45 203 1008

More by Pocket Science Citizen Science apps