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MARIS
EyeOnWater
Capturing water colour of marine and fresh water
Anywhere
- Ongoing
Citizen ScienceOcean Water MarineEcology & Environment
secchi
within 25 miles
Aug 15, 2026
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Global Lake Ecological Observatory Network (GLEON)
Lake Observer mobile app
Monitor water quality in lakes and watersheds worldwide
Anywhere
- Ongoing
Citizen ScienceEcology & EnvironmentOcean Water MarineComputers & TechnologyNature & OutdoorsClimate & WeatherChemistryBiologywater qualitylimnologylakemobile appecologymonitoringcitizen science
University of Missouri
Lakes of Missouri Volunteer Program
Monitor water quality of Missouri Lakes
Multiple locations, including yours!
- Ongoing
Citizen ScienceEducationChemistryNature & OutdoorsEcology & EnvironmentOcean Water Marinesecchi diskmark twainsecchinutrientsstocktonreservoirsedimentchlorophylltoxintrumanphosphorusfiltrationmicrocystintable rocknitrogenfilteralgaelake of the ozarkssmithvillewaterblue green algaecitizen sciencemissouricyanotoxinmozingosciencecitizenlakeboatqualityblue greenvolunteer
Michigan Clean Water Corps
MiCorps Cooperative Lakes Monitoring Program
Record of lake water quality, plants, and shoreline habitat
Multiple locations, including yours!
- Ongoing
Citizen ScienceChemistryBiologyOcean Water MarineNature & OutdoorsEcology & Environmentchlorophyllinvasive speciessecchiphosphorusmichiganwater qualityhabitatalgaelakesplants
Pocket Science Citizen Science Apps (DDQ B.V.) / BrewTek (Hardware)
Mini Secchi
Observe water colour and turbidity
Anywhere
- Ongoing
Citizen ScienceEcology & EnvironmentOcean Water Marine
MPCA Citizen Water Monitoring Program
Track water clarity on lakes and streams across Minnesota
Multiple locations, including yours!
- Ongoing
Citizen ScienceEcology & EnvironmentEducationOcean Water Marinelakessecchicitizen science waterstream monitoringvolunteer water quality
Secchi Disk study
Help study marine phytoplankton.
Anywhere
- Ongoing
Citizen Scienceyachtanglingmarine. ocean. seaboattemperaturephytoplanktonplanktondivingsecchi diskclimate changesailing
North American Lake Management Society
The Secchi Dip-In
Monitoring the water quality of lakes, rivers, and estuaries.
Multiple locations, including yours!
- Ongoing
Citizen ScienceChemistryGeology & Earth ScienceClimate & WeatherOcean Water MarineBiologyNature & OutdoorsEcology & EnvironmentEducationComputers & Technologymonitoring datanasecchi diskenvironmental educationcitizen scienceaccessible databaselakes appreciation monthlake and watershed stewardshiplakewater clarity
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