hydrology

within 25 miles

Dec 3, 2025

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NASA

Community Snow Observations

To improve temporal and spatial snow depth data coverage.

Anywhere

Ongoing

Citizen ScienceOcean Water MarineEducationGeology & Earth ScienceClimate & WeatherGeographyComputers & TechnologyEcology & EnvironmentNature & Outdoorssnowmountainsremote sensingnasahydrology_nasacryosphere

University of Zurich, Department of Geography, Hydrology and Climate Group

CrowdWater

Collect hydrological data using a smartphone app

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Ongoing

Citizen ScienceGeographyNature & OutdoorsOcean Water MarineEcology & EnvironmentGeology & Earth Sciencehydrologysoil moisturecrowdwaterriverstreamflowdroughtcrowdstreamtemporary streamsfloodwater levelflow conditionswater

SPOTTERON GmbH

CrowdWater

Collecting hydrological data

Anywhere

Ongoing

Citizen ScienceEcology & EnvironmentNature & OutdoorsOcean Water Marineseamarinecrowdwatercitizen sciencecoastlinewaterstreams

University of Zurich, Department of Geography, Hydrology and Climate Group

CrowdWater game

Data quality control and improvement of crowdsourced water level data

Anywhere

Ongoing

Citizen ScienceClimate & WeatherOcean Water MarineEcology & EnvironmentGeographyNature & Outdoorshydrologystreamsstream levelgamewaterstreamflowriversdroughtfloodwater levelcrowdwater

NASA

Lake Observations by Citizen Scientists and Satellites

Help us observe and report lake levels!

Anywhere

Ongoing

Citizen ScienceNature & OutdoorsClimate & WeatherOcean Water Marineriversatellite_nasanasa-sciactlakewater levelhydrologynasalimnology

Michigan Clean Water Corps

MiCorps Volunteer Stream Monitoring Program

Monitor health of Michigan’s streams and rivers

Multiple locations, including yours!

Ongoing

Citizen ScienceGeology & Earth ScienceOcean Water MarineEcology & EnvironmentBiologyriversstreamflowbenthicinsectsmacroinvertebrateshydrologybugswatershedstreams

Lynker and DRI / NASA

Mountain Rain or Snow

Our goal is to improve estimates of precipitation phase (rain vs. snow).

Multiple locations, including yours!

Ongoing

Citizen ScienceClimate & WeatherEcology & EnvironmentOcean Water Marinerainclimatetechnologyprecipitationwaternasa-supportedsnow_nasaweathernasa-sciacthydrology

UK Centre for Ecology and Hydrology, Botanical Society of Britain and Ireland, Plantlife, the Joint Nature Conservation Committee, and The Department of Agriculture, Environment and Rural Affairs for Northern Ireland

National Plant Monitoring Scheme

Record abundance and diversity of plant species in the UK.

Multiple locations, including yours!

Ongoing

Citizen ScienceNature & OutdoorsEcology & EnvironmentBiologyhabitatsspecieshedgerowecologyevidencewetlandwoodlandheathlandukterrestrialplantsbotanygrasslandwildflower

Prescott College

Returning Rapids Western Grand Canyon

To monitor and understand the returning rapids of the Western Grand Canyon’s Colorado River.

Multiple locations, including yours!

Ongoing

Citizen Sciencegrand canyonriver raftingmonitoringwestern grand canyonclimate change returning rapids river colorado riverwater qualitycolorado riverlava clifflake mead water qualitydroughtrapids monitoring lake mead hydrologyhydrology western grand canyonriver lava cliff drought river raftingreturning rapids rapids grand canyon

SkNOWLEDGE COLLECTIVE

Science, math (& more!) outdoors, one snowball at a time ❄!

Anywhere

Ongoing

Citizen ScienceGeographyClimate & WeatherEducationclimatesnowscienceenvironmentmathoutdoorsoutdoor field-based activitiesearth observationgisenvironment educationmeteorological datameteorologicalschool-based citizen science initiativeweatherhydrological snow wetnesswater resourcesclimate changetemperaturesnow depth

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