🌧️ Measure Rainfall or Local Weather
Measuring rainfall and recording local weather is a simple citizen-science activity. With a homemade rain gauge and a notebook, you can observe how much rain falls in your area and compare weather conditions from day to day.
What You Can Measure
A small weather observation project can include several useful measurements:
- 🌧️ Amount of rainfall
- 🌡️ Air temperature
- 💨 Wind direction and approximate strength
- ☁️ Cloud conditions
- 💧 Humidity, if you have a suitable meter
- 🌤️ General weather conditions
Make a Simple Rain Gauge
You can make a basic rain gauge using a transparent, straight-sided container and a ruler. The container should be placed in an open area where buildings, trees, and other objects do not block rainfall.
Choose a Container
Use a clean, transparent container with relatively straight sides. A wider opening can make rainfall collection easier to observe.
Place It Outdoors
Put the container in an open location away from roofs, trees and walls that could divert rain into or away from the gauge.
Measure the Water
After rainfall, use a ruler to measure the depth of collected water in millimetres. Record the measurement as soon as practical.
Empty and Repeat
Empty the gauge after recording the measurement so it is ready for the next rainfall event.
Record Your Weather Observations
Keeping a regular record allows you to identify patterns. Try measuring at approximately the same time each day and record rainfall separately when a significant rain event occurs.
| Date | Rainfall (mm) | Temperature | Clouds | Weather Notes |
|---|---|---|---|---|
| Day 1 | — | — | — | — |
| Day 2 | — | — | — | — |
| Day 3 | — | — | — | — |
Why Is This Useful?
Local weather measurements can help you understand how weather varies around your home, school or community. Rainfall records can also be compared over weeks or months to identify unusually wet or dry periods.
Turn It Into a Citizen-Science Project
You can make the activity more interesting by asking several people in different locations to measure rainfall. Compare their results and investigate why rainfall amounts may differ between locations.
You can also create a simple graph showing rainfall over time. This provides a visual way to see periods of heavy rain, light rain and dry weather.
Monitor Beaches, Rivers, and Water Quality 🌊🔬
Beaches, rivers, lakes, and other waterways are important parts of our environment. By carefully observing these places and recording simple information about water conditions, people can contribute to citizen science and help identify changes in aquatic ecosystems.
Why Monitor Water?
Water quality can change because of rainfall, pollution, erosion, agricultural runoff, sewage, waste disposal, changes in temperature, and other environmental factors. Regular observations can help reveal patterns that may not be obvious from a single visit.
Monitoring does not always require sophisticated laboratory equipment. Simple observations such as water appearance, unusual odors, floating waste, algae, dead fish, and changes in the surrounding environment can provide useful information when recorded consistently.
Choose a Safe Monitoring Location
Select a beach, riverbank, lake, pond, or stream that can be observed safely. Ideally, visit the same location repeatedly so that observations from different days or seasons can be compared.
Step-by-Step Water Monitoring
Write down the date, approximate time, and location of your observation. If appropriate, record the name of the beach, river, lake, or stream.
Look at the water carefully. Record whether it appears clear, cloudy, muddy, unusually colored, or covered with visible floating material.
Check the shoreline and water surface for plastic, bottles, oil-like films, discarded fishing materials, sewage-related waste, or other pollutants. Do not touch potentially hazardous materials.
Record visible fish, birds, insects, aquatic plants, shells, crabs, or other organisms. Also note unusual numbers of dead or distressed animals.
Note whether it is sunny, cloudy, windy, or rainy. Recent heavy rainfall can significantly influence the appearance and quality of surface water.
Photograph the water, shoreline, visible pollution, unusual coloration, algae growth, and surrounding habitat. Photographs can help document changes over time.
If you have a suitable water-testing kit, you may measure parameters such as temperature, pH, turbidity, dissolved oxygen, or other indicators. Follow the kit instructions carefully and record the units and testing method.
What Should You Record?
- Date and time: When the observation was made.
- Location: Where the water was monitored.
- Weather: Current conditions and recent rainfall.
- Water appearance: Clear, cloudy, muddy, or unusual.
- Visible pollution: Plastic, trash, oil-like films, or other waste.
- Wildlife: Fish, birds, insects, plants, and other organisms.
- Water measurements: Any measurements made with appropriate equipment.
- Photographs: Images documenting important observations.
Look for Changes Over Time
One observation provides a snapshot, but repeated observations can be much more informative. For example, you might notice that a river becomes more turbid after heavy rain or that floating waste increases during certain periods.
Comparing photographs and measurements from the same location over weeks, months, or years can help reveal environmental trends.
Water Quality Is More Than Appearance
Clear-looking water is not necessarily safe or free from contamination. Some pollutants and microorganisms cannot be detected simply by looking at or smelling the water.
Therefore, visual observations should be treated as environmental observations, not as proof that water is safe for drinking, swimming, or other activities. Laboratory analysis or properly conducted testing may be necessary to determine specific contaminants.
Safety First ⚠️
Never put yourself at risk while collecting observations. Avoid entering fast-moving rivers, unstable riverbanks, strong surf, deep water, or polluted areas.
- Do not touch unknown chemicals, waste, or dead animals.
- Do not drink water being monitored.
- Avoid collecting samples from visibly contaminated water unless you have appropriate training and equipment.
- Keep children away from dangerous water conditions.
- Follow local warnings and environmental regulations.
Turn Observations Into Citizen Science
Carefully collected observations can become valuable scientific information when they are accurate, repeatable, and well documented. Citizen scientists can help researchers understand local environmental conditions and identify changes that deserve further investigation.
Start With One Waterway
Choose one nearby beach, river, lake, or stream and begin with simple observations. Visit regularly, record what you see, take photographs, and compare your observations over time.
For more practical science and environmental activities, explore the DIY section of The Science Online .
