Home Of The Original Floating Rain Gauge®

Tips & Troubleshooting

Here's where you can learn all there is to know about the use and care of your rain gauge. If you have questions about shipping, returns or any other questions not answered here, head over to our FAQs page

General Tips:

For best results, place your rain gauge at least 20' from buildings, trees or other obstructions. Try to keep it as straight as possible.

To check your gauge’s calibration, pour 1.1 fluid ounces (or 7 teaspoons) of water into the collection flute. The tube should rise to show 1 inch. Be aware that local rainfall amounts can vary drastically, even over a small area. Don’t compare your readings with your neighbor’s rain gauge! Have you ever driven home from work in a deluge, only to find your driveway bone dry? If your neighbor’s rain gauge says 3 inches and yours says 1 inch, it’s probably because he got 3 inches and you got 1 inch!

If the tube is not rising, check the following:

Has the foam float deteriorated? That can happen sometimes. You'll need to replace it. Don't worry; it's easy to do. Order the parts here

Be sure the foam float is in place, even with the bottom of the measurement tube. 

Is there debris of any kind in the tube? Mold, dirt and other funk can impede the smooth operation of the rain gauge. Use a SOFT bottle brush to clean the inside of the tube. Do not use WD-40 or other lubricants inside the rain gauge!


Occasionally rinse out the measurement tube and copper or resin flute. You can clean the blue tube and the inside of the flute with warm, soapy water. Rinse thoroughly before putting it back outside.

Want a shiny, fancy-looking copper flute? You can use copper polish to shine your rain gauge. And here's a cool tip: ketchup works GREAT. Seriously. It does.

Removing and Replacing the Foam Float: