The Cooperative Huntsville Area Rainfall Measurements (CHARM) network is comprised of volunteers who take daily rainfall measurements every morning. The composition of volunteers ranges from middle school students to PhD scientists. We'd love to have you join. The only requirements are a rain gauge, a computer with internet access, and a willingness to participate by checking your rain gauge each morning. No prior training or education is necessary, and there are some very excellent training materials online we can refer you to for a quick primer. If you live in Madison County, the east side of Limestone, or the north bit of Morgan, you'd fit nicely into the CHARM network. We are also part of a larger state and national network of rain gauges, CoCoRaHS (Community Collaborative Rain Hail and Snow network), and the data we collect is forwarded to them to be part of their effort as well.

If you do not have a gauge, we recommend the official CoCoRaHS gauge, which is available for purchase here.

My name is Kevin and I handle a lot of the day-to-day oversight of the CHARM network, web site, and database. If you're interested in joining CHARM or have any questions, feel free to drop me an email at Thanks for your interest!


Technical Contact and Page Curator: Kevin M. McGrath (
Responsible Official: Dr. Gary J. Jedlovec (

Last Updated: August 9, 2012