The well is powered by solar panels and connected over satellite, and it has a depth sensor at the base that sends measurements every hour on the hour. It's been running since 2003. This project superimposes every year with data on each other, with the current year highlighted. This allows for users to clearly see how full the aquifer is, compared with earlier this year, natural levels, and all previous years.
The project is hosted by Cloudflare, and is located at watertable.nove.dev
For more details, open the main.ipynb document.
The most recent code is in generate.py, and that's what's used to update the website, but the notebook has useful information.
GitHub's Jupyter notebook rendering is a little flaky, so you may have to run it in your local installation.