Hi Fiona, @srgdamiano may be able to help you with this. There is also a pathway within the Monitor My Watershed site itself for making sensor requests. I’ll describe it here in case it is also helpful to others.
When adding a new sensor to a site on MonitorMW, if you don’t see what you need in the Add New Sensor modal window, scroll to the bottom of the modal and click the link to send an email request to the MonitorMW team. If it’s a sensor you’ve already added to your site, navigate to the Manage Sensors page and click the Edit icon on the desired sensor. Scroll to the bottom of the Update Sensor modal window, and you’ll find the same email link.
I hope this helps!