Free
- Google forms: Use this system for basic data gathering. It can automatically put your results into a spreadsheet.
- Water Rangers: Dedicated to helping water monitoring groups collect and organize water quality data. Customize your form to the parameters your volunteers are testing and ensure your data is shareable (via downloadable spreadsheets, embeddable results on your own website, etc).
Paid
- ArcGIS Survey 123: Integrates into your ArcGIS for easy mapping. You can create your own dedicated ‘app’ for data collection.