American-Sacramento basin

I'd be happy to help, but I need a few clarifications:

1. Where should I write this? What's the file path or project this belongs to? (I don't see a water/reservoir tracking project in your CLAUDE.md)

1. What format? Should this be:

• Markdown (.md)
• JSON
• A specific schema/structure
• Something else?

1. Full content of the note? Should I just capture the data you've provided, or is there additional context/analysis you want included?

Once you clarify, I'll write it right away.