New Tool Added to STEGIS: Extract Stage–Area–Volume Relation

I’ve just completed a brand-new tool in STEGIS that allows users to extract Elevation–Area and Elevation–Volume relationships for dam storage using a simple polygon drawn on the DEM. 📐🌊
But I didn’t stop there.
To help visualize how the reservoir behaves at different water levels, I’ve also added a powerful feature that fills the dam with virtual water and generates a depth map for each elevation level — fully visualized inside the STEGIS environment. 💧🗺️


💡 How this tool can help you:
✅ Identify the maximum water extent when the reservoir is full.
✅ Set up accurate initial conditions when simulating floods where the dam is already filled to capacity — or to any desired water level.
✅ Evaluate dam storage capacity across a range of elevations to support planning and operational decisions.
✅ Visualize potential water coverage in surrounding terrain at specific stages of filling.


🎥 Check out the video to see it in action!
👉 Have more ideas on how this tool could be used?
I’d love to hear your thoughts — drop them in the comments!