Why does the symptom appear during heavy leaf fall and rain? The safest answer begins by recording location, trigger and timing before assigning a cause.
What the question is testing
Seasonal debris can redirect roof water and overflow near foundations. The question becomes more useful when it separates what happened first from what was noticed later.
A practical comparison
Record heavy leaf fall and rain, the first affected location and the comparable areas that stayed normal. Repeat the observation only under safe, comparable conditions and note what stayed unchanged.
Limits and next step
Do not access unsafe roofs or work near power lines, ice or unstable surfaces. Active leakage, structural deflection or extensive decay needs qualified inspection. Use the connected atlas guide to build a bounded evidence packet and a clear professional handoff when needed.
