Free homeowner resource
Basement storm observation log
Observe only from a safe, dry location. Record what you saw rather than assigning a cause. Do not enter standing water, disable equipment or disturb materials to complete this log.
You can print a blank sheet or type notes first. Notes are not sent or saved by this worksheet and may be lost when you leave or reload. Keep your own copy.
Date and time observed
Rain timing (your observation, not a weather measurement)
First visible water location
When it appeared relative to rain or plumbing use
Other areas affected
Pump or alarm behavior observed safely
Exterior runoff observed safely
Dry-weather comparison
Previous repair / covered area
Photo reference kept privately
Unknowns and questions for an assessor
One storm or dry period cannot prove a source or a repair outcome. Bring the record to an appropriate assessment.