Logs rain events and inspections against configurable permit rules, and shows which qualifying storms still need a post-rain inspection and when the next routine inspection is due. Runs entirely offline; all data persists in this browser via localStorage.
Use limits: Permit requirements vary — the Construction General Permit (federal or your state's version) and the project SWPPP define qualifying storm thresholds, inspection frequencies, deadlines, and documentation. Set the rules below to match your permit, and remember: the signed inspection form is the compliance record; this tracker is the thing that reminds you to go create it on time.
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Last inspection (any type)
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Next routine inspection due
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Qualifying events awaiting inspection
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Rain Events
Date
Inches
Qualifying
Inspection
Note
No rain events logged.
Inspections
Date
Type
Note
No inspections logged.
How the Status Is Derived
Matching logic
A rain event at or above the threshold is "qualifying." It's considered covered if an inspection of any type is logged on a date from the event date through the event date plus the due window; otherwise it shows as needing inspection (overdue once the window has passed). The next routine due date is the most recent inspection date plus the routine interval. The logic is deliberately simple and visible — if your permit counts things differently (working days, combined events, stabilized-site exemptions), adjust behavior, not expectations.
Why contemporaneous logging matters
Stormwater enforcement runs on records: a rain log kept daily, matched to signed inspection forms, is the difference between a clean audit and a notice of violation built on gaps.
Log the rain even when it doesn't qualify — a string of 0.2-in days that never triggers an inspection is itself a record that you were watching.
Forecast-triggered requirements (pre-storm inspections, REAP-type action plans in some states) are on you to track from the forecast — this tool records that you did them via the pre-storm inspection type.
References
EPA Construction General Permit (or the state-issued equivalent) — qualifying events, frequencies, and deadlines. https://www.epa.gov/npdes/stormwater-discharges-construction-activities
The project SWPPP — site-specific inspection requirements (governing document).