Sum interval rain totals, expose observation gaps and find the peak interval-average rate.
Use this tool
Preparing interactive controls…
Introduction & principle
Total=Σdepth; each interval rate=depth/duration. Covered duration sums observation intervals; event span includes gaps. Ordered non-overlapping intervals are required. This is not instantaneous intensity or a flood-risk model.
Worked example
2 mm in 1 hour followed by 3 mm in 0.5 hour totals 5 mm across 1.5 covered hours. The peak interval average is 6 mm/hour.
Detailed usage guide
1Use start_utc,end_utc,depth_mm CSV with totals for individual intervals.
2Enter explicit UTC start/end times in increasing, non-overlapping order.
3Read total, covered time, gap time and peak interval. Gaps remain unknown rather than being treated as zero rain.
Common problems & FAQ
Are cumulative gauge totals accepted?
No. Convert cumulative readings to interval differences first, accounting for resets and missing observations. Do not mix cumulative and interval values in this table.
