Public Works Engineering—Flood Control
Rainfall Maps
2 Year
Return Frequency
- 15 minute duration(302 KB PDF)
- 30 minute duration(297 KB PDF)
- 60 minute duration(295 KB PDF)
- 6 hour duration(311 KB PDF)
- 12 hour duration(296 KB PDF)
- 24 hour duration(304 KB PDF)
10 Year
Return Frequency
- 15 minute duration(304 KB PDF)
- 30 minute duration(297 KB PDF)
- 1 hour duration(302 KB PDF)
- 6 hour duration(297 KB PDF)
- 12 hour duration(310 KB PDF)
- 24 hour duration(304 KB PDF)
100 Year
Return Frequency
- 15 minute duration(312 KB PDF)
- 30 minute duration(297 KB PDF)
- 1 hour duration(302 KB PDF)
- 6 hour duration(297 KB PDF)
- 12 hour duration(310 KB PDF)
- 24 hour duration(304 KB PDF)
In 1999, the Engineering Division published the project report "Rainfall Intensity Duration Analysis, Salt Lake County, Utah". The project consisted of a temporal and spatial analysis of rainfall to determine rainfall intensity and duration for engineering and management purposes for return intervals of 2, 10 and 100 years. The report presented rainfall depth maps (isohyetal maps) for the duration and return frequency listed on the right
The report, by TRC North American Weather Consultants and Meteorological Solutions, Inc, is available for purchase at the Engineering Division office.
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