National Engineering Handbook: Chapter 4 - Storm Rainfall Depth and Distribution
Natural Resources Conservation Service, 2019
NRCS Title 210, National Engineering Handbook, Part 630, Chapter 4 (210-NEH-630-4), applies to specific rain events and their analyses as well as monthly and annual rainfall. Chapter 4 also provides a brief account of the sources, variability, and preparation of storm rainfall or precipitation data. This chapter is used with 210-NEH-630-10, “Estimation of Direct Runoff from Storm Rainfall” (NRCS 2004); 210-NEH-630-16, “Hydrographs” (NRCS 2007); 210-NEH-650-2, “Estimating Runoff and Peak Discharges” (NRCS 1993); and 210- NEH-630-21, “Design Hydrographs” (NRCS 2019b) for estimating the runoff volumes and peak discharges needed to size conservation and water control structures. Probable maximum precipitation (PMP) is described in 210-NEH-630-21, (NRCS 2109b), and Technical Release (TR) No. 60, “Earth Dams and Reservoirs” (NRCS 2019a). Various National Oceanic and Atmospheric Administration (NOAA) documents cover areal reduction of rainfall.
Revision ID: 5872
Revision Date: 12/16/2022