Document: NUREG-0800
Document ID: 9ec109d9-dfac-443f-a128-99771d0f5c88
Document Type: srp
Title: FLOODS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070100647.pdf
Revision Date: 2023-06
Chapter: 2
Section ID: 2.4.2
CFR Part: 
CFR Title: 

Content:
iew. In addition to describing flood history, this section of the SAR also determines the local intense precipitation on the site to estimate local flooding. Local intense precipitation is reported as a site characteristic used in site grading design. The review covers the following specific areas: 1. Local Flooding on the Site and Drainage Design A. The staff reviews the flooding of the site produced by local intense precipitation. Local intense precipitation may be estimated from relevant National Oceanic and Atmospheric Administration (NOAA) hydrometeorological reports (HMR). B. The staff reviews the design of the site drainage system, including grading to drain local intense precipitation away from safety-related SSC. 2. Stream Flooding A. The staff reviews the probable maximum flood (PMF) with coincident wind-induced waves, considering dam failure potential due to inadequate capacity, inadequate flood-discharge capability, or existing physical condition. B. The staff reviews ice jams, both independently and coincident with a winter probable maximum storm. C. The staff reviews tributary drainage area PMF potential. D. The staff reviews combinations of less severe river floods, coincident with surges and seiches. 3. Surges A. The staff reviews probable maximum hurricane (PMH) at coastal sites. B. The staff reviews the PMH wind translated inland and resulting wave action coincident with runoff-induced flood levels. C. The staff reviews probable maximum windstorm-induced (non-hurricane) storm surges and waves. D. The staff reviews combinations of less severe surges, coincident with runoff floods. 2.4.2-3 Revision 4 - March 2007 4. Seiches A. The staff reviews meteorologically induced seiches in inland lakes (e.g., Great Lakes and harbors) and seiches at coastal harbors and embayments. B. The staff reviews seismically induced seiches in inland lakes. C. The staff reviews seismically induced seiches by tsunami (seismic sea waves) on coastal embayments. D. The staff