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TWENTY-YEAR FLOOD [1 record]
Record 1 - internal organization data 1988-02-23
Record 1, English
Record 1, Subject field(s)
- Cartography
- Hydrology and Hydrography
Record 1, Main entry term, English
- 20-year flood
1, record 1, English, 20%2Dyear%20flood
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- twenty-year flood 1, record 1, English, twenty%2Dyear%20flood
proposal
- one-in-twenty year flood 1, record 1, English, one%2Din%2Dtwenty%20year%20flood
proposal
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Flood-risk maps are the primary tool that guides the sensible use of flood-prone lands. They indicate flood-risk areas, where floodwaters are likely to spread. ... The maps may also show the "20-year flood" and "100-year flood" levels (generally accepted terms for the statistical likelihood that every year there is a five per cent chance of the 20-year flood occurring, and a one per cent chance of the 100-year flood occurring at that location. 1, record 1, English, - 20%2Dyear%20flood
Record number: 1, Textual support number: 1 OBS
See the record for "one-in-a-hundred year flood". 1, record 1, English, - 20%2Dyear%20flood
Record 1, French
Record 1, Domaine(s)
- Cartographie
- Hydrologie et hydrographie
Record 1, Main entry term, French
- crue à récurrence de 20 ans
1, record 1, French, crue%20%C3%A0%20r%C3%A9currence%20de%2020%20ans
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Les cartes des risques d'inondation constituent le principal outil servant à orienter l'utilisation judicieuse des terres inondables. Elles précisent les zones inondables, soit où l'eau de crue est susceptible de se répandre. (...) Les cartes peuvent aussi illustrer les niveaux des crues à récurrence de 20 ans et de 100 ans (termes généralement reconnus pour représenter la probabilité statistique qu'il y a, chaque année, 5 % de chances qu'une crue à récurrence de 20 ans survienne et 1 % de chances qu'une crue à récurrence de 100 ans se produise à cet endroit). 1, record 1, French, - crue%20%C3%A0%20r%C3%A9currence%20de%2020%20ans
Record number: 1, Textual support number: 1 OBS
Voir fiches "crue décennale" et "crue centenaire". 1, record 1, French, - crue%20%C3%A0%20r%C3%A9currence%20de%2020%20ans
Record number: 1, Textual support number: 2 OBS
Sources : Divers dépliants d'Environnement Canada portant sur les inondations. 1, record 1, French, - crue%20%C3%A0%20r%C3%A9currence%20de%2020%20ans
Record 1, Spanish
Record 1, Textual support, Spanish
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