Bolduc, Samuel 
ORCID: https://orcid.org/0009-0007-5965-5094; Mailhot, Alain ORCID: https://orcid.org/0000-0002-5479-1421 et Talbot, Guillaume
(2024).
Estimation of the time of concentration of small watersheds located in Northeastern North America.
Hydrological Sciences Journal
, vol. 69
, nº 13.
pp. 1765-1776.
DOI: 10.1080/02626667.2024.2387155.
Résumé
The time of concentration is an important concept in hydrology. It provides a characteristic hydrologicalresponse time (CHRT) useful in many applications. Estimation of the time of concentration is challengingbecause small watersheds (<100 km²) with sub-daily flow and precipitation records are uncommon. Manypractitioners therefore use empirical equations developed from watersheds exposed to differentclimates and with different attributes. The main objective of this study is to develop an approach toestimate the CHRT from physiographic characteristics for small watersheds located in Ontario, Québecand the northeastern USA. Regression trees are used to identify the physiographic characteristicsassociated with CHRT. The fraction of lakes and wetlands was identified as the most significant attributerelated to CHRT, followed by the ratio between the main watercourse length and the square root of themain watercourse slope. Uncertainties on estimated CHRT values based on regression tree are alsoprovided.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | time of concentration; time to peak; small watersheds; rational method; regression tree; lakes and wetlands |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 08 nov. 2024 21:45 |
| Dernière modification: | 08 nov. 2024 21:45 |
| URI: | https://espace.inrs.ca/id/eprint/15989 |
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