CSBE-SCGAB

Modellsation hydrologique de la qualite de l'eau d'un bassin versant agrjcole au Quebec

Authors: C. Bernier et J. Oallichand
Description: Degradation of surface water quality is an important problem in Quebec. In agricultural areas, pollution sources are related to agricultural practices. Hydrological modeling is a tool which can help establishing less polluting farming practices. The HSPF model was tested for a period of two years on a 5.3 km2 agricultural watershed and results presented on a weekly basis for outflow, sediment, total nitrogen, nitrate and nitrite, and ammonium. The first year served for calibration and yielded correlation between observed and simulated values of 0.87,0.88,0.95,0.96 and 0.62 for outflow, sediment, total nitrogen, nitrate and nitrite, and ammonium. The second year was used for verification and correlation coefficients of 0.66, 0.54, 0.63, 0.73, and 0.62 were obtained for the same variables. For the two years of the study, HSPF underestimated outflow by 18%, sediment by 38%, total nitrogen by 25%, and overestimated nitrate and nitrite by 23%, and ammonium by 45%.
Citation: C. Bernier et J. Oallichand 1999. MODELlSATION HYDROLOGIQUE DE LA QUALITE DE L'EAU
D'UN BASSIN VERSANT AGRJCOLE AU QUEBEC. Canadian Agricultural Engineering 41(4):213-220.
Volume: 41
Issue: 4
Publisher: Canadian Society for Bioengineering
Date: 1999
Type: Text.Article
Format: PDF
Coverage: Canada
Language 1: en
Rights: Canadian Society for Bioengineering
Located in: Volume 41 (1999)