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Description: The hydrology of a 26.1 km2 rural Quebec watershed was investigated. Thirty-one rainfall-runoff events were used in the analysis. The average time of concentration (te>, lag time (tl), and time to peak (tp) for these events were measured as 7.4, 8.5, and 13.1 h, respectively. The U.S. Soil Conservation Service and Airport equations provided the best estimates of tc (6.1 and 5.9 h, respectively), though all equations underestimated tc• Lag time and tp were variable and related to storm duration. Equations describing relationships between peak discharge, antecedent flow, total rainfall, and surface runoffwere developed. Surface runoffwas also correlated to event rainfall and the 14-day antecedent precipitation index. All rainfall-runoffrelationships demonstrated strong correlation. Peak and antecedent flow appeared to be correlated to the 30-minute maximum rainfall intensity. These attributes characterize rural watersheds and provide the basis for modelling their hydrological responses. Keywords: antecedent flow, lag time, peak flow, precipitation, rainfall intensity, storm duration, surface runoff, time of concentration, time to peak.

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Citation: J. Perrone, C.A. Madramootoo and P. Lapp 1998. HYDROLOGIC CHARACTERISTICS OF AN AGRICULTURAL WATERSHED IN RURAL QUEBEC. Canadian Agricultural Engineering 40(2):79-88.
Volume: 40
Issue: 2
Pages -
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Date: 1998
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Type: Text.Article
Format: PDF
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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