ISSN 1058-3912
Electronic journal of the International Association
for Environmental Hydrology
On the World Wide Web at http://www.hydroweb.com
JEH Volume 6 (1998), Paper 7, July 1998
Posted July 25, 1998
AN INVESTIGATION OF CURVE NUMBER APPLICABILITY TO WATERSHEDS IN
EXCESS OF 25000 HECTARES (250 KM2)
R. Roy Johnson
Truro, Nova Scotia, Canada
ABSTRACT
The objective of this study was to apply a continuous hydrologic model
that uses the Curve Number method to a large undeveloped watershed, calibrate
the model and obtain parameter values; and, from the acquired information,
to attempt to determine the general applicability of the Curve Number method
to large watersheds. The results are generally favorable, with simulated
flow results typically close to actual recorded values of flow. The general
results of flow simulation are within 8 percent (simulated flow versus
recorded flow). Given the number of potential sources of error other than
catchment size, these results tend to indicate the appropriateness of the
model for use on these study watersheds, as well as its applicability to
other large watersheds.
Reference: Johnson, R. R..; An Investigation of Curve Number
Applicability to Watersheds in Excess of 25000 Hectares
(250 km2), Journal of Environmental Hydrology, Vol. 6, Paper
7, July 1998.
R. Roy Johnson, M.A.Sc.
184 Young Street
Truro, NS B2N 3X7
Canada
E-mail : royjohnson@my-deja.com