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Validity of the WEPP model for predicting infiltration on irrigated lands /

agreement or correlation between measured data and predicted

Bibliographic Details
Main Author: Ngang, Fidelis Ndemah, 1962-
Format: Thesis eBook
Language:English
Published: [Place of publication not identified] : [publisher not identified] ; 1995.
Subjects:
Major agricultural engineering.
Online Access:Link to OAKTrust copy
Description
Summary:agreement or correlation between measured data and predicted
at Bushland, Texas. Model efficiency and correlation
coefficient methods were used to evaluate the degree of
established within this study. It is important to note that
fact that the infiltration parameter estimation techniques in
for infiltration volume were better than those for
Green and Ampt equation with ponding to compute infiltration.
in Bushland, Texas. The March 1994 version (version 94.300)
Infiltration data from simulated rainfall were collected at
infiltration in WEPP is to improve the parameter estimation
infiltration rate. The poor correlation between measured and
irrigated lands. However, the validity of the model to
of correlation between measured data and predicted results,
of field data, and not completely due to the inability of the
of the hydrologic component of the YVEPP erosion model for
of the WEPP erosion model was used to predict infiltration
predict infiltration rate on irrigated lands was not
predicted values for some of the data is explained by the
predicting infiltration on irrigated lands. WEPP uses the
procedures. Results indicated that WEPP model version 94.300
results may be partly due to inaccuracies in the collection
results. In general, validation results showed a wide range
the difference between the measured data and the predicted
the key to improving the prediction of runoff and
The objective of this research was to establish the validity
the USDA-ARS Conservation and Production Research Laboratory
using the best approximation of the soil physical conditions
values ranged from -0.843 to 0.950. Model predicted results
was valid for predicting cumulative infiltration volume on
WEPP are not good enough. Sensitivity analyses showed that
WEPP model to predict infiltration on irrigated lands.
with R values ranging from 0.825 to 0.997. Model efficiency
Item Description:"Major subject: Agricultural Engineering".
Vita.
Physical Description:xiv, 107 leaves : illustrations ; 28 cm.
Also available online.
Issued also on microfiche from Lange Micrographics.
Bibliography:Includes bibliographical references.