国立研究開発法人 国際農林水産業研究センター | JIRCAS

Effects of Hydrological Factors on the Estimation of Storm Runoff Loading in a Large River Watershed

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

It is important to accurately evaluate storm runoff loading for preserving the water quality of stagnant water bodies. In this study, we analyzed the effects of hydrological factors on the estimation of storm runoff loading using hourly observed data (rainfall, river flow and water quality) at 2 points located in the center of the Yahagi River basin, and applied simple regression models to estimate the loading. Firstly, we observed close relationships among rainfall, river flow, water quality and loading. Secondly, by evaluating the differences between estimated and observed loading rates during the rainy season, we proposed conditions for upgrading the accuracy of loading estimation. Thirdly, we analyzed the factors that affect storm runoff loading from hydrological aspects, and identified relationships between the cumulative loading residual and factors such as preceding dry weather period. Finally, some conditions for the estimation of storm runoff loading are outlined, which include improving the application of the regression models to estimate the loading.

刊行年月2002-01-01
作成者Junji TAKAHASHI Ikuo YOSHINAGA Hitoshi HASEBE Eisaku SHIRATANI
著者キーワード

water quality

regression model

precision of loading estimation

residual value

between estimated value and actual value

preceding dry weather period

公開者Japan International Research Center for Agricultural Sciences
データ作成日2002-01-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
36
1
開始ページ37
終了ページ44
権利Japan International Research Center for Agricultural Sciences
言語eng