Daily discharge estimation at ungauged river sites using remote sensing. Issue 3 (17th December 2012)

• Record Type: Journal Article
• Authors: Birkinshaw, S. J.; Moore, P.; Kilsby, C.G.; O'Donnell, G. M.; Hardy, A.J.; Berry, P. A. M.
• Is Part Of: Hydrological processes. Volume 28:Issue 3(2014:Jan.)
• Page Start: 1043
• Page End: 1054
• Publication Date: 2012-12-17
• Subjects: Hydrology -- Periodicals; Hydrology -- Research -- Periodicals; Hydrologic models -- Periodicals; Hydrological forecasting -- Periodicals; 631.432
• DOI: 10.1002/hyp.9647
• Languages: English
• ISSNs: 0885-6087

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>A methodology is developed to estimate daily river discharge at an ungauged site using remote sensing data. Use is made of ERS‐2 and ENVISAT satellite altimetry to provide a time series of river channel stage levels and longitudinal channel slope and Landsat satellite imagery to provide a range of channel widths over a 50 km reach of river. The data are substituted into the Bjerklie <italic>et al</italic>. (<xref ref-type="link" rid="hyp9647-bib-0007">2003</xref>) equation, which is based on the Manning's resistance equation and has been developed using a global database of channel hydraulic information and discharge measurements. Our methodology has been applied at three locations on the Mekong and Ob Rivers and validated against daily <italic>in situ</italic> discharge measurements. The results show Nash–Sutcliffe efficiency values of 0.90 at Nakhon Phanom and 0.86 at Vientiane on the Mekong, and 0.86 at Kalpashevo on the Ob. Copyright © 2012 John Wiley &amp; Sons, Ltd.</p> </abstract>