Results 261 to 270 of about 38,991 (302)

Effect of rainfall variability on streamflow simulation

Water Resources Research, 1969
Three recording rain gages in a 9.7‐square‐mile basin in southern California were used with a deterministic rainfall‐runoff model to simulate flood hydrographs and peaks and to assess the effects of data errors on simulation results. Bias in the estimation of effective basin rainfall seemed to result in curve fitting parameter adjustments which ...
D. R. Dawdy, J. M. Bergmann
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Streamflow Generation by Variable Source Area

1988
For many years, hydrologists and engineers alike have attempted to describe and model the processes that generate streamflow from rainfall. Modern understanding of runoff processes expanded rapidly in the twentieth century. Horton (1933) proposed that the soil surface partitions rainfall into overland flow and ground water. Simply stated, when rainfall
A. R. Hibbert, C. A. Troendle
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Model Flow Duration and Streamflow Variability

Water Resources Research, 1971
A simple flow duration model is postulated by using data from 120 gaging stations in Illinois. On the basis of model flow duration, a region can be divided into hydrologic divisions. For each division, the coefficient and exponent in the model have distributions with respect to percent time.
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Winter streamflow variability, Yukon Territory, Canada

Hydrological Processes, 2002
AbstractKnowledge of winter streamflow regimes is required in northern catchments to evaluate water supply and to assess the vulnerability of aquatic habitat. The objective of this study was to explore the nature and causes of winter streamflow variability in northern rivers through examination of a limited number of case studies involving intensive ...
R. D. Moore, A. S. Hamilton, J. Scibek
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Wavelet analysis of variability in annual Canadian streamflows

Water Resources Research, 2004
Wavelet analysis is used to identify and describe variability in annual Canadian streamflows and to gain insights into the dynamical link between the streamflows and the dominant modes of climate variability in the Northern Hemisphere. Results from applying continuous wavelet transform to mean annual streamflows from 79 rivers selected from the ...
Paulin Coulibaly, Donald H. Burn
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Implications of Streamflow Variability and Predictability for Lotic Community Structure: A Regional Analysis of Streamflow Patterns

Canadian Journal of Fisheries and Aquatic Sciences, 1989
Long-term discharge records (17–81 yr) of 78 streams from across the continental United States were analyzed to develop a general quantitative characterization of streamflow variability and predictability. Based on (1) overall flow variability, (2) flood regime patterns, and (3) extent of intermittency, 11 summary statistics were derived from the ...
N. LeRoy Poff, J. V. Ward
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Streamflow variability in the Southern Appalachians and atmospheric teleconnections

River Research and Applications, 2010
ABSTRACTWe have examined streamflow variability in the Southern Appalachian region of the United States for the period 1950–2009. In particular, we have analysed the monthly discharge time series at two stations along the following rivers in North Carolina: (1) Little Tennessee River (LTR) near Prentiss and (2) French Broad River in Asheville.
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Interannual variability and interdecadal trends in Hudson Bay streamflow

Journal of Marine Systems, 2011
Abstract This study investigates the interannual variability and interdecadal trends in streamflow input to Hudson Bay (including James Bay) over 1964–2008. The 23 rivers chosen for this study span a maximum gauged area of 2.54 × 106 km2 and collectively transport 522 km3 of freshwater to Hudson Bay each year.
Stephen J. Déry, Theodore J. Mlynowski, Marco A. Hernández-Henríquez, Fiammetta Straneo   +3 more
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Precipitation and Streamflow Variability in Northwestern Oklahoma, 1894-2003

Physical Geography, 2006
This paper utilizes time-series analysis to examine precipitation and streamflow variability in northwestern Oklahoma over the period 1894-2003. Trends and periodicities in the hydroclimatic variables were investigated using, respectively, Mann-Kendall test and continuous wavelet transform (CWT) methods.
Joseph T. Zume, Aondover Tarhule
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Streamflow Variability in the United States: 1931–78

Journal of Climate and Applied Meteorology, 1985
Abstract Systematic modes of spatial and temporal variation in a 48-year record of streamflow are defined using principal components. The components were calculated from a matrix of annual streamflow departures for 106 grid cells covering the United States in the years 1931–78.
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