نتایج جستجو برای: flood flow

تعداد نتایج: 502385  

Journal: :Environmental monitoring and assessment 2006
Juliet C Stromberg Sharon J Lite Tyler J Rychener Lainie R Levick Mark D Dixon Joseph M Watts

A portion of Arizona's San Pedro River is managed as a National Riparian Conservation Area but is potentially affected by ground-water withdrawals beyond the conservation area borders. We applied an assessment model to the Conservation Area as a basis for monitoring long-term changes in riparian ecosystem condition resulting from changes in river water availability, and collected multi-year dat...

2013
Jill Crossman Martyn N. Futter Paul G. Whitehead

In glacier-fed systems climate change may have various effects over a range of time scales, including increasing river discharge, flood frequency and magnitude. This study uses a combination of empirical monitoring and modelling to project the impacts of climate change on the glacial-fed Middle Fork Toklat River, Denali National Park, Alaska. We use a regional calibration of the model HBV to ac...

2004
CHRISTOPHER T. ROBINSON STEFAN AEBISCHER URS UEHLINGER

Spatial and temporal patterns of transported organic matter (seston) and macroinvertebrates (drift) and benthic macroinvertebrate densities were examined before, during, and shortly after each of a series of scheduled, experimental floods in a flow-regulated river in the Swiss National Park. Temporal patterns in the lateral transfer of seston, drift, and benthic macroinvertebrates were evaluate...

2006
Andreas Kurtenbach Steffen Möller Andreas Krein Wolfhard Symader

The spatial representativeness of gauging stations was investigated in two low-mountainous river basins near the city of Trier, southwest Germany. Longitudinal profiles during low and high flow conditions were sampled in order to identify sources of solutes and to characterize the alteration of flood wave properties during its travel downstream. Numerous hydrographs and chemographs of natural f...

2009
Sarka Blazkova Keith Beven

[1] In this study continuous simulation flood frequency predictions on the Skalka catchment in the Czech Republic (672 km, range of altitudes from 460 to 1041 m above sea level), are compared against summary information of rainfall characteristics, the flow duration curve, and the frequency characteristics of flood discharges and snow water equivalent using the generalized likelihood uncertaint...

Journal: :Water Resources Management 2022

Abstract The paper considers the problem of inverse flood routing in reservoir operation strategy. aim work is to investigate possibility determining hydrograph at upstream end based on required downstream using simplified open channel flow models. To accomplish this, linear kinematic wave equation, diffusive equation and Muskingum are considered. achieve end, an solution afore mentioned equati...

2008
L. Allan James Michael B. Singer

Natural physical conditions and the politics of flood management provide the historical context for structural flood control that underlies modern flood hazards in the Sacramento Valley. The valley is a broad, low plain with backswamp basins that were frequently inundated prior to Anglo-American settlement, continuing until the modern flood-control system was established. Early attempts to emul...

2001
Jay R. Lund

Economical integration of permanent and emergency flood control options is a long-standing problem in water resources planning and management. A two-stage linear programming formulation of this problem is proposed and demonstrated which provides an explicit economic basis for developing integrated floodplain management plans. The approach minimizes the expected value of flood damages and costs,...

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