Flow duration curves and base flow filter
Geostatistical prediction of flow–duration curves in an index flow framework
... period-of-record flow–duration curve (FDC) describes the percentage of time (duration) in which a given streamflow was equaled or exceeded over an historical period of ...annual flow, or mean ...
16
Analytical flow duration curves for summer streamflow in Switzerland
... Abstract. This paper proposes a systematic assessment of the performance of an analytical modeling framework for streamflow probability distributions for a set of 25 Swiss catchments. These catchments show a wide range ...
13
Calibration of hydrological models using flow duration curves
... different flow magnitudes, (3) influ- ence of unknown input/output errors and (4) inability to eval- uate model performance when observation time periods for discharge and model input data do not ...using ...
23
Regional flow duration curves for ungauged sites in Sicily
... Abstract. Flow duration curves are simple and power- ful tools to deal with many hydrological and environmental problems related to water quality assessment, water-use as- sessment and water ...
9
Regional Flow Duration Curves for Seyhan and Ceyhan Basins
... The Flow duration curve (FDC) is one of the most fundamental pieces of information that feeds into the design of a low-flow, hydropower, water supply and pollution ...FDC, flow at any time ...
8
Application of Parametric Based Framework for Regionalisation of Flow Duration Curves
... stream flow data may necessarily not have any prior knowledge of the quality control measures applied in their generation, therefore, conclusions drawn most often times may not be effective as ...stream ...
11
Spatially-smooth regionalization of flow duration curves in non-pristine basins
... A the catchment area in km 2 . Using h in the additive model structure (Eq. 1) and considering only descriptors that rep- resents area-averaged values (e.g. mean basin elevation, spa- tial average of annual rainfall, ...
9
Prediction of Flow Duration Curves for Ungauged Basins with Quasi Newton Method
... of flow-duration-curves (FDC) is an important task for water resources planning, management and hydraulic energy ...insufficient flow data or without flow data may be determined by ...
14
Regional water balance modelling using flow duration curves with observational uncertainties
... rating curves that had been classified as having an accept- able or good quality in a previous Honduran water-resource project and the rating-curve equations reported in that project (Flambard, 2003) were used ...
21
A region of influence approach to predicting flow duration curves within ungauged catchments
... mean flow is more susceptible to sampling error than the other candidate ...standardised flow duration curve ...standardised flow duration ...mean flow in the United Kingdom, ...
12
Regional water balance modelling using flow-duration curves with observational uncertainties
... Received: 11 November 2013 – Published in Hydrol. Earth Syst. Sci. Discuss.: 20 December 2013 Revised: 23 May 2014 – Accepted: 11 June 2014 – Published: 14 August 2014 Abstract. Robust and reliable water-resource mapping ...
23
Development of Flow Duration Curves for Malaprabha and Ghataprabha sub basins of Krishna River
... stream flow hydrograph that regulate ecological processes in riverine ecosystem includes magnitude, frequency, duration, timing, and rate of ...and duration may be at least in part may be understood ...
5
GROUNDWATER FLOW NETS Graphical Solutions to the Flow Equations. One family of curves are flow lines Another family of curves are equipotential lines
... - flow lines parallel no-flow boundaries - streamlines are perpendicular to equipotential lines - equipotential lines are perpendicular to no-flow boundaries - form squares by intersecting stream and ...
14
A comparative assessment of rainfall–runoff modelling against regional flow duration curves for ungauged catchments
... the total number of flow observations. The best parameter set for each study catchment was obtained from minimisation of the OBJ using the Monte Carlo simulations described below. To determine sufficient runs for ...
15
Bias correction of simulated historical daily streamflow at ungauged locations by using independently estimated flow duration curves
... Abstract. In many simulations of historical daily streamflow distributional bias arising from the distributional properties of residuals has been noted. This bias often presents itself as an underestimation of high ...
18
Exploring the physical controls of regional patterns of flow duration curves – Part 1: Insights from statistical analyses
... Although Yokoo and Sivapalan (2011) carried out prelimi- nary analyses on a few selected catchments within the United States to demonstrate the feasibility of their approach, their results need further validation and ...
12
Direct numerical simulation of turbulent trailing edge flow with base flow control
... the curves, when plotted against volume ow rate in this manner, illustrates that vol- ume ow rate is the key ...parameter. Base pressure drops sharply when suction is ...corresponding base ...
9
The effects of flow rate changes on filter performance
... Gradual flow changes The final variable investigated using the 0.6m filter bed was a gradual flow ...50% flow increases after ...the filter performs well. However, when a 25% gradual ...
318
Prediction of Flow Duration Curve for Seasonal Rivers in Iraq
... low flow regimes at an ungauged site, particularly by classifying catchments into physiographic types and transferring flow data between catchments in the same ...regional curves and time series ...
14
Likelihood and duration of flow breakdown: modeling the effect of weather
... empirical curves calculated from the Kaplan–Meier PL method are also included on each cumulative distribution function ...given flow rate under rain is higher than under no ...
10