Rainfall runoff. Medical search. Frequent questions

inproceedings{HIC2018:Study_on_Optimization_of, author = {Satoru Oishi and Toshihiko Tahara and Mariko Ogawa}, title = {Study on Optimization of the Operation of Dams Using Ensemble Prediction and a Distributed Rainfall-Runoff Model}, booktitle = {HIC 2018. (easychair.org)

the gridded SP and gridded IS approaches are used for predicting runoff at each 0.05° × 0.05° grid cell for continental Australia, which is then aggregated for each catchment. (copernicus.org)
This study (1) determines the most sensitive parameters that affect the catchment flow, (2) estimates monthly and daily flows of the basin from the available meteorological stations data, (3) calibrates and validates the simulated and observed flow data for different hydrological stations located in the basin, and (4) determines the total amount of surface runoff and water yield in the basin. (iyte.edu.tr)
When flood discharge data records are missed, there are many approaches to estimate runoff depth and volume based on soil and surface properties of catchment area. (scirp.org)
CN is stable conceptual method for predicting of direct runoff depth using storm rainfall intensity, land use and soil hydrological properties of a catchment. (scirp.org)
Outline the physical processes that produce floods, including the hydrological cycle, extreme rainfall, antecedent catchment moisture/catchment losses, catchment features and future climate change. (edu.au)

Concretely, first, we investigated that it could estimate the accuracy of forecasted accumulated rainfall based on Global Spectral Model (GSM) by adding the information of spreads calculated by Weekly Ensemble Prediction System (WEPS) in the Yodo river basin. (easychair.org)
As a result, peak discharge in Hirakata point was reduced than normal operation in case of rainfall prediction was accurate. (easychair.org)
2023. "The Revised Curve Number Rainfall-Runoff Methodology for an Improved Runoff Prediction" Water 15, no. 3: 491. (mdpi.com)
The results show that the runoff prediction accuracy of genetic programming based tool, measured in terms of root mean square error and correlation coefficient, is reasonably high. (upenn.edu)

Research was conducted to determine the effects of management practices and precipitation on herbicide loss in surface water runoff. (bioone.org)
Some plots received only natural precipitation, whereas others received natural precipitation plus additional precipitation from a rainfall simulator. (bioone.org)
Lower preplant rainfall in 2000 resulted in sharply reduced runoff losses despite postplant precipitation similar to that in 1999. (bioone.org)
Among these, GWQMN.gw (Treshold depth of water in the shallow aquifer required for return flow to occur ), SMTMP.bsn (Snow melt base temperature), CN2.mgt (SCS runoff curve number II), PLAPS.sub (Precipitation lapse rate), and HRU_SLP.hru (Average slope steepness) are found to be the most sensitive parameters. (iyte.edu.tr)
For inputs, different combinations of precipitation inputs including current rainfall, pervious day rainfall and two previous days were used. (ac.ir)
Surface runoff is defined as precipitation (rain, snow, sleet, or hail) that reaches a surface stream without ever passing below the soil surface. (wikipedia.org)
Using self-organizing maps and wavelet transforms for space-time pre-processing of satellite precipitation and runoff data in neural network based rainfall-runoff modeling. (ac.ir)

This progress report outlines the main principles for the development of a simple conceptual rainfall-runoff model at the Swedish Meteorological and Hydrological Institute. (iwaponline.com)
GP was trained to simulate runoff from a conceptual rainfall-runoff model, Storm Water Management Model (SWMM), which was first calibrated using Shuffled Complex Evolution (SCE) algorithm. (upenn.edu)
Thus, GP coupled with a robust optimisation scheme such as SCE is a viable complementary tool to traditional conceptual rainfall-runoff models. (upenn.edu)
Rainfall-runoff modeling using conceptual, data driven, and wavelet based computing approach. (ac.ir)
This study investigates lithologic control on parameters of the conceptual rainfall-runoff model and runoff characteristics through the construction of Xinanjiang rainfall-runoff models in different subwatersheds with different lithologies located in the Xiangxihe River watershed. (sustech.edu.cn)

General Review of Rainfall-Runoff Modeling: Model Calibration, Data Assimilation, and Uncertainty Analysis, in Hydrological Modeling and Water Cycle, Coupling of the Atmospheric and Hydrological Models. (ac.ir)
Al-Shrafany, DMS , Rico-Ramirez, MA & Han, D 2012, ' Calibration of Roughness Parameters using Rainfall Runoff Water Balance for Satellite Soil Moisture Retrieval ', Journal of Hydrologic Engineering , vol. 17, pp. 704 - 714. (bris.ac.uk)

Runoff Modelling and forecasting. (smhi.se)
In this study, a new methodology of rainfall-runoff modelling using the powerful clustering capability of the self-organising map (SOM), unsupervised artificial neural networks, is proposed as a viable approach for harnessing the multivariate correlation between the typically long record rainfall and short record runoff in such basins. (iwaponline.com)
Use of the gridded IS approach together with rainfall-runoff modelling for predicting runoff on a continental scale is highly recommended. (copernicus.org)
Li, H. and Zhang, Y.: Regionalising rainfall-runoff modelling for predicting daily runoff in continental Australia, Hydrol. (copernicus.org)
Rainfall-runoff modelling, John Wiley, 2002. (bme.hu)
Using the derived information within the hydrological modelling system, the runoff depth was predicted for an assumed severe storm scenario. (scirp.org)
Design topics covered will be selected from: flood frequency analysis, determination of design rainfall intensity and hyetographs, peak flow estimation, design hydrograph estimation, groundwater process and modelling, and drought risk analysis/yield hydrology. (edu.au)

The methodology was applied to the inadequately gauged Osun basin in southwest Nigeria for the sole purpose of extending the available runoff records and, through that, reducing water resources planning uncertainty associated with the use of short runoff data records. (iwaponline.com)
SWAT model is applied to Kabul River Basin (KRB) located in Afghanistan to assess the runoff. (iyte.edu.tr)
The sediment concentration and volume of the reconstructed hypercontracted events are not well corrected with the magnitude of the rainfall event, suggesting the important role played by variable sediment availability and connectivity at basin scale. (lincoln.ac.uk)
The land area producing runoff that drains to a common point is called a drainage basin. (wikipedia.org)
Research on the influence of land use changes and erosion and flood control measures on a reduction of harmful effects of extreme rainfall-runoff events has occourred at the experimental Němčický stream basin since 2005. (pjoes.com)
In order to advance this important, in this study, a combination of linear programming, cross-wavelet transform and Kalman filter as a control model for the analysis of nine compound rainfall and runoff events were used in Sufi Chay Basin. (ac.ir)

In this study, stormwater runoff from the Lake Soyang watershed was monitored during four rainfall events at 10 locations throughout 2016. (mdpi.com)
These temporary closures were implemented due to the heavy rainfall and stormwater runoff on Sunday, July 16, which saw some areas receiving as much as nearly six inches of rain. (ny.gov)

Surface runoff, channel activation and sediment transport processes in desert environments have been convincingly shown to strongly depend on the duration and intensity of local and convective rainfall events. (lincoln.ac.uk)
Accounting for these processes in hydrological models is necessary to simulate the response of rivers to rainfall events, and to forecast floods and droughts in lowlands. (wur.nl)
Furthermore, runoff can occur either through natural or human-made processes. (wikipedia.org)

It is distinct from direct runoff, which is runoff that reaches surface streams immediately after rainfall or melting snowfall and excludes runoff generated by the melting of snowpack or glaciers. (wikipedia.org)

The occurrence of heavy rainfall events is expected to undergo significant changes under increasing anthropogenic forcing. (uni-koeln.de)

Also the most increase and decrease in monthly runoff volume has been happened at in June and November at the most scenarios. (envirobiotechjournals.com)

2004. Modeling of the daily rainfall-runoff relationship with artificial neural network. (ac.ir)
Comparative study of different wavelet based neural network models for rainfall-runoff modeling. (ac.ir)

A field runoff experiment was conducted in 1999 and 2000 in Manhattan, KS. (bioone.org)
Here we present a sub-decadal reconstruction of enhanced rainfall events for the past 2000 years from the Southern Carpathians, Romania using peat geochemistry. (uni-koeln.de)

The discharge or runoff which ousts from a watershed is important. (ac.ir)
Example of a discharge peak forecast issued at four times (colors), using radar rainfall nowcasting (panel b shows whether different nowcasting algorithms lead to threshold exceedance). (wur.nl)
It has been documented by obtained results of rainfall and discharge gauging and by water sample analyses that sediment transport significantly corresponds with the cover efficiency of agricultural crops. (pjoes.com)
This paper tackles the last of these: errors in discharge measurements used to calibrate a rainfall-runoff model, caused by stage-discharge rating-curve uncertainty. (uea.ac.uk)
Defining rainfall-runoff relationship leads to calculate flood properties such as runoff depth, peak discharge, runoff speed, and runoff volume. (scirp.org)

Numerous regionalisation studies have been conducted to predict the runoff time series in ungauged catchments. (copernicus.org)
This study uses four regionalisation approaches, including spatial proximity (SP), gridded SP, integrated similarity (IS) and gridded IS, to regionalise two rainfall-runoff models (SIMHYD and Xinanjiang) for 605 unregulated catchments distributed across Australia. (copernicus.org)
The two rainfall-runoff models show consistent regionalisation results, and there is a marginal difference among the four regionalisation approaches in the wet and densely located catchments. (copernicus.org)
Figures related to C.C. Brauer, A.J. Teuling, P.J.J.F. Torfs, R. Uijlenhoet (2014): The Wageningen Lowland Runoff Simulator (WALRUS): a lumped rainfall-runoff model for catchments with shallow groundwater, Geosci. (wur.nl)
This study explores the application of long short-term memory (LSTM) networks to simulate runoff at the national scale of Denmark using data from 301 catchments. (geusbulletin.org)
The median Kling-Gupta Efficiency (KGE), a common metric to assess performance of runoff predictions (optimum of 1), increased from 0.7 (DK-model) to 0.8 (LSTM) when trained against all catchments. (geusbulletin.org)
Delineation of hydrological catchments, map overlay and analysis, which are basics of GIS software, help for derivation and aggregation of hydrologic parameters from the input data like DEM, soil map, land use map, and rainfall data. (scirp.org)

For planning and management, the climate and the hydrological modelers have begun working out runoff projections. (envirobiotechjournals.com)

The HBV-2 Model is based on lumped-parameter approximations to the physical laws governing infiltration, percolation and runoff formation. (iwaponline.com)
If set to 'DESIGN' then the DDF model, SCF and ARF are combined to give a rainfall depth. (floodmodeller.com)
Load the plugin and use like a standard Rainfall runoff model. (ewater.org.au)
The rainfall- runoff model of IHACRESS is calibrated and validated to the base period 1988-2010 and run for future periods of 2016 2038 and 2039 2061. (envirobiotechjournals.com)
The main objective of this research article is determining the potential runoff coefficient for Jeddah, Saudi Arabia by applying CN model and using remote sensing and GIS techniques. (scirp.org)

These findings suggest that the best management practices for atrazine can be used to manage S -metolachlor and isoxaflutole/DKN loss in surface water runoff. (bioone.org)
The output from the top tank is considered as surface runoff, output from the second tank as intermediate runoff, from the third tank as sub-base runoff and output from the fourth tank as baseflow. (ewater.org.au)
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or stream flow). (wikipedia.org)
Surface runoff often occurs because impervious areas (such as roofs and pavement) do not allow water to soak into the ground. (wikipedia.org)
Surface runoff is a major component of the water cycle. (wikipedia.org)
Runoff that occurs on the ground surface before reaching a channel can be a nonpoint source of pollution, as it can carry human-made contaminants or natural forms of pollution (such as rotting leaves). (wikipedia.org)
Much agricultural pollution is exacerbated by surface runoff, leading to a number of down stream impacts, including nutrient pollution that causes eutrophication. (wikipedia.org)
In addition to causing water erosion and pollution, surface runoff in urban areas is a primary cause of urban flooding, which can result in property damage, damp and mold in basements, and street flooding. (wikipedia.org)
In these regions, even on less infertile cracking clay soils, high amounts of rainfall and potential evaporation are needed to generate any surface runoff, leading to specialised adaptations to extremely variable (usually ephemeral) streams. (wikipedia.org)
This occurs when the rate of rainfall on a surface exceeds the rate at which water can infiltrate the ground, and any depression storage has already been filled. (wikipedia.org)
This more commonly occurs in arid and semi-arid regions, where rainfall intensities are high and the soil infiltration capacity is reduced because of surface sealing, or in urban areas where pavements prevent water from infiltrating. (wikipedia.org)
When the soil is saturated and the depression storage filled, and rain continues to fall, the rainfall will immediately produce surface runoff. (wikipedia.org)
Therefore, surface runoff is a significantly factor in the controlling of soil moisture after medium and low intensity storms. (wikipedia.org)
Urbanization increases surface runoff by creating more impervious surfaces such as pavement and buildings that do not allow percolation of the water down through the soil to the aquifer. (wikipedia.org)
Based on the analysis of particular comparable rainfall-runoff episodes, it can be stated that the protection (e.g. grassing, growing of narrow-row crops) of slopes adjacent to watercourses has a crucial influence on the reduction in surface water pollution with insoluble substances. (pjoes.com)
Gaojiaping subwatershed has a dramatically higher-level surface runoff proportion and a remarkably lower-level groundwater runoff proportion than the other three subwatersheds-Sanchakou, Cangpinghe, and Xiangguxi subwatersheds. (sustech.edu.cn)
The surface runoff proportion and groundwater runoff proportion are negatively and positively correlated with the geological characteristic value, respectively. (sustech.edu.cn)
A rainfall simulator was used to measure runoff and erosion rates from plots at three Indiana surface mines. (cdc.gov)
Areas where surface runoff is directed. (cdc.gov)

Initially 27 different sensitive parameters effecting the runoff are tasted and 20 most sensitive ones are found. (iyte.edu.tr)

This suggests a high spatial patchiness of rainfall events in terms of depth and intensity, and implies that small playa records are not necessarily always helpful in reconstructing the regional climatic history of the recent past. (lincoln.ac.uk)

Curve numbers obtained from the standard USDA Natural Resources Conservation Service (NRCS) table were suitable to estimate runoff for bare soil, soybeans ( Glycine max [L.] Merr. (jswconline.org)
The CN method was not adequate to estimate runoff for the undisturbed Cerrado, bare soil (hydrologic soil group A), pasture, and millet ( Pennisetum glaucum ). (jswconline.org)

In this research using Artificial Neural Network Multi-layer Perceptron (MLP (and Adaptive Neuro-fuzzy interface system (ANFIS) and multiple regression method simulated rainfall- runoff process on daily basis in the Khorramabad watershed. (ac.ir)

From R.O. Imhoff, C.C. Brauer, K.J. van Heeringen, R. Uijlenhoet, A.H. Weerts (2022): Large-sample evaluation of radar rainfall nowcasting for flood early warning, Water Resour. (wur.nl)

During the next rainfall event, the infiltration capacity will cause the soil to be saturated at a different rate. (wikipedia.org)

However, not all rainfall will produce runoff because storage from soils can absorb light showers. (wikipedia.org)
On the extremely ancient soils of Australia and Southern Africa, proteoid roots with their extremely dense networks of root hairs can absorb so much rainwater as to prevent runoff even with substantial amounts of rainfall. (wikipedia.org)

Time interval used in unit hydrograph and rainfall profile (hrs). (floodmodeller.com)

The timing of the older identified events did not match local rainfall records, and proved to be uncorrelated with occurrences of El Niño-Southern Oscillation (ENSO). (lincoln.ac.uk)
And even if opinions are divided as to whether these events are connected to climate change, Johanna Sörensen believes we can assert that something has indeed happened to the climate, when Copenhagen has been hit in the past seven years by three rainfalls so heavy that they should each have happened in a separate century, according to theory. (lu.se)

Soil retains a degree of moisture after a rainfall. (wikipedia.org)

The curve number (CN) is a hydrologic number used to describe the storm water runoff potential for drainage area. (scirp.org)

The IS and gridded IS approaches use five properties to build similarity indices, including three physical properties (an aridity index, a fraction of forest ratio and the mean annual air temperature) and two rainfall indices (rainfall seasonality and the standard deviation of daily rainfall). (copernicus.org)

In this study we used experimental plots to measure natural rain-fall-driven rates of runoff under undisturbed Cerrado and under the main crops found in this region, and derive associated CN values from the measured data using five different statistical methods. (jswconline.org)
and sugarcane ( Saccharum L.). However, CN values obtained from measured rainfall-runoff data (CN calibrated) provided better runoff estimates than the CN values from the standard table. (jswconline.org)
We study the techniques to improve these factors, such as rainfall nowcasting to improve the input or data assimilation to improve the initial conditions, and their effectiveness in increasing the forecast skill. (wur.nl)
Geospatial analysis of satellite rainfall products, evaluation of weather radar data and applications, and satellite image processing are among the current research studies by Hasan. (lu.se)

However, given the high measurement uncertainties and the potentially large runoff-variability between years this is not possible! (copernicus.org)

Also by increasing in the number of inputs, involvement pervious day rainfall and two previous days, all three models performance will be better. (ac.ir)

Runoff volumes and herbicide concentrations were determined for each runoff event. (bioone.org)
Under the same rainfall and different storage volumes the runoff generated is significantly different. (ewater.org.au)

In the present study, we suggested the method of dam operation based on rainfall forecast including prior releasing considering the risk in terms of water supply purpose. (easychair.org)
Climate change would significantly affect many hydrologic systems, which in turn would affect the water availability, runoff and the flow in rivers. (envirobiotechjournals.com)
The importance of this finding emerges from the direct link between the index of hydrogeological survey in hydrogeology and proportions of different runoff components, providing a simple and effective way for water resources assessment in ungauged watersheds. (sustech.edu.cn)
2 On-screen plot entitled "H2O flux" shows ecosystem water fluxes transpiration, soil evaporation, evaporation of intercepted rainfall, runoff and the sum (total) of these fluxes. (lu.se)

Third, the method of dam operation based on rainfall forecast including prior releasing was applied to past examples and the effect was verified. (easychair.org)

2nd Part: Rainfall-runoff cross-wavelet analysis. (ac.ir)

However, there are few studies investigating their benefits for predicting runoff time series on a continental scale. (copernicus.org)

Areal reduction factor to relate point rainfall to areal rainfall. (floodmodeller.com)

Results showed that the average of runoff volume in future years decrease 3.7% during the 2016-2038 while this amount is 5.16% during the 2039-2061 under the both scenarios relative to the base. (envirobiotechjournals.com)
The results show that the runoff depth is directly proportional to runoff coefficient and the total volume of runoff is more than 136 million cubic meters for a rainfall of 103.6 mm. (scirp.org)

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Phenomena and Processes63

Disciplines and Occupations8

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Distributed Rainfall-Runoff Model1

Catchment5

Prediction4

Precipitation7

Conceptual5

Calibration2

Modelling7

Basin6

Stormwater2

Processes3

Direct runoff1

Heavy rainfall1

Monthly runoff1

Modeling2

20002

Discharge5

Catchments7

Hydrological1

Model5

Surface19

Parameters1

Intensity1

Estimate2

Artificial neural1

20221

Infiltration1

Soils2

Hydrograph1

Events2

Moisture1

Curve1

Temperature1

Data4

Measurement1

Models1

Volumes2

Water4

Method1

Analysis1

Time1

Reduction1

Results2