<p>Regional analysis is often used for flood quantile estimation in ungauged catchments. The regionalization procedure has two phases: the formation of homogeneous regions and estimation. presented research results consider first phase regional 41 catchments Serbia. catchment similarity attributes are area mean elevation. number formed stations within determined by maximising silhouette width region. Regions were obtained cluster then adjusted to comprise with a positive width....

During the drought flow in streams is reduced and dominated by base flow. Baseflows are characteristic of low periods provide information on available water resources basin during drought, particularly aquifer retention characteristics. This paper deals with possibility analysis simulation baseflow, determination pattern its changes based total registered streamflow hydrograph at catchment outlet. The basis for modeling time were values obtained from application graphical local minimum...

Flood quantile estimation in ungauged basins is often performed using regional analysis. A regionalization procedure consists of two phases: the definition homogeneous regions among gauged basins, i.e., clusters stations, and information transfer to sites. Due its simplicity widespread use, a combination hierarchical clustering by Ward’s algorithm index-flood method applied this research. While very efficient, shortcomings are lack flexibility clusters/regions inability objects/stations from...

Changes in the hydrological regime are widely investigated using a variety of approaches. In this study, we assess changes annual and seasonal flow characteristics based on probabilistic representation runoff at daily time scale. The pattern is constructed by determining quantiles from marginal distributions flows for each day within year. By applying Fourier transformation statistics partial series, obtain smooth periodical functions distribution parameters over year consequently quantiles....

In addition to climate change, factors affecting the future water regime at basin level also include changes in land use and cover. This study aims evaluate performance of three methods for predicting cover within Toplica River basin, up Doljevac hydrological station, until year 2100. Predictions were made using MOLUSCE plugin QGIS v2.18 software package. Four variants input data analyzed, combining digital elevation model indicators such as road distance, exposure, terrain slope. The kappa...

Distributions of the modulus elasticity (MOE) and rupture (MOR) were characterized at three loading rates for small clear beech specimens in static bending. The correlation between MOE MOR all was significant, but it weakened with increasing load rates. analysis characteristics empirical distributions, as well preliminary selection theoretical distributions MOR, performed on basis L-moments L-moment diagrams. According to standard testing specimens, are determined arithmetic mean sample....

An analysis of mean annual runoff was conducted for a small ungauged catchment the Tulovska River in South Morava Basin. Langbein?s method, Turk?s method and regional regression models were applied obtaining runoff. Long-term temperature, precipitation elevation are used as input data. The estimations using various sources climatological data results then compared. Precipitation temperature derived, 10 km x resolution raster format, from digital repository CarpatClim project. Point...

Eighteen low flow indicators are considered in the research of sixteen hydrological stations Juzna Morava river basin. The estimated by statistical analysis and grouped as environmental indicators. A crosscorrelation between all is assessed. Environmental flows at hydrologic obtained GEP method. transferred to two small ungauged basins regression with physiographic characteristics. adjustment performed according locations donor hydrogeological regions studied area.

Evapotranspiration is one of the most important processes within hydrological cycle whose reliable assessment essential in planning and managing land water resources. Besides that, needs plants depend directly on size evapotranspiration. This paper presents a comparison reference evapotranspiration values calculated using FAO Blaney-Criddle method, Radiation methods, Penman 56 Penman-Monteith method with results measurements at meteorological station Kosutnjak during growing seasons 2004,...

During dry periods, the flow of medium and small streams is significantly reduced equal to groundwater flow. Since base flows provide information about aquifer characteristics retention a basin, possibilities analysis simulation gain importance under conditions intensive water use increasing demand for adequate quality protection. In this paper, model was established used description principles governing changes runoff on basis streamflow hydrograph registered at outlet basin example...

Flood flow frequency analysis (FFA) plays one of the key roles in many fields hydraulic engineering and water resources management. The reliability FFA results depends on factors, an obvious being input data - datasets annual peak flow. In practice, however, engineers often encounter problem incomplete (missing data, gaps and/or broken records) which increases uncertainty results. this paper, we perform at-site focused analysis, use a complete dataset flows from 1931 to 2016 at hydrologic...