The paper introduces a semi-distributed hydrological model, suitable for continuous simulations, based upon the use of daily and hourly time steps. The model is called Distributed model for Runoff, Evapotranspiration, and Antecedent soil Moisture simulation (DREAM). It includes a daily water budget and an “event scale” hourly rainfall-runoff module. The two modules may be used separately or in ...

This study measured runoff and sediment concentration from the tire track and from the non-tire track to determine infiltration, interrill erodibility, and vegetative cover impacts of reopening an abandoned forest road. Runoff was lowest on the non-track portion of the abandoned road and highest on the reopened road. Sediment concentrations were significantly higher on the reopened road. Increa...

avicenna has divided the conditionals to the real cogent (i.e. with possible antecedent) and the verbal cogent (i.e. with the impossible antecedent). denying the truth of the latter, he caused controversies among moslem logicians. at the paper, we report the controversies, analyze the real and verbal cogent conditionals, formalize them in modern modal and relevant logics, and finally, defend id...

Understanding the characteristics of non-point sources (NPS) pollutions can provide theoretical support for improving water quality. Siheshui watershed located in south China was selected to explore the characteristics of NPS pollutions in rainfall-runoff process. In this small agricultural watershed, five flood events and one non-flood event were monitored, and the water quantity and quality c...

Hydrological models are used to represent the rainfallrunoff and pollutant transport mechanisms within watersheds. Accurate representation of these dynamic and complex natural processes within a watershed is an important step in managing and protecting a watershed Artificial neural network (ANN) models are often used in hydrologic modeling. Typical ANN models are trained to use lumped data. How...

In this work, the largest tributary of South Branch in upper reaches Xiong’an New Area is selected as study area. The impact-based critical areal rainfall indices for early flood warnings are proposed from perspective impacts floods on socio-economic factors. Specifically, four steps, including determination damage-causing discharges, establishment rainfall–discharge relationship, computation a...

As the world is changing, mainly due to climate change, extreme events such as floods and droughts are becoming more frequent severe. Considering this, predictive modeling of flow in small mountain catchments that particularly vulnerable flooding critical. Rainfall data sources rain gauges, meteorological radars, satellites provide hydrological model with a lag. Only numerical weather predictio...

Landslides are one of the most disastrous natural hazards that frequently occur in Indonesia. In 2017, Balai Sabo developed an Indonesia Landslide Early Warning System (ILEWS) by utilizing a single rainfall threshold for entire nation, leading to inaccuracy landslide predictions. The study aimed improve accuracy system updating threshold. We analyzed 420 events Java with 1-day and 3-day effecti...

Abstract Two first-order forested watersheds (WS 80 and WS 77) on poorly drained pine-hardwood stands in the South Carolina Coastal Plain have been monitored since mid-1960s to characterize the hydrology, water quality and vegetation dynamics. This study examines the flow and nutrient dynamics of these two watersheds using 13 years (1 969-76 and 1977-81) of data prior to Hurricane Hugo (1 989) ...