Abstract. The distributed unit hydrograph (DUH) method has been widely used for flow routing in a watershed because it adequately characterizes the underlying surface characteristics and varying rainfall intensity. Fundamental to calculation of DUH is velocity. However, currently velocity formula assumes global equilibrium ignores impact time-varying soil moisture content on velocity, which thu...

Abstract Floods occur due to several factors including topographic conditions, high rainfall intensity, blockage of water flow, lack infiltration areas, deforestation, and so on. The Tojo watershed is included in the Parigi-Poso river area, with an area 211,830 km2 a length 25.52 km. In watershed, it necessary study flooding, because always flows every year. This research aims find out how much...

<p>Changes in land use are closely related to the increasing number of people who from time time. This change has an impact on runoff coefficient because rain that falls will not be retained or seep and flows directly into river. is what causes increase peak discharge a watershed. The purpose this study was determine magnitude changes occurred Serenan watershed 2015 2021 due use. method u...

Abstract. With the increasing attention on environmental flow management for maintenance of habitat diversity and ecosystem health mountain gravel-bed rivers, much interest has been paid to how inter-flood low can affect river morphodynamics during subsequent flood events. Previous research found that antecedent conditioning lead an increase in critical shear stress a reduction sediment transpo...

[1] The unit hydrograph (UH) concept and model have been widely used in the hydrological field over the past decades. However, the estimation of such a model in practice has always been a challenge for researchers and practitioners because such a model is usually ill formed in mathematical terms. The large number of parameters (or the number of ordinates) in a unit hydrograph model are correlat...

Here we report on 3 years (1996-1998) of measurements of organic and inorganic nitrogen (N) fluxes to and from Green Lakes Valley, a high-elevation ecosystem in the Colorado Front Range of the Rocky Mountains. Nitrate-N (NO3-N) was the dominant form of N in both precipitation and stream water. Annual precipitation contained 52% NO3-N, 32% ammonium-N (NH4-N), 9% dissolved organic N (DON), and 7%...