Mathematical models have been widely used to quantify hydrological processes for various practical purposes. These depend on geomorphological attributes which are derived from relief information represented by Digital Elevation Models (DEM). The objective of this study was evaluate the influence sources (ASTER, SRTM-30, SRTM-90, and TOPO) over characterization five Brazilian watersheds. Geoproc...

With the increasing availability of low head dam inventories for United States, next challenge is discovering how to determine what dams pose greatest risk public safety, preferably before a death occurs. Submerged hydraulic jumps create dangerous current that drowns roughly 50 recreationists each year, and high tailwater key element in its formation. Using simplified approach based on Manning ...

Abstract. Excess export of nitrate to streams affects ecosystem structure and functions has been an environmental issue attracting worldwide attention. The dynamics catchment-scale solute from diffuse nitrogen sources can be explained by the changes dominant flow paths, as attenuation (including degradation nitrate) is linked age composition outflow. Previous data-driven studies suggested that ...

[1] The present study examines variations in the reference shear stress for bed load transport (tr) using coupled measurements of flow and bed load transport in 45 gravel-bed streams and rivers. The study streams encompass a wide range in bank-full discharge (1–2600 m/s), average channel gradient (0.0003–0.05), and median surface grain size (0.027–0.21 m). A bed load transport relation was form...

A flight of marine terraces along the central California coastline provides a unique setting for the study of topographic evolution. Wavecut platforms manfled by 2-6 m of marine terrace cover deposits are separated by10-50 m tall decaying sea cliffs. Palcocliff edges become more rounded with age, yet the details of the profries and frequent bedrock exposure on the upper slopes imply weatheringl...