This primer accompanies the release of BAGS, software developed to calculate sediment transport rate in gravel-bed rivers. BAGS and other programs facilitate calculation and can reduce some errors, but cannot ensure that calculations are accurate or relevant. This primer was written to help the software user define relevant and tractable problems, select appropriate input, and interpret and app...

Geomorphic and hydraulic processes, which form gravel bars in large lowland rivers, have distinctive characteristics that control the magnitude and spatial patterns of infiltration and exfiltration between rivers and their immediate subsurface environments. We present a bedform-infiltration relation together with a set of field measurements along two reaches of the San Joaquin River, CA to illu...

Sand (i.e., < 2 mm) infiltration into a gravel bed is recognized to affect sediment dynamics of coarser fractions entrainment and transport rate), near-bed velocities, morphology, pose significant engineering ecological issues. Local hydraulics, dynamics, sand the matrix are related mutually each other in gravel-bed rivers. However, relatively little research has been done explore mobile under ...

The origin of the well-known ‘grain size gap’ within range 1–10 mm in fluvial gravels is explored a laboratory experiment to ascertain effect hydraulic sorting. A widely graded sand/gravel mixture was fed into flume containing bed composed same sediment mixture. rate feed varied but water flow remained constant throughout at that sustained size-selective bedload transport with negligible suspen...

[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...