routing at junctionrouting periodrow croprrstriction operatorrubblerubble landrunrun offrun onrun overrun time errorrun upruningrunnelrunning sandrunoff coefficientrunoff detentionrunoff distribution curverunoff percentagerunoff raterunoff volumerynolds numbers curvesaddle profilesaddle siphonsaddle spillwaysafe velocitysafety gatesafteysafty factorsalinasalina contaminationsalina soilsalinitysalt hazesalt marshsalt methodsalt velocity methodsaltationsaltation loadsample data systemsamplingsamum windsan dimas flumesandsand boilsand dunesand dune stabilizationsand filtersand gate