specific gravityspecific heatspecific humidityspecific levelspecific retensionspecific retentionspecific yieldspectral numerical analysisspectral numerical predictionspeedspiked samplespillspillwayspillway channelspillway or weirspiral flowspiral rain bandspitsplashsplash erosionsplit samplesplit spoonsplitterspoilspoil bankspouting velocitysprayspray flowspreaderspreader boardspringspring watersprinklerspuddingspur dikespur terracesquallsquall frontsquall line stabilitystabilitystabilized channelstablestable air massstable slope methodstable streamstaff gagestaff gaugestagestage discharge relationstage hydrograph
