riffles

rapids

Turbulent river section

• eddiesCounter-flowing circular currents
• turbulenceChaotic flow patterns
• streamflowRiver water's measured movement

confluence · watercourse · meander · sediment · alluvium · fluvial · watershed · tributary · pool · run

deck

Ship's flat surface

• cardsStiff paper rectangles
• sleightDexterous trickery
• faroBanking card game

bridge · cut · poker · blackjack · casino · deal · manipulation · overhand · dovetail · wash

chute

Inclined passage for descent

• dropFall or release
• plungeSudden steep descent
• sprayDispersed liquid droplets

vortex · hole · pour-over · ledge · step · cascade

fly-fishing

Catching trout with artificial lures

• troutFreshwater game fish
• salmonPink-fleshed migratory fish
• wadersWaterproof fishing garment

cast · drift · nymph · hatch · tippet · leader · angler · backcast · barbless · caddisfly

navigation

Determining position and course

• hazardSource of potential harm
• portageOverland boat hauling
• strainerPerforated draining vessel

sweeper · read · scout · line · technical · shallow · grounding · scrape · drag · rock garden

• freshwaterponds, river water, freshwater lake, creek, brook
• gold mininggold pan, pan, panning, nuggets, gold nugget
• river ecosystemsfloodplains, tributaries, oxbow lakes, backwaters, riverbanks
• riverbedriver bottom, stream bed, creek bed, substrate, bedrock
• gold prospectinggold pan, gold panning, panning, sluice box, sluice
• stream featurespool, run, eddy, waterfall, cascade