tailwater

Water below dam

Tailwater is water downstream from a dam, spillway, or hydroelectric plant—the flow that emerges after passing through or around a water control structure.

In fishing, tailwaters are prized trout habitat because dam releases maintain consistent temperatures and flows: The tailwater below the reservoir offers year-round fishing.

The term also applies to irrigation water that runs off the end of a field.

dam

reservoir

Large water storage basin

spillway · hydropower · hydroelectric · release · powerhouse · penstock · sluice · generation · regulated

irrigation

canal

Dug water passage

  • ditchShallow excavated channel
  • furrowNarrow trench in earth
  • runoffExcess water drainage

reuse · drainage · field · pump · efficiency · recapture · recovery · agricultural · downstream · diversion

fishing

trout

Freshwater game fish

drift · nymph · streamer · hatch · waders · tippet · reel · rod · lure · barbless

current

flow

Unbroken forward movement

vortex · drift · surge · swirl · churn · cascade · riffle · pool · hydraulic · seam

hydrology

streamflow

River water's measured movement

aquatic · confluence · riparian · eutrophication

Opposites
water position relative to hydraulic structure

tailwaterheadwater

River's origin point

headwaters · forebay · headrace · reservoir · inflow

reservoir function

tailwaterreservoir

Large water storage basin

impoundment · lake · millpond · backwater

Family

tailwaters

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G