hydrograph

River flow graph

A hydrograph is a chart showing how water flow or level changes over time, typically for a river, stream, or drainage basin.

Hydrologists use hydrographs to track flood patterns, study runoff after storms, and manage water resources: The hydrograph showed the river cresting twelve hours after peak rainfall.

streamflow

discharge

Release of substance outward

lag · response · crest · volume · duration · timing · interflow · throughflow · overland · catchment

basin

watershed

Drainage area boundary

confluence · outlet · divide · subbasin · headwaters · area · boundary · contributing · upstream · downstream

chart

plot

Storyline or land parcel

  • axisRotation reference line
  • curveSmooth, angleless line
  • lineContinuous mark or queue

peak · recession · limb · ordinate · abscissa · scale · rising · falling · visualization · diagram

flood

peak

Utmost height attained

warning · forecasting · spillover · overflow · stage · levee · recurrence · exceedance · attenuation · routing

storm

precipitation

Atmospheric water deposit

frequency · event · response · lag · infiltration · excess · effective · design · unit

measurement

gauging

Measuring or estimating

  • stageRaised performance platform
  • ratingAssigned evaluative score
  • sensorInput-detecting device

recorder · telemetry · monitoring · station · datalogger · weir · flume · stilling · transducer · calibration

Opposites
type of measurement representation

hydrographtopographic map

Chart showing terrain elevation

thermograph · barograph · seismograph

Phrases
Family

hydrography, hydrographic, hydrographer, hydrographers, hydrographical, hydrographs, hydrographically

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