Streamflow Survey

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We conduct hydrological survey which consists of various measurements; streamflow involving the IRDIMS (Integrated Real-time DIscharge Measurement System), sediment load, soil moisture, and evapotranspiration throughout the all country.

※ Precipitation and water level are measured by MOLIT and groundwater is measured by K-water.

Streamflow

Streamflow is measured by the various methods and instruments.
Procedure
  • methodsCup-type current meter (Price) measurements by wading
  • methodsAcoustic doppler current meter measurements by wading
  • methodsADCP measurements from moving boat
  • methodsCurrent meter measurements from bridges
  • methodsCurrent meter measurements from bridges
  • methodsADCP measurements by stationary method
  • methodsADCP measurements from tethered boats
  • methodsADCP measurements from tethered boats
  • methodsFloat measurements from bridges
  • methodsFloat measurements from bridges
  • methodsDrilling holes for current meter measurements from ice cover
  • methodsADCP measurements from ice cover
equipments
results
Measurements
Year Han River Nakdong River Geum River Yeongsan River Total
2007 28 28 23 28 107
2008 30 31 23 25 109
2009 33 30 25 26 114
2010 36 37 26 27 126
2011 38 35 25 23 121
2012 38 37 24 24 123
2013 42 40 33 33 148
2014 47 40 33 35 155
2015 44 40 34 35 153
2016 44 41 34 35 154
results
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