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River

Geum River

395 km from source to mouth · South Korea.

South KoreaSouth KoreaFlows into Yellow Sea3rd longest in South Korea

Follow the riverMonth by month

SourceMouth
The river and every tributary in its basin, drawn from RiverATLAS (CC BY 4.0).

In numbers

Length

395km

Average flow

210m³/s

Basin

10,000km²

Drop

337m

from 337 m to 0 m

Country

1

The journey

From source to mouth

395 km of river and 7 stops on the way: 3 towns and cities on its banks, dams, bridges and the tributaries that feed it.

337 m0 m
Sourceat 337 m0 km
Daecheong Dam237 km
Sintansin15,000 people245 km
Gongju72,435 people294 km
Geumgang Bridge309 km
Yellow Seaat 0 m395 km
0100200300395 km
  1. 0 kmSourceat 337 m
  2. 237 kmDaecheong Dam
  3. 245 kmSintansin15,000 people
  4. 273 kmGeumgang Pedestrian Bridge
  5. 274 kmGeumnam Bridge
  6. 294 kmGongju72,435 people
  7. 309 kmGeumgang Bridge
  8. 334 kmBuyeo59,823 people
  9. 395 kmYellow Seaat 0 m

Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.

River in South Korea

At the mouth it carries 214 m³/s on average: an Olympic pool every 12 seconds. It drops from 337 m to 0 m, 0.9 m per kilometre on average. Its basin covers 10,000 km², about the size of LB. 3.5 million people live in it. Highest water: from August to September; lowest: from December to March. Dams and reservoirs hold back a large share of its water (22% of a year's flow).

Read more on Wikipedia

Where to start

  • GongjuLargest city on its banks · 72,435 people
  • Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ)Nearest airport with scheduled flights, 44 km from the cityCar hire in SeoulDiscover Cars · Affiliate link
  • On the water12 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
  • May and OctoberThe best months to visit

Geum River, month by month

Highest water: from August to September

Lowest water: from December to March. Best months to visit: May and October.

71
-2°29 mmJan
39
0°37 mmFeb
150
5°53 mmMar
200
12°91 mmApr
230
17°91 mmMay
250
22°152 mmJun
440
25°294 mmJul
550
25°249 mmAug
500
20°136 mmSep
300
14°50 mmOct
170
6°50 mmNov
100
0°31 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 39 m³/s in the lowest month to 550 m³/s in the highest. An estimate: the monthly flow is modelled from the lowest and highest months of WaterGAP (RiverATLAS, 1971–2000) and the rain and snow along the river (WorldClim). Dams change the real rhythm. The chip is the average air temperature; below it, the month's rain.

Plan the trip

Plan the trip: boat trips, a bed by the river, a car

Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.

The basin

Geum River: the basin in numbers

9,776 km² of land send their water to this river. This is what lives on it.

Heavily regulatedReservoirs can hold 22% of a year's flow: dams shape its seasons.
  • 3.5millionpeople live in the basin
  • 363/km²people per km²
  • 229maverage altitude of the basin
  • 1,285mmof rain a year (basin average)
  • 11.2°Caverage air temperature
  • 5%protected areas
  • 0.7%covered by lakes
  • 1.5km³held in reservoirs

What covers the basin

  • 51% Forest
  • 22% Cropland
  • 1% Pasture
  • 10% Towns and cities

RiverATLAS (HydroATLAS v1.0, CC BY 4.0): land cover, people, protected areas, glaciers and dams over the whole basin upstream of the mouth.

Along the river

Geum River: what you find on the way

  • 9DamsDaecheon Dam and 8 more
  • 2Weirs
  • 1Waterfalls
  • 12Boat ramps

From OpenStreetMap, within 1.8 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Geum River in our other atlases

What our sister atlases know about the waterfalls on this river, the lakes it flows through, the beaches at its mouth, the mountains where it rises and the islands off its mouth.

  • 1beach at the mouth or on the banksCoastya
  • 23mountains at the sourcePeakyas

Beaches (1)

At the mouth (25 km) and on the banks, by Coastya

  1. Biin-haesuyokjang21 km away25.5°C

Open Coastya ↗

Mountains at the source (23)

Within 15 km of the source, by Peakyas

  1. Muryongsan15 km away1,492m
  2. Jangansan11 km away1,237m
  3. Seongaksan14 km away1,141m
  4. Deoktaesan13 km away1,113m
  5. Tokuyuzan9.9 km away
  6. Gosan14 km away
  7. Muyong-san15 km away
  8. Wolbong-san13 km away

15 more on PeakyasOpen Peakyas ↗

From space

The source and the mouth, seen from orbit

Geum River: satellite view of the source
The source14 km across
Geum River: satellite view of the mouth
The mouth13 km across

Sentinel-2 cloudless 2016 by EOX IT Services GmbH (contains modified Copernicus Sentinel data 2016), CC BY 4.0. The glowing line is the river as drawn by RiverATLAS.

Photos

Geum River in pictures

Daecheong Dam
Yoo Chung · CC BY-SA 2.5
Boat on Geum River in Gongju 01
Bernard Gagnon · CC0
Boat on Geum River in Gongju 02
Bernard Gagnon · CC0
Buyeo Bridge on Geum River
Ox1997cow · Public domain

Where these numbers come from

Name, length, placesWikidata (Q489139) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed along the river network from the point given by Wikidata
FlowWaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0
Climate along the riverWorldClim (RiverATLAS), 1970–2000 · CC BY 4.0
Towns, bridges, damsWikidata · CC0; GeoNames · CC BY 4.0
Along the river© OpenStreetMap contributors · ODbL
ImagesEOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons
Our other atlasesCoastya, Peakyas — Wikidata · CC0; © OpenStreetMap contributors · ODbL; GeoNames · CC BY 4.0; HydroLAKES · CC BY 4.0; NOAA OISST

Every source and licence is on the data sources page.

The family

Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?

Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.

beachesCoastyaFind your beach: sea temperature, sun and swimming month by month.Visit
lakesLakeyasEvery lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit
mountainsPeakyasEvery summit in 3D: summit weather, the 0 °C line, huts and trails.Visit
waterfallsCascadyasEvery waterfall: height, flow month by month and when it roars.Coming soonVisit
islandsIslandyasEvery island from the sea up: size, sea temperature, ferries and 3D.Coming soonVisit
riversRiveryasEvery river from source to sea: the journey, the flow and the basin in numbers.You are here
canyonsCanyonyasEvery canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.Coming soonVisit