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River

Kobuk River

451 km from source to mouth · United States.

United StatesUnited StatesFlows into Chukchi Sea

Follow the riverMonth by month

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

In numbers

Length

451km

Average flow

280m³/s

Basin

31,850km²

Drop

216m

from 181 m to -35 m

Country

1

The journey

From source to mouth

451 km of river and 11 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.

181 m-35 m
Sourceat 181 m0 km
Reed Rivertributary59 km
Pah Rivertributary107 km
Kogoluktuk Rivertributary143 km
Tekeaksakrak Lake2.5 km²170 km
Ambler Rivertributary219 km
Akillik Rivertributary260 km
Salmon Rivertributary307 km
Squirrel Rivertributary355 km
Selawik Lake1,058 km²423 km
Chukchi Seaat -35 m451 km
0100200300400451 km
  1. 0 kmSourceat 181 m
  2. 9 kmWalker Lake38 km²
  3. 59 kmReed Rivertributary
  4. 107 kmPah Rivertributary
  5. 143 kmKogoluktuk Rivertributary
  6. 170 kmTekeaksakrak Lake2.5 km²
  7. 219 kmAmbler Rivertributary
  8. 260 kmAkillik Rivertributary
  9. 273 kmAhnewetut Creektributary
  10. 307 kmSalmon Rivertributary
  11. 355 kmSquirrel Rivertributary
  12. 423 kmSelawik Lake1,058 km²
  13. 451 kmChukchi Seaat -35 m

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

Watercourse in the United States of America

At the mouth it carries 283 m³/s on average: an Olympic pool every 8.8 seconds. It drops from 181 m to -35 m, 0.5 m per kilometre on average. Its basin covers 31,850 km², about the size of BE. 1,721 people live in it. Highest water, with the snowmelt: May; lowest: from January to April. No large dam holds it back: it is one of the world's free-flowing rivers.

Read more on Wikipedia

Where to start

Kobuk River, month by month

Highest water: May

Lowest water: from January to April. Freezing months (average below −4 °C): from October to April. Melting snow makes up much of its water. Best months to visit: July.

290
-24°13 mmJan
290
-24°14 mmFeb
290
-19°15 mmMar
290
-10°14 mmApr
520
2°11 mmMay
490
9°21 mmJun
490
12°43 mmJul
400
10°62 mmAug
420
4°35 mmSep
380
-7°22 mmOct
320
-16°17 mmNov
290
-24°15 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 290 m³/s in the lowest month to 520 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

Kobuk River: the basin in numbers

30,059 km² of land send their water to this river. This is what lives on it.

Free-flowingDams upstream can hold only 0.0% of a year's flow: the river still keeps its natural rhythm.
  • 1,721people live in the basin
  • 0/km²people per km²
  • 343maverage altitude of the basin
  • 280mmof rain a year (basin average)
  • -8.5°Caverage air temperature
  • 43%protected areas
  • 1.1%covered by lakes
  • 86%permafrost

What covers the basin

  • 5% Forest

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

Kobuk River: what you find on the way

  • 1Boat ramps

From OpenStreetMap, within 2.1 km of the river. Not mapped is not the same as not there.

Cross-checked with our atlases

Kobuk 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.

  • 3lakes on its wayLakeyas

Lakes and reservoirs (3)

Lakes it flows through, by Lakeyas

  1. Walker Lakekm 1038km²
  2. Tekeaksakrak Lakekm 1802.5km²
  3. Selawik Lakekm 4481,058km²

Lakeyas is coming soonOpen Lakeyas ↗

From space

The source and the mouth, seen from orbit

Kobuk River: satellite view of the source
The source14 km across
Kobuk River: satellite view of the mouth
The mouth24 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

Kobuk River in pictures

KobukRiver
LCGS Russ · CC BY-SA 3.0
A Beautiful Day on the Kobuk River (8451816671)
Western Arctic National Parklands · CC BY 2.0
Cruising on the Kobuk (8489057141)
Western Arctic National Parklands · CC BY 2.0
Kobuk Bendlova 235
16Terezka · CC BY-SA 3.0

Tributaries

Where it flows, and what flows into it

Tributaries (13)

Also: Akillik River, Ambler River, Salmon River, Squirrel River, Tutuksuk River, Kogoluktuk River, Pah River, Reed River, Ahnewetut Creek, Mauneluk River, Beaver Creek, Kallarichuk River, Kaliguricheark River

Where these numbers come from

Name, length, placesWikidata (Q1778017) · CC0
Course, profile, basinRiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth 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 atlasesLakeyas — 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