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River

Porcupine River

916 km from source to mouth · Canada and United States.

CanadaUnited StatesCanada and United StatesFlows into Yukon River

Follow the riverMonth by month

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

In numbers

Length

916km

Average flow

650m³/s

Basin

61,400km²

Drop

706m

from 789 m to 83 m

Countries

2

The journey

From source to mouth

916 km of river and 7 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.

789 m83 m
Miner Riverat 789 m0 km
Troochoonjiktributary394 km
Cadzow Lake2.7 km²424 km
Coleen Rivertributary663 km
Gailey Lake0.6 km²794 km
Yukon Riverat 83 m916 km
0200400600800916 km
  1. 0 kmMiner Riverat 789 m
  2. 394 kmTroochoonjiktributary
  3. 424 kmCadzow Lake2.7 km²
  4. 486 kmOld Crow Rivertributary
  5. 663 kmColeen Rivertributary
  6. 794 kmGailey Lake0.6 km²
  7. 811 kmSheenjek Rivertributary
  8. 828 kmDraanjik Rivertributary
  9. 916 kmYukon Riverat 83 m

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

River in Canada and in Alaska

At the mouth it carries 650 m³/s on average: an Olympic pool every 3.8 seconds. It drops from 789 m to 83 m, 0.8 m per kilometre on average. Its basin covers 61,400 km², about the size of LV. Highest water, with the snowmelt: from May to July; 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

Porcupine River, month by month

Highest water: from May to July

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.

160
-29°11 mmJan
160
-27°10 mmFeb
160
-21°9 mmMar
160
-10°9 mmApr
1,500
2°13 mmMay
1,400
11°30 mmJun
1,400
13°36 mmJul
700
10°42 mmAug
770
3°27 mmSep
560
-9°23 mmOct
320
-22°16 mmNov
160
-26°14 mmDec
Water (estimated flow)Air (average) Rain (mm)Best months

From about 160 m³/s in the lowest month to 1,500 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

Porcupine River: the basin in numbers

91,659 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.
  • 294people live in the basin
  • 569maverage altitude of the basin
  • 228mmof rain a year (basin average)
  • -10.0°Caverage air temperature
  • 52%protected areas
  • 1.7%covered by lakes
  • 94%permafrost

What covers the basin

  • 9% 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.

Cross-checked with our atlases

Porcupine 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.

  • 2lakes on its wayLakeyas
  • 2mountains at the sourcePeakyas

Lakes and reservoirs (2)

Lakes it flows through, by Lakeyas

  1. Cadzow Lakekm 3582.7km²
  2. Gailey Lakekm 6710.6km²

Lakeyas is coming soonOpen Lakeyas ↗

Mountains at the source (2)

Within 15 km of the source, by Peakyas

  1. Mount Chief Isaac6.3 km away
  2. Mount Gale1.5 km away

Open Peakyas ↗

From space

The source and the mouth, seen from orbit

Porcupine River: satellite view of the source
The source14 km across
Porcupine River: satellite view of the mouth
The mouth41 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.

Tributaries

Where it flows, and what flows into it

Tributaries (13)

Also: Old Crow River, Draanjik River, Sheenjek River, Coleen River, Rapid River, Troochoonjik, Grass River, Bell River, Pine Creek, Miner River, Whitestone River, Sucker River, Eagle River

Where these numbers come from

Name, length, placesWikidata (Q284603) · 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, 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