River
Alazeya
1,590 km from source to mouth · Russia.
RussiaFlows into East Siberian Sea
In numbers
Length
1,590km
Average flow
320m³/s
Basin
64,700km²
Drop
478m
from 301 m to -177 m
Country
1
The journey
From source to mouth
1,590 km of river and 0 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmSourceat 301 m
- 771 kmEast Siberian Seaat -177 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Yakutia, Russia
At the mouth it carries 320 m³/s on average: an Olympic pool every 7.8 seconds. It drops from 301 m to -177 m, 0.3 m per kilometre on average. Its basin covers 64,700 km², about the size of LV. 3,708 people live in it. Highest water, with the snowmelt: from June to August; lowest: from January to April. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- JulyThe best months to visit
Alazeya, month by month
Highest water: from June to August
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.
From about 130 m³/s in the lowest month to 150 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
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The basin
Alazeya: the basin in numbers
64,313 km² of land send their water to this river. This is what lives on it.
- 3,708people live in the basin
- 0/km²people per km²
- 48maverage altitude of the basin
- 198mmof rain a year (basin average)
- -13.2°Caverage air temperature
- 11%protected areas
- 18.0%covered by lakes
- 100%permafrost
What covers the basin
- 24% 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.
From space
The source and the mouth, seen from orbit
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 (3)
Also: Rossokha, Buor-Yuryakh, Sloboda
Where these numbers come from
| Name, length, places | Wikidata (Q82228) · CC0 |
|---|---|
| Course, profile, basin | RiverATLAS v1.0 (HydroATLAS, Linke et al. 2019) · CC BY 4.0 — followed from the source to the mouth given by Wikidata |
| Flow | WaterGAP (RiverATLAS), 1971–2000 · CC BY 4.0 |
| Climate along the river | WorldClim (RiverATLAS), 1970–2000 · CC BY 4.0 |
| Towns, bridges, dams | Wikidata · CC0; GeoNames · CC BY 4.0 |
| Along the river | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every source and licence is on the data sources page.
The family
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