River
Eg River
475 km from source to mouth · Mongolia.
MongoliaFlows into Selenga6th longest in Mongolia
In numbers
Length
475km
Average flow
100m³/s
Basin
49,100km²
Drop
816m
from 1,643 m to 827 m
Country
1
The journey
From source to mouth
475 km of river and 2 stops on the way: 0 towns and cities on its banks, dams, bridges and the tributaries that feed it.
- 0 kmKhövsgöl Lakeat 1,643 m
- 2 kmKhövsgöl Lake2,768 km²
- 385 kmTarvagatai Rivertributary
- 475 kmSelengaat 827 m
Water level along the river (RiverATLAS; the height is exaggerated). Towns: GeoNames and Wikidata; bridges, dams and tributaries: Wikidata.
River in Mongolia
At the mouth it carries 100 m³/s on average: an Olympic pool every 25 seconds. It drops from 1,643 m to 827 m, 1.7 m per kilometre on average. Its basin covers 49,100 km², about the size of SK. 25,000 people live in it. Highest water: August; lowest: from December to March. No large dam holds it back: it is one of the world's free-flowing rivers.
Where to start
- IngettolgoyA town on its banks
- Bulgan Airport (UGA)Nearest airport with scheduled flights, 77 km from the city
- On the water3 ferry piers, marinas, boat rentals and boat ramps along the river (OpenStreetMap)
- From June to AugustThe best months to visit
Eg River, month by month
Highest water: August
Lowest water: from December to March. Freezing months (average below −4 °C): from November to March. Best months to visit: from June to August.
From about 21 m³/s in the lowest month to 300 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
Eg River: the basin in numbers
42,002 km² of land send their water to this river. This is what lives on it.
- 25,000people live in the basin
- 1/km²people per km²
- 1,660maverage altitude of the basin
- 364mmof rain a year (basin average)
- -4.2°Caverage air temperature
- 34%protected areas
- 6.7%covered by lakes
- 48%permafrost
What covers the basin
- 39% Forest
- 1% Cropland
- 14% Pasture
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
Eg River: what you find on the way
- 2Weirs
- 2Ferry piers
- 1Marinas
From OpenStreetMap, within 2.2 km of the river. Not mapped is not the same as not there.
Cross-checked with our atlases
Eg 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.
1lake on its wayLakeyas
1mountain at the sourcePeakyas
Lakes and reservoirs (1)
Lakes it flows through, by Lakeyas
- Khövsgöl Lakekm 2 · 262 m deep2,768km²
Lakeyas is coming soonOpen Lakeyas ↗
Mountains at the source (1)
Within 15 km of the source, by Peakyas
- Hüren Nuruu7.0 km away
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.
Photos
Eg River in pictures

Tributaries
Where it flows, and what flows into it
It flows into
SelengaTributaries (2)
Also: Üür River, Tarvagatai River
In the same basin
Where these numbers come from
| Name, length, places | Wikidata (Q236910) · 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 |
| Our other atlases | Lakeyas, 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.