Orog Lake Explained

Orog Lake
Pushpin Map:Mongolia
Location:Bayankhongor Province
Basin Countries:Mongolia
Length:31.8km (19.8miles)
Width:7.7km (04.8miles)
Area:140km2
Depth:3m (10feet)
Max-Depth:5m (16feet)
Volume:0.42km3
Elevation:1217m (3,993feet)

Orog Lake, or Orog Nuur is a lake located in the district of Bogd, in Bayankhongor Province, Mongolia.

It is situated at an altitude of 1216 m above sea level. Fed by the waters of the river Tüyn Gol. The shores are low and sandy, with salt marshes in some places. Fresh or salt water predominates depending on the amount of rainfall. Frozen from November to April. It is rich in fish and waterfowl.[1]

Uranium and arsenic accumulate in this lake during evaporation, although, under very dry conditions, some As(V) reacts with ferrihydrite and is removed.[2]

Notes and References

  1. Web site: Орог-Нур. Большая Советская Энциклопедия. 2011-08-27. ru.
  2. B . Gankhurel . K . Fukushi . D . Davaasuren . E . Imai . Arsenic and uranium contamination of Orog Lake in the Valley of Gobi Lakes, Mongolia: Field evidence of conservative accumulation of U in an alkaline, closed-basin lake during evaporation . Journal of Hazardous Materials . 436 . August 15, 2022 . 10.1016/j.jhazmat.2022.129017. free .