Event: Regional Flyway Initiative Site Studies
Mongolia: Ögii Lake

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Ögii Lake is a freshwater lake located in Ögiinuur soum, Arkhangai aimag, covering approximately 12,600 hectares within the Selenge Orkhon forest steppe ecoregion. The site consists of open water, river inflows, marshes, and surrounding steppe grasslands, and is designated as a Ramsar Site, Important Bird and Biodiversity Area, and Flyway Network Site. It supports internationally important populations of migratory waterbirds, with at least nine species exceeding one percent of their flyway populations, including Swan Goose, Bar headed Goose, Whooper Swan, and Northern Lapwing.
 
The site provides important ecosystem services, including freshwater supply, fisheries, grazing, and tourism, supporting local livelihoods. However, increasing pressures from overgrazing, tourism expansion, waste pollution, and climate-driven hydrological changes are degrading habitats and water quality. Priority actions include strengthening site management and zonation, improving grazing management, expanding biodiversity monitoring, and addressing tourism-related waste and pollution.
 

RFI Site Snapshot

City Municipality Province Region
Ögiinuur soum, Arkhangai aimag
Area Size
12,600 ha
Geographical Coordinates
47.77° N, 102.7° E
Conservation Designation
Ramsar Site
Flyway Network Site
Important Bird and Biodiversity Area
Local Protected Area
Key Habitats and Biomes
Freshwater lake
River inflow systems and marshes
Wet grasslands and reedbeds
Mountain steppe landscapes
Key Ecosystem Services and Values
Provisioning: freshwater, fisheries
Regulating: local climate regulation
Cultural: tourism and recreation
Global Climate Regulation: Estimated Carbon Storage and Sequestration Not assessed / not identified as a key service
EAAF Species Globally significant congregations:
Swan Goose Anser cygnoid (EN)
Great Crested Grebe Podiceps cristatus (LC)
Bar headed Goose Anser indicus (LC)
Whooper Swan Cygnus cygnus (LC)
Ruddy Shelduck Tadorna ferruginea (LC)
Common Goldeneye Bucephala clangula (LC)
Common Crane Grus grus (LC)
Northern Lapwing Vanellus vanellus (NT)
Mute Swan Cygnus olor (LC)

Small numbers: 
Dalmatian Pelican Pelecanus crispus (NT)
Common Pochard Aythya ferina (VU)
Siberian Crane Leucogeranus leucogeranus (CR)
White naped Crane Grus vipio (VU)
Hooded Crane Grus monacha (VU)
Relict Gull Larus relictus (VU)
 Notable Biodiversity Pallas’s Fish Eagle Haliaeetus leucoryphus (EN)
Great Bustard Otis tarda (EN)
Mongolian Marmot Marmota sibirica (EN)
Siberian Taimen Hucho taimen (VU)
Site Management
Ministry of Environment and Climate Change
Arkhangai aimag government
Ögiinuur soum government
WSCC Mongolia
Key Drivers of Change
Overgrazing and land degradation
Tourism pressure and waste pollution
Water abstraction and hydrological change
Drought and climate variability
Opportunities for RFI Interventions
Strengthening site management and zonation; Sustainable grazing and rangeland management; Biodiversity monitoring and research; Tourism management and infrastructure; Waste and pollution management
Investment Range Over Time Period
$11,750,000 over five years

Disclaimer

The views expressed on this website are those of the authors and do not necessarily reflect the views and policies of the Asian Development Bank (ADB) or its Board of Governors or the governments they represent. ADB does not guarantee the accuracy of the data included in this publication and accepts no responsibility for any consequence of their use. By making any designation of or reference to a particular territory or geographic area, or by using the term “country” in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area.

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Topics

  • Agriculture and Natural Resources
  • Climate Change
  • Environment
  • Regional Cooperation and Integration