email a friend
printable version
Location Japan, Shimane
Central coordinates 132o 56.00' East  35o 26.00' North
IBA criteria A4i, A4iii
Area 9,639 ha
Altitude 0 - 20m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description Lake Shinjiko is a brackish lake located at the downstream area of the Hiigawa river in Shimane Prefecture. The lake is about 45 km around. Most coastlines are reinforced with concrete except the mouth area of the Hiigawa river where small crescents of sand and reed beds remain. Some rare species of fish occurs here.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greater White-fronted Goose Anser albifrons winter  2004  present  A4i  Least Concern 
Tufted Duck Aythya fuligula winter  2004  present  A4i  Least Concern 
Greater Scaup Aythya marila winter  2004  present  A4i  Least Concern 
A4iii Species group - waterbirds winter  2004  min 20,000 individuals  A4iii   

IBA Monitoring

2010 low not assessed low
Poor - based on little, or potentially unreliable/unrepresentative, data

No known threats no known threats happening now whole area/population (>90%) no or imperceptible deterioration low

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Unknown  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Shinji Prefectural Wildlife Protection Area 8,800 protected area contained by site 8,800  
Shinji-ko Wetlands of International Importance (Ramsar) 7,652 protected area contained by site 7,652  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Coastal lagoons; Rivers and streams  -

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Lake Shinjiko. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife