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Location Japan, Ehime
Central coordinates 133o 9.00' East  33o 56.00' North
IBA criteria A1, A4i
Area 470 ha
Altitude 0 - 6m
Year of IBA assessment 2004

Wild Bird Society of Japan

Site description The Kamogawa river originates from the Mt Ishizuchisan system in Ehime Prefecture. In the area around the mouth of the river, combined with the tidal flats of the adjacent Nakayama river, tidal flats total 383 ha, the largest in Ehime Prefecture. At tidal flats of sandy nature there live many crabs, although coastlines are protected by concrete reinforcement structures. Around the mouth of the rivers there are also paddy fields, and many birds are seen at the mouth of the rivers. In the area at the tip of the tidal flats, seaweed cultivations are carried out actively particularly in winter.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Grey-tailed Tattler Tringa brevipes passage  2004  present  A4i  Near Threatened 
Whimbrel Numenius phaeopus passage  2004  present  A4i  Least Concern 
Saunders's Gull Saundersilarus saundersi winter  2004  present  A1  Vulnerable 

IBA Monitoring

2010 low not assessed negligible
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

Some of site covered (10-49%)  Unknown  Unknown  negligible 


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Estuarine waters; Intertidal mud, sand or salt flats  -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Kamogawa estuary. Downloaded from on 25/10/2016

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