JP126Lake Kojimako, Lake Abeike

Site Description

Wetlands

Kojimako is a shallow lake stretching from Okayama City to Tamano City in Okayama Prefecture, with an area of 1,088 ha and average depth of 2.4 m. The lake is an artificial desalinated lake created in 1962 by separating a part of the Kojima Bay with a drainage gate. In 1975, Chemical Oxygen Demand (COD) had deteriorated to 11 ppm. But, due to various efforts made thereafter including the creation of artificial reed beds and the dredging of sludge silted on the bottom of the lake, the COD figure has decreased to around 9 ppm. The number of wintering ducks visiting this site exceeds 40,000.

Area & Coordinates

1,000ha 34°35′N 133°57′E
region: Chugoku Region, Okayama

Category

A4iii

Designation Type

Wildlife Protection Area (Local)

Protection Status

Unprotected

Conservation issues

• Fill-in of wetland
• Consequences of animal/plants/ introductions
• Other