Beginning of meandering

Ending of meandering

Duration time

Aug. 1975

Mar.1980

4 years and 8 months

Nov. 1981

May. 1984

2 years and 7 months

Dec. 1986

Jul. 1988

1 year and 8 months

Dec. 1989

Dec. 1990

1 year and 1 month

Jul. 2004

Aug. 2005

1 year and 2 months