<Li> for the year - </Li> <P> 1993 . 1994 . 1995 . 1996 . 1997 . 1998 . 1999 . 2000 . 2001 . 2002 . 2003. 2004 . 2005 . </P> <P> Mean flow rates monthly and daily at Péronne (m3 / s). Catchment area 1,294 km (500 sq mi). </P> <Ul> <Li> for the year - </Li> </Ul>

Describe the valley of the somme river as it looked before the battle