EA Hydro Acoustic Surveys

Spoke to a nice chap at the EA this week.  They've been doing surveys of some of the fenland waterways for a few years via a technique called hydro acoustic surveying.  Basically it sounds like a rather expensive fish finder with can record the fish present without doing a traditional netting job.  Obviously you don't get the breakdown of species etc but you do get a feeling for the stretches with a larger biomass that others.  I'm hoping to try a few of the stretches this year, see if it improves my results.  Hope yo ufind them useful: -

http://www.scribd.com/doc/21402134/Relief-Channel-2008
http://www.scribd.com/doc/21402096/Relief-Channel-2006
http://www.scribd.com/doc/21402044/Middle-Level-2009
http://www.scribd.com/doc/21402010/Middle-Level-2006
http://www.scribd.com/doc/21401958/Ely-Ouse-2008
http://www.scribd.com/doc/21401888/Ely-Ouse-2007
http://www.scribd.com/doc/21401840/Ely-Ouse-2006
http://www.scribd.com/doc/21401800/Ely-Ouse-2005

I've signed up for the mailing list so hopefully as more reports become available we'll get to see them...