Primative British fishweirs
http://ads.ahds.ac.uk/catalogue/adsdata/cbaresrep/pdf/074/07411001.pdf
Basket weir
http://www.le.ac.uk/ulas/annualreports/ar99-00/hemington/hemington.html
Fish weirs on the Tâf, Towy and Gwendraeth estuaries, Carmarthenshire.
http://web.onetel.net.uk/~rapanui/Fish_weirs/fish_weirs.htm