Salmon Weir Diagram
This diagram shows a salmon weir, as typically built in Penobscot Bay around 1880. The salmon weir had multiple pounds (the area which corralled the fish), the final fish pound's floor being set so that it was almost dry at a very low tide. This made it easier to pick up the caught fish.
Salmon weirs were different in design from herring weirs, as they had multiple pounds.
This image is from G. Brown Goode's The Fisheries and Fishery Industries of the United States, 1884-1887, Section I, Plate 271. This book can be found online at NOAA