Number of dams by natal production unit (PU) and migration route

Number of dams passed by out-migrating smolts starting in different production units by downstream migration route (`stillwater` or `mainstem`)

Usage

n_dams

Format

A dataframe with 15 observations of 3 variables

PU

Production unit of origin

stillwater

Number of dams by natal PU encountered during downstream migration if fish move through the Stillwater Branch

mainstem

Number of dams by natal PU encountered during downstream migration if fish move through the mainstem Penobscot River

Source

Nieland JL, Sheehan TF. 2020. Quantifying the Effects of Dams on Atlantic Salmon in the Penobscot River Watershed, with a Focus on Weldon Dam. US Department of Commerce, Northeast Fisheries Science Center Reference Document 19-16, Woods Hole, MA.