Downstream data for Milford — downstream

Alden research estimates of downstream survival from the Atlantic salmon Dam Impact analysis model v67 for Milford Dam. Annual survival estimates from a variety of acoustic- and radio-telemetry studies were correlated with annual, in-river discharge data from hydropower facilities by Amaral et al. (2012) to result in cumulative distribution functions from which smolt survival can be drawn probabilistically. This is the default approach used in the list of downstream passage rates for milford in the run_dia function when milford = NA. This dataset was updated in 2020 following changes to the hydrosystem associated with the Penobscot River Restoration Project (Nieland et al. 2020).

Usage

downstream_milford

Format

A dataframe with 9,356 observations of 4 variables

flow_cfs: Value of flow (discharge)
cumulative_prob: Cumulative flow probability
flow_prob: Probability of individual flow value
smolt_surv_prob: Smolt survival probability given flow

Source

Amaral S, Fay C, Hecker G, Perkins N. 2012. Atlantic salmon survival estimates at mainstem hydroelectric projects on the Penobscot River. Holden (MA): Alden Research Laboratory, Inc. Phase 3 Final Report.

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.