Downstream data for Medway — downstream

Alden research estimates of downstream survival from the Atlantic salmon Dam Impact analysis model v67 for Medway 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 approach used in the list of downstream passage rates for medway in the run_dia function when medway = NA. The default medway = 0 reflects that this habitat is currently inaccessible by Atlantic salmon, but the data set is included as an option.

Usage

downstream_medway

Format

A dataframe with 7,589 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, Saunders R. 2015. Assessing demographic effects of dams on diadromous fish: a case study for Atlantic salmon in the Penobscot River, Maine. ICES Journal of Marine Science 72:2423–2437.

Nieland JL, Sheehan TF, Saunders R, Murphy JS, Trinko Lake TR, Stevens JR. 2013. Dam Impact Analysis model for Atlantic salmon in the Penobscot River, Maine. US Department of Commerce, Northeast Fisheries Science Center Reference Document 13-09, Woods Hole, MA.