Mica Tailrace Fish Indexing Study – Second Interim Report prepared for BC Hydro
Author: J. Bisset, R.I. irvine, J.L. Thorley
Asses the potential impacts of two additional turbine units (Mica 5 and 6) on the ichthyofauna and thermal regime immediately below Mica Dam (tailrace)
In 2013 a total of 231 fishes of three species were captured, including nine Bull Trout (366-820mm and 466g — 6kg) 125 Kokanee (67 — 388mm and 1g — 674g) and 96 Mountain Whitefish (75 —367mm and 3 — 438g). Over all sites a total of 1006 fishes were observed, which included two Rainbow Trout, 515 Mountain Whitefish, 440 Kokanee and 23 Bull Trout.
At site EF01, no fish were captured. At site EF02, one (1) Prickly Sculpin and six (6) unidentified Sculpins species were captured, and ranged in length from 17 to 28 mm. At site EF03, a total of 19 fishes, including one (1) Kokanee (89mm length), eight (8) Slimy Sculpin, four (4) Prickly Sculpin and six (6) unidentified Sculpins which ranged in size from 21mm to 82mm were captured. At site EF04, four (4) Slimy Sculpin, two (2) Prickly Sculpin and three (3) unidentified sculpin species were captured. Fishes ranged in size from 25 to 87mm.
The temperature data collected to date shows no consistent difference between left and right banks in the tailrace section. We will discuss the proposed alterations to the headpond area with project and BC Hydro staff. We recommend that the existing temperature monitoring remain continuous throughout the project to completion, to allow more interpretation and analysis of temperature trends.
In 2013 a total of 231 fishes of three species were captured, including nine Bull Trout (366-820mm and 466g — 6kg) 125 Kokanee (67 — 388mm and 1g — 674g) and 96 Mountain Whitefish (75 —367mm and 3 — 438g). Over all sites a total of 1006 fishes were observed, which included two Rainbow Trout, 515 Mountain Whitefish, 440 Kokanee and 23 Bull Trout.
At site EF01, no fish were captured. At site EF02, one (1) Prickly Sculpin and six (6) unidentified Sculpins species were captured, and ranged in length from 17 to 28 mm. At site EF03, a total of 19 fishes, including one (1) Kokanee (89mm length), eight (8) Slimy Sculpin, four (4) Prickly Sculpin and six (6) unidentified Sculpins which ranged in size from 21mm to 82mm were captured. At site EF04, four (4) Slimy Sculpin, two (2) Prickly Sculpin and three (3) unidentified sculpin species were captured. Fishes ranged in size from 25 to 87mm.
The temperature data collected to date shows no consistent difference between left and right banks in the tailrace section. We will discuss the proposed alterations to the headpond area with project and BC Hydro staff. We recommend that the existing temperature monitoring remain continuous throughout the project to completion, to allow more interpretation and analysis of temperature trends.
Resources Data:
Name: CLBMON-60-YR2-2015-01-01
Format: PDF
URL: https://www.bchydro.com/content/dam/BCHydro/customer-portal/documents/corporate/environment-sustainability/water-use-planning/southern-interior/clbmon-60-yr2-2015-01-01.pdf
Additional Info
Study Years: 2012, 2013
Published: 2014
Topics
Tags: Bull Trout, Cottus Asper, Cottus Cognatus, Electrofishing, Inventory, Kokanee, Mica 5, Mica 5 6, Mica 6, Mica Dam, Mountain Whitefish, Oncorhynchus Mykiss, Oncorhynchus Nerka, Prickly Sculpin, Prosopium Williamsoni, Rainbow Trout, Revelstoke Reservoir, Salvelinus Confluentus, Slimy Sculpin, Tailrace, Thermal Regime, Water TemperatureMica Tailrace Fish Indexing Study – Second Interim Report prepared for BC Hydro
Author: J. Bisset, R.I. irvine, J.L. Thorley
Tags: Bull Trout, Cottus Asper, Cottus Cognatus, Electrofishing, Inventory, Kokanee, Mica 5, Mica 5 6, Mica 6, Mica Dam, Mountain Whitefish, Oncorhynchus Mykiss, Oncorhynchus Nerka, Prickly Sculpin, Prosopium Williamsoni, Rainbow Trout, Revelstoke Reservoir, Salvelinus Confluentus, Slimy Sculpin, Tailrace, Thermal Regime, Water Temperature
Asses the potential impacts of two additional turbine units (Mica 5 and 6) on the ichthyofauna and thermal regime immediately below Mica Dam (tailrace)
Summary
In 2013 a total of 231 fishes of three species were captured, including nine Bull Trout (366-820mm and 466g — 6kg) 125 Kokanee (67 — 388mm and 1g — 674g) and 96 Mountain Whitefish (75 —367mm and 3 — 438g). Over all sites a total of 1006 fishes were observed, which included two Rainbow Trout, 515 Mountain Whitefish, 440 Kokanee and 23 Bull Trout.
At site EF01, no fish were captured. At site EF02, one (1) Prickly Sculpin and six (6) unidentified Sculpins species were captured, and ranged in length from 17 to 28 mm. At site EF03, a total of 19 fishes, including one (1) Kokanee (89mm length), eight (8) Slimy Sculpin, four (4) Prickly Sculpin and six (6) unidentified Sculpins which ranged in size from 21mm to 82mm were captured. At site EF04, four (4) Slimy Sculpin, two (2) Prickly Sculpin and three (3) unidentified sculpin species were captured. Fishes ranged in size from 25 to 87mm.
The temperature data collected to date shows no consistent difference between left and right banks in the tailrace section. We will discuss the proposed alterations to the headpond area with project and BC Hydro staff. We recommend that the existing temperature monitoring remain continuous throughout the project to completion, to allow more interpretation and analysis of temperature trends.