St. George Pulp and Paper Dam - St. George, NB
Posted by: Groundspeak Premium Member T0SHEA
N 45° 07.784 W 066° 49.748
19T E 670710 N 4999654
The dam was built on the Magaguadavic River in 1902 in a picturesque area in St. George known as The Gorge by St. George Pulp and Paper to operate their mill equipment.
Waymark Code: WMPAA7
Location: New Brunswick, Canada
Date Posted: 07/28/2015
Published By:Groundspeak Premium Member fi67
Views: 3
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The company ceased operations in 1967. Now a 15 Megawatt hydro facility, the dam and hydro facility are owned by the J.D. Irving Corporation. The facility was rebuilt in 2002-2004, with the generators coming online in March or April of 2004. There's an interesting article on its construction by the Kleinschmidt Group.

In the new powerhouse were installed a pair of General Electric 7.5 MW horizontal double-regulated generators driven by horizontal Kaplan turbines. The generators are operated by Cutler Hammer switching equipment.

Built behind the dam is the world’s first artificial fishway. Built in 1928, its purpose was to allow Atlantic salmon and other fish to pass upriver to spawn after the dam at St. George had blocked their access.
New Hydro Powerhouse Construction

Kleinschmidt Solution:
Kleinschmidt worked with Irving to obtain governmental approval, address rock tunnel design conditions, and water-to wire equipment selection that needed to address a nearly 30 foot range of tidal tailwater elevations. Kleinschmidt began final design of the entire new facility with civil/ structural features, two new horizontal Kaplan hydroelectric turbines and all plant mechanical and electrical systems. Other features designed by Kleinschmidt included a new post-tensioned forebay dam and gated spillway, downstream fish sampling and passage system, an intake with a mechanical trashrack raker, and two 11 foot diameter buried steel penstocks. A new 66’W x 84’L reinforced concrete powerhouse set 124’ below grade with the discharge through a 22’ diameter x 425’L bifurcated rock tailrace tunnel complete this project’s challenging civil features. The tunnel construction costs were lowered by implementing a unique reinforced rock plug at the tunnel exit that eliminated costly cofferdamming. Kleinschmidt also provided construction services working with the construction manager.

Client Benefits:
Kleinschmidt’s comprehensive flexible final design allowed Irving to maximize generation with the existing station during construction. Kleinschmidt worked with Irving to design an integrated turbine and station service logic that governs the inter-related gates, alarms, and turbine equipment for switchgear and station controls equipment purchased by Irving from a local supplier which reduced capital costs and facilitates cost-effective maintenance.
From the Kleinschmidt Group
Operational: yes

Type of power station: Conventional (dams)

Type of turbine: Kaplan

Operator: J.D. Irving Corporation

Visitor center: no

Date built: 03/01/2004

Generation capacity: 15 MW
Visit Instructions:
For posting a log to an existing waymark, you will need to post a unique picture of the power station. If is not open to the public, please do not enter private property. A picture from the distance is sufficent. If it's possible to enter the machine hall, a picture of it would be nice. Please add some additional informations if possible.
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Recent Visits/Logs:
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petendot visited St. George Pulp and Paper Dam - St. George, NB 09/16/2023 petendot visited it