Slate Rapids + Hoole Canyon Run of River

[PELLY-­‐PELLY-­‐0847-­‐B] + [PELLY-­‐PELLY-­‐0760-­‐A]

Project Description

Slate Rapids + Hoole Canyon Run of River is a cascade of two sites with Slate Rapids located upstream on the Pelly providing water storage and generation, and Hoole Canyon run of river located downstream operating as a run-of-river facility with no water storage (but a headpond needed to create head for generation purposes.)

The Slate Rapids project includes an approximately 57 m dam with a spillway control structure, a fish ladder, a water intake, conveyance, a 2-unit powerhouse, trailrace structures and diversions to facilitate dewatering of the dam site during construction.

The Hoole Canyon run of river project includes an approximately 71 m weir dam, a fish ladder, a water intake, conveyance, a 2-unit powerhouse, trailrace structures and diversions to facilitate dewatering of the dam site during construction.

Trade Offs

Costs are preliminary and are based on Class 5 engineering estimates.
They are used here to compare the relative costs of each site.
* Costs as calculated without a transmission line between Faro and Watson Lake

Scalability

slate-scalability

 

Figure 28: False Canyon + Middle Canyon ROR LCOEs

Construction Overview

3.6 Slate Rapids + Hoole Canyon ROR [PELLY-PELLY-0847-B + PELLY-PELLY-0760-A]
Slate Rapids + Hoole Canyon ROR is a cascade of two sites with Slate Rapids located upstream on the Pelly River providing both water storage and generation, and Hoole Canyon ROR located downstream operating as a run-of-river facility with no water storage (but a headpond needed to create head for generation purposes).

3.6.1 Slate Rapids [PELLY-PELLY-0847-B]
Slate Rapids is a potential hydroelectric project on the Pelly River, located in the Pelly River Basin approximately 75 km east of the community of Ross River. The total drainage area is estimated at 5,400 km2. The project includes two dams:

  1. An upstream diversion dam to direct the river flow towards its western upstream arm down to the
    power dam. This diversion system restricts the reservoir from expanding into the river downstream
    eastern arm which would flood a large area of the Yukon.
  2. A downstream power dam to generate electricity.
    The major components of the preliminary project layout for both dams are listed in

Table 22. The project components are shown in Figure 29 and Figure 30 and described in more detail as per
sections listed in Table 16.

3.6.12 Hoole Canyon ROR [PELLY-PELLY-0760-A] Hoole Canyon ROR is a potential ROR hydroelectric project on the Pelly River, located in the Pelly River Basin approximately 30 km upstream of the community of Ross River. The total drainage area for the dam is estimated to be 9,900 km2.

The major components of the preliminary project layout are listed in Table 23. The project components are shown in Figure 8 and described in more detail as per sections listed in Table 23.

Table 22: Slate Rapids Dams Major Project Components
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Notes:
26 – The powerhouse, switchyard and transmission line are not shown on the drawing because their location is further downstream of the dam. The transmission line is expected to follow approximately the access road from the switchyard to the interconnection point.
27 – At this stage of study, upstream fish passage is expected to be facilitated via fish ladder. During subsequent phases of development, different alternatives may be considered including, but not limited to, mechanical lifts or trap-load-haul operations. Downstream fish passage is expected to be facilitated through fish friendly turbines (e.g. Kaplan Turbine).

 

Figure 29: Slate Rapids Diversion Dam Layout

Table 23: Hoole Canyon Major Project Components
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Notes:
29 – At this stage, upstream fish passage is expected to be facilitated via fish ladder. During the subsequent phases of the projects, different alternatives may be considered including but not limited to mechanical lifts or trap-load-haul operations. Downstream fish passage is expected to be facilitated through fish friendly turbines (e.g. Kaplan Turbine).
30 – The transmission line is not shown on the drawing but is expected to follow approximately the access road from the switchyard to the interconnection point.

Figure 31: Hoole Canyon Layout

Figure B-7: Slate Rapids Reservoir
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Figure 11: Slate Rapids Priority Site and Reservoir Footprint
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Figure 12: Hoole Canyon Run-of River Priority Site