White Sturgeon (Acipenser transmontanus): amended recovery strategy [sect. 8.4 to 8.4.2]
8.4 Nechako River population
In the Nechako system, white sturgeon occur from the confluence with the Fraser River, upstream to Cheslatta Falls including Fraser Lake, and through much of the Stuart River watershed, a major tributary. This population is referred to as Nechako River white sturgeon. Data indicate limited movement of Nechako white sturgeon into the Fraser; however, feeding at the Fraser River confluence has been observed. Current distribution in the Nechako may be limited by population declines and the alteration of flows (and related effects) below Kenney Dam (NWSRI 2005).
The information base for the Nechako white sturgeon population is substantial, based on many years of intensive study. High use habitats have been identified for all life stages, and this information is summarized in Table 9. As additional information is collected through recruitment failure diagnosis, it will become possible to refine existing information on critical habitat.
| Location (see Figure 14 for basin overview) |
Spawn | Yolk sac larvae and feeding larvae | Early juvenile | Late juvenile and adult | Overwintering | Staging | Overall assessment |
|---|---|---|---|---|---|---|---|
| Vanderhoof braided section | (√) H | (√) H | - | - | - | (√) H | Critical |
| Sinkut River Confluence | - | - | (√) H | (√) H | (√) H | (√) H | Critical |
| Leduc Creek Confluence | - | - | (√) H | (√) H | (√) H | (√) H | Critical |
| Finmoore | - | - | (√) H | (√) H | - | - | Critical |
| Keilor's Point | - | - | (√) H | (√) H | (√) M | (√) M | Critical |
| Culvert Hole | - | - | (?) H | - | (√) M | - | Critical |
| Powerline | - | - | (?) H | - | (√) M | - | Critical |
| Sturgeon Point | - | - | - | (√) M | (S) M | - | Critical |
| Pinchi Bay on Stuart Lake | - | - | - | (√) H | (√) M | - | Critical |
| Tachie River Confluence with Stuart Lake | - | - | - | (√) H | (√) M | - | Critical |
| Lower Half of Stuart Lake | - | - | - | (√) M | (S) M | - | Critical |
| Middle River Confluence with Trembleur Lake | - | - | - | (√) M | (S) M | - | Critical |
| Fraser Lake | - | - | - | (√) M | (S) M | - | Critical |
8.4.1 Biophysical functions, features and attributes of critical habitat – Nechako River population
Table 10 summarizes the critical habitat function(s), features and attributes, to the extent possible, for the Nechako population of white sturgeon.
| Geographic Location | Life Stage | Function | Feature(s) | Attribute(s) | Notes |
|---|---|---|---|---|---|
| Vanderhoof braided section | Yolk Sac Larvae | Rearing | Hydraulic conditions particular to this location, see attributes |
|
The only confirmed location for spawning in the Nechako River. The precise spawning site in this area might change from year to year depending on flow conditions. Larval development includes the period from hatch to exogenous feeding (0 to ~12 days at 15ºC). Critical habitat during this period will be located in the braided section of the Nechako River near Vanderhoof, extending downstream beyond the boundaries of the spawning and incubation area. Because studies are ongoing, its downstream extent cannot be defined with certainty at this time. Rearing areas are used from May to July. Habitat utilization by feeding larvae at this site is uncertain due to its small size, residence in large rivers, and possibly its nocturnal activity pattern. Despite this uncertainty, research attention is likely best focussed on spawning/incubation/hiding habitat which appears to have a stronger link to the causes of decline. Rearing areas are used from May to July. Staging areas are used from November to July. |
| Feeding Larvae | Rearing Feeding | Food availability often associated with: Benthic substrates |
|
||
| Adult | Staging | Deep pools Runs (between deeper pools) |
|
||
| Spawning and incubation | Hydraulic conditions particular to this location, see attributes |
|
|||
Sinkut River Confluence Keilor’s Point |
Early Juvenile | Rearing Feeding | Deeper pools and adjacent areas that provide resting and feeding opportunities And food availability often associated with the above |
|
There has been confirmed use of early juveniles at kms 110, 116, and 125. Juveniles can occupy all depths. Rearing and feeding areas are used all year Feeding areas are used all year Overwintering areas are used from September to May, all year for early juveniles. Connectivity may be an issue during low flows Staging areas are used from November to July. |
| Late Juvenile and Adult | Feeding | Food availability often associated with: Deep pools and adjacent feeding areas |
|
||
| Overwintering | Deep pools Runs Eddies |
|
|||
| Adult | Staging | Deep pools Runs |
|
||
| Finmoore | Late Juvenile and Adult | Feeding | Food availability often associated with: Deep pools Confluence with tributary that provides spawning habitat for salmon |
|
Confirmed high use site. Feeding areas are used all year. Overwintering use is unknown, but habitat is suitable for overwintering and necessary for recovery. |
| Overwintering | Feature(s) not confirmed |
|
|||
Culvert Hole Powerline |
Early Juvenile | Rearing Feeding | Deeper pools and adjacent areas that provide resting and feeding opportunities And food availability often associated with the above |
|
Confirmed use of fish less than 1m in length. Rearing areas are used all year. Adult feeding use is unknown, however salmon have been observed in area so potential exists. Staging areas are used from November to July. |
| Adult | Feeding | Feature(s) not confirmed |
|
||
| - | Staging | Deep pools Runs (between deep pools) |
|
||
Tachie River Confluence with Stuart Lake Pinchi Bay on Stuart Lake Middle River Confluence with Trembleur Lake |
Late Juvenile and Adult | Feeding | Food availability often associated with: Migration corridors and confluence with tributaries that provide spawning habitat for salmon and mussel beds |
|
Confirmed high use site. Feeding areas are used all year. Overwintering use is unknown. |
| Overwintering | Feature(s) not confirmed |
|
|||
| Sturgeon Point | Late Juvenile and Adult | Feeding | Feature(s) not confirmed |
|
- |
Lower Half of Stuart Lake Fraser Lake |
Late Juvenile and Adult | Feeding | Food availability often associated with: Lake habitat and migration corridors to confluences |
|
Essential holding and feeding area (based on captures and historical information). The lower half of Stuart Lake is critical, but it is not known if the rest of the lake is. It should be noted however, that the whole lake has to be functional in order for there to be adequate productivity. Fraser Lake is an essential feeding area for white sturgeon. In addition, access and the productivity of the lake is also essential to white sturgeon survival and recovery. Therefore, the designation takes into account both the direct use of the lake for feeding and the indirect, but equally significant, attribute of connectivity and food production/abundance. Fish spend significant time in these areas and usually do this in between spawning (however, use of this site is not limited to spawners). Feeding areas are used all year. |
Overwintering |
Feature(s) not confirmed |
|
8.4.2 Geographic identification of critical habitat – Nechako River population
The following locations of the critical habitat’s functions, features and attributes have been identified using the critical habitat parcel approach.
Long description
Figure 14. This is a map of the Nechako River system showing an overview of critical habitat locations. Critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. Thirteen locations centered roughly around Fort St. James are labelled on a map of British Columbia as follows: Mid River Confluence, Tachie River Confluence, Pinchi Bay, Lower Half Stuart Lake, Fraser Lake, Vanderhoof Braided Section, Culvert Hole, Leduc Creek Confluence, Powerline Crossing, Keilor’s Point, Sinkut River, Nechako Finmoore, and Sturgeon Point. A scale and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 15 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Vanderhoof Braided Section. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Vanderhoof Braided Section of the Nechako River map is also labeled with codes that correspond to codes used to identify the polygon in Table 11.The boundaries of the Nechako Migratory Bird Sanctuary are highlighted in a contrasting black and white pattern. A scale of 1:39,000 and a legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 16. Figure 16 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Sinkut River confluence with the Nechako River. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Sinkut River confluence with the Nechako River map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:12,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 17. Figure 17 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Leduc Creek confluence with the Nechako River. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Leduc Creek confluence with the Nechako River map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:10,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 18. Figure 18 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Finmoore. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Finmoore map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:50,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 19. Figure 19 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Keilor’s Point. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Keilor’s Point map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:10,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 20. Figure 20 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Culvert Hole. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Culvert Hole map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:4,500 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 21. Figure 21 is a map of a section of the Nechako River, British Columbia, showing the critical habitat location Powerline. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Powerline map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:7,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 22. Figure 22 is a map of a section of the Stuart River, British Columbia, showing the critical habitat location Sturgeon Point. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Sturgeon Point map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:11,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 23. Figure 23 is a map of a section of Stuart Lake, British Columbia, showing the critical habitat location Pinchi Bay on Stuart Lake. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Pinchi Bay on Stuart Lake map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:25,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 24. Figure 24 is a map of a section of Stuart Lake, British Columbia, showing the critical habitat location Tachie River confluence with Stuart Lake. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Tachie River confluence with Stuart Lake map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:22,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 25. Figure 25 is a map of a section of Stuart Lake, British Columbia, showing the critical habitat location Lower Half of Stuart Lake. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Lower Half of Stuart Lake map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:110,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 26. Figure 26 is a map of a section of Trembleur Lake, British Columbia, showing the critical habitat location Middle River confluence with Trembleur Lake. The map depicts a polygon that has been identified as critical habitat for Nechako River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 11. The critical habitat polygon in the Middle River confluence with Trembleur Lake map is also labeled with codes that correspond to codes used to identify the polygon in Table 11. A scale of 1:21,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 27. Figure 27 is a map of Fraser Lake, British Columbia, showing the critical habitat locations of Fraser Lake and the Nautley River confluence with the Nechako River. The map depicts two polygons that have been identified as critical habitat for Nechako River white sturgeon. In the identified polygons, critical habitat includes aquatic habitat features and attributes that Nechako River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygons’ boundaries are listed in Table 11. The critical habitat polygons in Fraser Lake and the Nautley River confluence with the Nechako River map are also labeled with codes that correspond to codes used to identify the polygons in Table 11. A scale of 1:149,000 and legend are provided along with an inset map showing locations are primarily in the Omineca zone of British Columbia. The map is oriented in a “north is up” direction.
| Critical Habitat Name | Coordinate Marker | Waterbody | River Kilometer | Latitude (DD) | Longitude (DD) | Latitude (DMS) | Longitude (DMS) |
|---|---|---|---|---|---|---|---|
| Nechako - Culvert Hole | Nr-CH1 | Nechako River | 132.2 | 54.011 | -123.975 | 54° 0' 40" N | 123° 58' 30" W |
| Nechako - Culvert Hole | Nr-CH2 | Nechako River | 132.2 | 54.010 | -123.975 | 54° 0' 38" N | 123° 58' 28" W |
| Nechako - Culvert Hole | Nr-CH3 | Nechako River | 132.8 | 54.011 | -123.984 | 54° 0' 41" N | 123° 59' 3" W |
| Nechako - Culvert Hole | Nr-CH4 | Nechako River | 132.8 | 54.012 | -123.982 | 54° 0' 43" N | 123° 58' 56" W |
| Nechako - Finmoore | Nr-FMR1 | Nechako River | 90.3 | 53.993 | -123.525 | 53° 59' 36" N | 123° 31' 30" W |
| Nechako - Finmoore | Nr-FMR2 | Nechako River | 90.3 | 53.993 | -123.524 | 53° 59' 33" N | 123° 31' 26" W |
| Nechako - Finmoore | Nr-FMR3 | Nechako River | 98.4 | 53.983 | -123.634 | 53° 58' 59" N | 123° 38' 2" W |
| Nechako - Finmoore | Nr-FMR4 | Nechako River | 98.4 | 53.984 | -123.636 | 53° 59' 3" N | 123° 38' 10" W |
| Nechako - Finmoore | Nr-FMR5 | Stuart River | 0.2 | 53.990 | -123.542 | 53° 59' 24" N | 123° 32' 33" W |
| Nechako - Finmoore | Nr-FMR6 | Stuart River | 0.2 | 53.989 | -123.539 | 53° 59' 21" N | 123° 32' 22" W |
| Nechako - Fraser Lake | Nr-FL1 | Nechako River | 191.3 | 54.084 | -124.582 | 54° 5' 1" N | 124° 34' 56" W |
| Nechako - Fraser Lake | Nr-FL2 | Nechako River | 191.3 | 54.083 | -124.583 | 54° 4' 59" N | 124° 34' 57" W |
| Nechako - Fraser Lake | Nr-FL3 | Nechako River | 192.3 | 54.079 | -124.589 | 54° 4' 45" N | 124° 35' 20" W |
| Nechako - Fraser Lake | Nr-FL4 | Nechako River | 192.3 | 54.079 | -124.590 | 54° 4' 45" N | 124° 35' 25" W |
| Nechako - Fraser Lake | Nr-FL5 | Nautley River | 0.5 | 54.085 | -124.595 | 54° 5' 7" N | 124° 35' 42" W |
| Nechako - Fraser Lake | Nr-FL6 | Nautley River | 0.5 | 54.086 | -124.595 | 54° 5' 8" N | 124° 35' 42" W |
| Nechako - Fraser Lake | Nr-FL7 | Fraser Lake | 1.0 | 54.086 | -124.602 | 54° 5' 9" N | 124° 36' 8" W |
| Nechako - Fraser Lake | Nr-FL8 | Fraser Lake | 1.0 | 54.085 | -124.602 | 54° 5' 7" N | 124° 36' 8" W |
| Nechako - Fraser Lake | Nr-FL9 | Stellako River | - | 54.046 | -124.906 | 54° 2' 46" N | 124° 54' 20" W |
| Nechako - Fraser Lake | Nr-FL10 | Stellako River | - | 54.050 | -124.894 | 54° 2' 59" N | 124° 53' 37" W |
| Nechako - Fraser Lake | Nr-FL11 | Stellako River | - | 54.052 | -124.887 | 54° 3' 6" N | 124° 53' 13" W |
| Nechako - Fraser Lake | Nr-FL12 | Fraser Lake | - | 54.060 | -124.899 | 54° 3' 37" N | 124° 53' 56" W |
| Nechako - Fraser Lake | Nr-FL13 | Fraser Lake | - | 54.100 | -124.847 | 54° 5' 59" N | 124° 50' 50" W |
| Nechako - Keilor's Point | Nr-KP1 | Nechako River | 109.6 | 53.967 | -123.785 | 53° 58' 3" N | 123° 47' 7" W |
| Nechako - Keilor's Point | Nr-KP2 | Nechako River | 109.6 | 53.966 | -123.788 | 53° 57' 59" N | 123° 47' 15" W |
| Nechako - Keilor's Point | Nr-KP3 | Nechako River | 110.8 | 53.971 | -123.798 | 53° 58' 14" N | 123° 47' 52" W |
| Nechako - Keilor's Point | Nr-KP4 | Nechako River | 110.8 | 53.970 | -123.796 | 53° 58' 14" N | 123° 47' 45" W |
| Nechako - Leduc Creek Confluence | Nr-LCC1 | Nechako River | 124.8 | 54.007 | -123.918 | 54° 0' 23" N | 123° 55' 4" W |
| Nechako - Leduc Creek Confluence | Nr-LCC2 | Nechako River | 124.8 | 54.006 | -123.919 | 54° 0' 21" N | 123° 55' 7" W |
| Nechako - Leduc Creek Confluence | Nr-LCC3 | Nechako River | 126.2 | 54.012 | -123.927 | 54° 0' 42" N | 123° 55' 36" W |
| Nechako - Leduc Creek Confluence | Nr-LCC4 | Nechako River | 126.2 | 54.013 | -123.928 | 54° 0' 46" N | 123° 55' 39" W |
| Nechako - Lower Half of Stuart Lake | Nr-LHSL1 | Stuart River | 109.3 | 54.417 | -124.271 | 54° 25' 1" N | 124° 16' 14" W |
| Nechako - Lower Half of Stuart Lake | Nr-LHSL2 | Stuart River | 109.3 | 54.417 | -124.272 | 54° 25' 1" N | 124° 16' 20" W |
| Nechako - Lower Half of Stuart Lake | Nr-LHSL3 | Stuart Lake | 13.2 | 54.453 | -124.482 | 54° 27' 12" N | 124° 28' 55" W |
| Nechako - Lower Half of Stuart Lake | Nr-LHSL4 | Stuart Lake | 13.2 | 54.476 | -124.428 | 54° 28' 34" N | 124° 25' 41" W |
| Nechako - Lower Half of Stuart Lake | Nr-LHSL5 | Stuart Lake | 13.2 | 54.497 | -124.378 | 54° 29' 49" N | 124° 22' 41" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr-MRTL1 | Middle River | 1.4 | 54.872 | -125.138 | 54° 52' 20" N | 125° 8' 16" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr-MRTL2 | Middle River | 1.4 | 54.873 | -125.137 | 54° 52' 23" N | 125° 8' 13" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr-MRTL3 | Trembleur Lake | 13.5 | 54.867 | -125.116 | 54° 52' 2" N | 125° 6' 59" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL4 | Trembleur Lake | - | 54.878 | -125.105 | 54° 52' 41" N | 125° 6' 16" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL5 | Trembleur Lake | - | 54.872 | -125.095 | 54° 52' 19" N | 125° 5' 42" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL6 | Trembleur Lake | 11.2 | 54.860 | -125.095 | 54° 51' 38" N | 125° 5' 41" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL7 | Trembleur Lake | - | 54.852 | -125.107 | 54° 51' 7" N | 125° 6' 26" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL8 | Trembleur Lake | - | 54.852 | -125.123 | 54° 51' 6" N | 125° 7' 21" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr- MRTL9 | Trembleur Lake | - | 54.854 | -125.129 | 54° 51' 13" N | 125° 7' 44" W |
| Nechako - Middle River Confluence with Trembleur Lake | Nr-MRTL10 | Trembleur Lake | 0.0 | 54.865 | -125.120 | 54° 51' 55" N | 125° 7' 13" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL1 | Pinchi Creek | - | 54.567 | -124.484 | 54° 34' 0" N | 124° 29' 3" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL2 | Stuart Lake | - | 54.562 | -124.486 | 54° 33' 44" N | 124° 29' 8" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL3 | Stuart Lake | - | 54.562 | -124.487 | 54° 33' 43" N | 124° 29' 12" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL4 | Stuart Lake | - | 54.563 | -124.489 | 54° 33' 46" N | 124° 29' 19" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr- PBSL5 | Stuart Lake | - | 54.558 | -124.474 | 54° 33' 30" N | 124° 28' 25" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr- PBSL6 | Stuart Lake | - | 54.556 | -124.488 | 54° 33' 21" N | 124° 29' 18" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL7 | Stuart Lake | - | 54.557 | -124.498 | 54° 33' 24" N | 124° 29' 53" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr- PBSL8 | Stuart Lake | - | 54.559 | -124.502 | 54° 33' 32" N | 124° 30' 9" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr- PBSL9 | Stuart Lake | - | 54.564 | -124.507 | 54° 33' 52" N | 124° 30' 24" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr- PBSL10 | Stuart Lake | - | 54.568 | -124.506 | 54° 34' 5" N | 124° 30' 21" W |
| Nechako - Pinchi Bay on Stuart Lake | Nr-PBSL11 | Stuart Lake | - | 54.564 | -124.490 | 54° 33' 50" N | 124° 29' 23" W |
| Nechako - Powerline | Nr-PL1 | Nechako River | 129.5 | 54.027 | -123.964 | 54° 1' 37" N | 123° 57' 49" W |
| Nechako - Powerline | Nr-PL2 | Nechako River | 129.5 | 54.026 | -123.964 | 54° 1' 34" N | 123° 57' 51" W |
| Nechako - Powerline | Nr-PL3 | Nechako River | 130.4 | 54.024 | -123.972 | 54° 1' 27" N | 123° 58' 20" W |
| Nechako - Powerline | Nr-PL4 | Nechako River | 130.4 | 54.025 | -123.970 | 54° 1' 28" N | 123° 58' 13" W |
| Nechako - Sinkut River Confluence | Nr-SRC1 | Nechako River | 115.2 | 53.982 | -123.841 | 53° 58' 55" N | 123° 50' 28" W |
| Nechako - Sinkut River Confluence | Nr-SRC2 | Nechako River | 115.2 | 53.981 | -123.843 | 53° 58' 52" N | 123° 50' 34" W |
| Nechako - Sinkut River Confluence | Nr-SRC3 | Nechako River | 118.3 | 53.992 | -123.832 | 53° 59' 32" N | 123° 49' 55" W |
| Nechako - Sinkut River Confluence | Nr-SRC4 | Nechako River | 118.3 | 53.994 | -123.831 | 53° 59' 40" N | 123° 49' 52" W |
| Nechako - Sturgeon Point | Nr-SP1 | Stuart River | 48.4 | 54.164 | -123.651 | 54° 9' 52" N | 123° 39' 4" W |
| Nechako - Sturgeon Point | Nr-SP2 | Stuart River | 48.4 | 54.164 | -123.651 | 54° 9' 49" N | 123° 39' 4" W |
| Nechako - Sturgeon Point | Nr-SP3 | Stuart River | 51.4 | 54.177 | -123.653 | 54° 10' 39" N | 123° 39' 12" W |
| Nechako - Sturgeon Point | Nr-SP4 | Stuart River | 51.4 | 54.178 | -123.653 | 54° 10' 42" N | 123° 39' 12" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL1 | Tachie River | 0.9 | 54.663 | -124.781 | 54° 39' 48" N | 124° 46' 52" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL2 | Tachie River | 0.9 | 54.664 | -124.779 | 54° 39' 51" N | 124° 46' 45" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL3 | Stuart Lake | 45.7 | 54.653 | -124.762 | 54° 39' 10" N | 124° 45' 43" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL4 | Stuart Lake | - | 54.651 | -124.741 | 54° 39' 5" N | 124° 44' 29" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL5 | Stuart Lake | - | 54.648 | -124.744 | 54° 38' 54" N | 124° 44' 38" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL6 | Stuart Lake | - | 54.646 | -124.751 | 54° 38' 45" N | 124° 45' 5" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL7 | Stuart Lake | 44.1 | 54.645 | -124.768 | 54° 38' 41" N | 124° 46' 6" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL8 | Stuart Lake | - | 54.645 | -124.778 | 54° 38' 43" N | 124° 46' 42" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL9 | Stuart Lake | - | 54.647 | -124.782 | 54° 38' 48" N | 124° 46' 54" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL10 | Stuart Lake | - | 54.655 | -124.789 | 54° 39' 17" N | 124° 47' 21" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr- TRSL11 | Stuart Lake | - | 54.658 | -124.788 | 54° 39' 28" N | 124° 47' 18" W |
| Nechako - Tachie River Confluence with Stuart Lake | Nr-TRSL12 | Stuart Lake | 45.7 | 54.656 | -124.775 | 54° 39' 23" N | 124° 46' 29" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB1 | Nechako River | 135.1 | 54.021 | -123.995 | 54° 1' 17" N | 123° 59' 42" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB2 | Nechako River | 135.1 | 54.021 | -123.994 | 54° 1' 14" N | 123° 59' 37" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB3 | Nechako River | 135.3 | 54.020 | -123.997 | 54° 1' 10" N | 123° 59' 49" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB4 | Stoney Creek | - | 54.018 | -124.035 | 54° 1' 6" N | 124° 2' 6" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB5 | Stoney Creek | - | 54.018 | -124.036 | 54° 1' 6" N | 124° 2' 9" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB6 | Nechako River | 141.0 | 54.023 | -124.071 | 54° 1' 22" N | 124° 4' 14" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB7 | Nechako River | 141.9 | 54.029 | -124.077 | 54° 1' 45" N | 124° 4' 38" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB8 | Nechako River | 141.9 | 54.031 | -124.075 | 54° 1' 51" N | 124° 4' 29" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB9 | Nechako River | 141.5 | 54.028 | -124.071 | 54° 1' 41" N | 124° 4' 15" W |
| Nechako - Vanderhoof Braided Section | Nr-VFB10 | Nechako River | 135.3 | 54.021 | -123.997 | 54° 1' 15" N | 123° 59' 49" W |
a. Coordinate points were digitized using various orthophotos provided by Fisheries and Oceans Canada. The resolution of the various orthophotos varied significantly - ranging from 0.2 m cell size to 24 m cell size. This should be taken into consideration when evaluating the accuracy of the coordinates associated with these points. For geographic coordinate points their boundary represents the annual high water mark (Hatfield et al. 2012).
Note: For the Nechako River, relative locations are measured as “river kilometers”, which increase from the river mouth (Rkm 0) upstream to the farthest extent possible.
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