White Sturgeon (Acipenser transmontanus): amended recovery strategy [sect. 8.5 to 8.5.2]
8.5 Upper Columbia River population
The current distribution of the Columbia River population resides in the upper Columbia River from Revelstoke (REV) Dam to Grand Coulee Dam (Washington), as well as in the lower Kootenay River from its confluence with the Columbia River to Brilliant Dam (Figure 3). Studies conducted on Columbia River white sturgeon are divided among the following population components:
- Transboundary Reach, 56 km of riverine habitat located between HLK Dam and the Canada-U.S. border, including the small section of river in the lower Kootenay River below Brilliant Dam
- Arrow Lakes Reservoir (ALR), 230 km of riverine and lacustrine habitat located from REV to HLK Dams; and
- Roosevelt Reach (FDR), from the U.S. border downstream
The transboundary nature of this population requires that recovery efforts be coordinated across multiple jurisdictions. Since SARA is Canadian legislation, only critical habitat identification in Canada is addressed.
Remnant population components may also exist upstream of the ALR component (i.e. between REV and Mica Dams and in the Kinbasket Reservoir) but investigations have not captured white sturgeon at this time. Given the large size of these reservoirs, the failure to catch a white sturgeon does not necessarily preclude their existence, but would suggest that population densities are very low (RL&L Environmental Services Ltd. 2000b).
The following sections discuss the ALR component (Table 12) and the transboundary component (Table 13) separately.
| Location (see Figure 28 for basin overview) |
Spawn | Yolk Sac larvae and Feeding Larvae | Early juvenile | Late juvenile and adult | Over wintering | Staging | Overall assessment |
|---|---|---|---|---|---|---|---|
| Columbia River adjacent to Revelstoke Golf Course | √ (M) | S (L) | - | √ (L) | - | - | Critical |
| Big Eddy | - | ? | - | √ (L) | - | √ (M) | Critical |
| Salmon Rocks | - | ? | - | √ (L) | - | √ (M) | Critical |
| Beaton Reach | - | - | √ (M) | √ (H) | √ (H) | - | Critical |
| Narrow Burton Reach | - | - | S (L) | √ (M) | - | - | Critical |
| Location (see Figure 28 for basin overview) |
Spawn | Yolk Sac larvae and feeding larvae | Early juvenile | Late juvenile and adult | Over wintering | Staging | Overall assessment |
|---|---|---|---|---|---|---|---|
| Robson Reach | √ (H) | ?(H) | √ (H) | √ (H) | √ (H) | √ (M) | Critical |
| Kootenay Eddy | - | - | √ (M) | √ (H) | √ (M) | √ (L-M) | Critical |
| Fort Shepherd Eddy | - | - | √ (H) | √ (H) | √ (H) | √ (H) | Critical |
| Waneta Eddy | - | S(L) | √ (H) | √ (H) | √ (H) | √ (H) | Critical |
| Pend d’Oreille – Columbia Confluence | √ (H) | √ (H) | √ (L) | √ (M) | - | √ (H) | Critical |
| Bridge Hole | - | - | S (L) | √ (M) | √ (M) | - | Critical |
| Brilliant Tailrace | - | - | S (L) | √ (M) | √ (L) | - | Critical |
8.5.1 Biophysical functions, features and attributes of critical habitat – Upper Columbia River population
Tables 14 and 15 summarize the critical habitat function(s), features and attributes, to the extent possible, for the Upper Columbia River population of white sturgeon.
| Geographic location | Life stage | Function | Feature(s) | Attribute(s) | Notes |
|---|---|---|---|---|---|
| Columbia River adjacent to Revelstoke Golf Course | Yolk Sac Larvae | Rearing | Hiding locations in the vicinity of spawning habitat |
|
Yolk sac larvae have been captured in the area. Feeding larvae have not been collected at this location, likely downstream. This is the only confirmed spawning area for white sturgeon in the mid- Columbia River between REV Dam and HLK Dam. Spawning has been detected in ~70% of years at this location since 1999 with at least 2 spawning events estimated in those years when spawning has been documented. Based on the locations of captured eggs, low flows during years with low summer ALR levels could harm incubating eggs at night on bars downstream of the spawning area. Monitoring is ongoing and observations of egg dewatering have occurred once in the 8 years that spawning has been detected. This was prior to implementation of the REV minimum flow which has increased wetted area by 37% and may reduce risk to eggs in this area. In years with high ALR summer levels, incubating eggs would be within backwater effect of the reservoir and may be more vulnerable to predation. Rearing areas are used beginning in mid-August. Staging areas are used from June to August. Spawning and incubation areas are used from Mid-July – early September. |
| Adult | Staging | Hydraulic conditions particular to this location, see attributes |
|
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| Spawning and Incubation | Hydraulic conditions particular to this location, see attributes |
|
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| Big Eddy and Salmon Rocks | Adult | Feeding | Food availability often associated with:
|
|
Larvae use of this area is unknown. There is currently no identified use of this area by juveniles. This location represents areas selected by pre- spawning females (and possibly pre-spawning males). Feeding areas are used primarily in summer. Staging areas are used from June to August. |
| Staging | Holding areas near spawning habitat |
|
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| Beaton Reach | Late Juvenile and Adult | Feeding | Food availability often associated with: Depositional Areaa |
|
There is a suggestion that an upstream feeding movement by some adults occurs in spring and early summer as the reservoir fills. Individuals (primarily juveniles) tend to select the reservoir-river interface area. Summer temperatures as high as 13ºC in the main area of use for juveniles. Telemetry data from a study of early juveniles suggests use of river thalweg habitat with no indication of shallow water habitat use, monitoring is ongoing. Reservoir elevations may have influenced winter flows and water temperatures since regulation of the river. It is not known whether this has increased or decreased the suitability of overwintering habitats. Feeding areas are used all year. Overwintering areas are used from November to March |
| Overwintering | Depositional Areaa |
|
|||
| Narrow Burton Reach | Early and Late Juvenile | Potential Rearing (suitable for rearing and necessary for recovery) |
Feature(s) not confirmed |
|
Juvenile use is only suspected within this area, but may increase as hatchery juveniles continue to be released upstream. Rearing areas are used all year. Feeding areas are used all year. |
| Adult | Feeding | Food availability often associated with: Depositional Areaa Confluence with tributary that provides spawning habitat for salmonids in spring and fall |
|
a. Depositional area– typically lower velocity areas where fish can rest and prey species may congregate; often in close proximity to confluences with other water bodies providing further access to food sources.
| Geographic location | Life stage | Function | Feature(s) | Attribute(s) | Notes |
|---|---|---|---|---|---|
Pend d’Oreille – Columbia Confluence to US Border Waneta Eddy |
Yolk Sac Larvae | Rearing | Hiding locations in the vicinity of spawning habitat |
|
This is an important confirmed spawning area for white sturgeon in the Columbia River between HLK Dam and the US border. Spawning has been detected at this location since monitoring began in 1993 with an estimated minimum of 3 to 12 spawning events per year. Spawning has occurred over a wide variety of flow conditions (no correlation with flow). Majority of feeding larvae habitat downstream in the US. Hydraulic conditions in the Waneta Eddy / Pend d’Oreille confluence area show complex responses to flow and can vary dramatically depending on the combined effects of flow in the Columbia and Pend d’Oreille Rivers. Hydraulic modelling indicates that the majority of egg incubation area is located upstream of the border and within the influence of both the Pend d'Oreille and Columbia rivers. Suitable flow conditions for egg survival to hatching are present in most years throughout the majority of the spawning period. Rearing areas are used from mid-June to mid-August. Feeding areas are used all year. Staging areas are used November to July. Spawning and incubation areas are used from June to early August. |
| Feeding Larvae | Rearing Feeding |
Fluvial habitat downstream of spawning sites And food availability often associated with the above. |
|
||
| Early Juvenile | Rearing Feeding |
Hydraulic conditions particular to this location utilized, see attributes And food availability often associated with the above. |
|
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| Late Juvenile and Adult | Feeding | Hydraulic conditions particular to this location utilized by adults, see attributes |
|
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| Adult | Staging | Hydraulic conditions particular to this location utilized by adults, see attributes |
|
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| Spawning and Incubation | Hydraulic conditions particular to this location utilized by adults, see attributes |
|
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Kootenay Eddy Fort Shepherd Eddy |
Early Juvenile | Rearing Feeding |
Hydraulic conditions particular to this location, see attributes And food availability often associated with the above. |
|
Rearing areas are used from mid-June to mid-August. Feeding areas are used all year. Staging areas are used November to July. Overwintering areas are used from November to March. |
| Late Juvenile and Adult | Feeding | Food availability often associated with: Depositional Areaa |
|
||
| Overwintering | Deep pools |
|
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| Adult | Staging | Hydraulic conditions particular to this location, see attributes |
|
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| Robson Reach | Yolk Sac Larvae | Rearing | Hiding locations in the vicinity of spawning habitat |
|
Spawning has recently been detected in the vicinity of ALGS. Monitoring is ongoing to further describe spawning frequency and duration at this location and to characterize substrates. Entrained mysids are an important food source in Robson Reach, though a non-native species. Rearing areas are used from did June to mid-August. Feeding areas are used all year. Staging areas are used November to July. Overwintering areas are used from November to March. |
| Feeding Larvae | Rearing Feeding |
Fluvial habitat downstream of spawning sites And food availability often associated with the above. |
|
||
| Early Juvenile | Rearing Feeding |
Hydraulic conditions particular to this location, see attributes And food availability often associated with the above. |
|
||
| Late Juvenile and Adult | Feeding | Food availability often associated with: Depositional Areaa |
|
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| Overwintering | Deep pools |
|
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| Adult | Staging | Hydraulic conditions particular to this location, see attributes |
|
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| Spawning and Incubation | Hydraulic conditions particular to this location see attributes |
|
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Bridge Hole Brilliant Tailrace |
Late Juvenile and Adult | Feeding | Hydraulic conditions particular to this location that provide food, see attributes |
|
Area is used both by fish that reside primarily within Robson Reach, and fish that preferentially reside within the lower Kootenay River, though use of the area is likely more important for the latter group. Minimal use of the plunge pool / tailrace area during periods of spill is acknowledged Feeding areas are used all year. Low overwintering use from November to March. |
| Overwintering |
a. Depositional area– typically lower velocity areas where fish can rest and prey species may congregate; often in close proximity to confluences with other water bodies providing further access to food sources.
8.5.2 Geographic identification of critical habitat – Upper Columbia River population
The following locations of the critical habitat’s functions, features and attributes have been identified using the critical habitat parcel approach. Critical habitat downstream of existing hydroelectric facilities does not include the physical structure of the dam, although it may include anthropogenic features such as rip rap downstream of the facilities.
Long description
Figure 28. This is a map of the Upper Columbia River showing an overview of critical habitat locations. Critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. Nine locations in the vicinity of Revelstoke, Castlegar and Trail are labelled on a map of British Columbia as follows: Columbia River adjacent to Revelstoke Golf Course, Salmon Rocks/Big Eddy, Beaton Reach, Narrow Burton Reach, Robson Reach, Bridge Hole, Brilliant Tailrace, Kootenay Eddy, Ft. Shepherd Eddy, Waneta Eddy/Pend d’Oreille River Confluence. A scale and legend are provided along with an inset map showing locations are primarily in the south-eastern corner of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 29. Figure 29 is a map of a section of Arrow Lakes Reservoir, British Columbia, showing the critical habitat locations of Big Eddy, Salmon Rocks, and the Columbia River adjacent to Revelstoke Golf Course. The map depicts three polygons that have been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygons, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygons’ boundaries are listed in Table 16. The critical habitat polygons in the Big Eddy, Salmon Rocks, and the Columbia River adjacent to Revelstoke Golf Course map are also labeled with codes that correspond to codes used to identify the polygons in Table 16. A scale of 1:29,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 30. Figure 30 is a map of a section of Arrow Lakes Reservoir, British Columbia, showing the critical habitat location Beaton Reach. The map depicts a polygon that has been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 16. The critical habitat polygon in the Beaton Reach map is also labeled with codes that correspond to codes used to identify the polygon in Table 16. A scale of 1:73,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 31. Figure 31 is a map of a section of Arrow Lakes Reservoir, British Columbia, showing the critical habitat location Narrow Burton Reach. The map depicts a polygon that has been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 16. The critical habitat polygon in the Narrow Burton Reach map is also labeled with codes that correspond to codes used to identify the polygon in Table 16. A scale of 1:73,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 32. Figure 32 is a map of a section of the Columbia River, British Columbia, showing the critical habitat location Robson Reach. The map depicts a polygon that has been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 16. The critical habitat polygon in the Robson Reach map is also labeled with codes that correspond to codes used to identify the polygon in Table 16. A scale of 1:55,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 33. Figure 33 is a map of a section of the Lower Kootenay River, British Columbia, showing the critical habitat locations of Kootenay Eddy, Bridge Hole and Brilliant Tailrace. The map depicts three polygons that have been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygons, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygons’ boundaries are listed in Table 16. The critical habitat polygons in the Kootenay Eddy, Bridge Hole and Brilliant Tailrace map are also labeled with codes that correspond to codes used to identify the polygons in Table 16. A scale of 1:16,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 34. Figure 34 is a map of a section of the Columbia River, British Columbia, showing the critical habitat location Fort Shepherd Eddy. The map depicts a polygon that has been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygon, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygon’s boundary are listed in Table 16. The critical habitat polygon in the Fort Shepherd Eddy map is also labeled with codes that correspond to codes used to identify the polygon in Table 16. A scale of 1:7,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region of British Columbia. The map is oriented in a “north is up” direction.
Long description
Figure 35. Figure 35 is a map of a section of the Columbia River, British Columbia, showing the critical habitat locations Waneta Eddy and the Pend d’Oreille confluence with the Columbia River. The map depicts two polygons that have been identified as critical habitat for Upper Columbia River white sturgeon. In the identified polygons, critical habitat includes aquatic habitat features and attributes that Upper Columbia River white sturgeon use to carry out life functions. The coordinates denoting various points of the polygons’ boundaries are listed in Table 16. The critical habitat polygons in the Waneta Eddy and Pend d’Oreille confluence with the Columbia River map are also labeled with codes that correspond to codes used to identify the polygons in Table 16. A scale of 1:9,000 and legend are provided along with an inset map showing locations are primarily in the Kootenay region 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) |
|---|---|---|---|---|---|---|---|
| Columbia - Bridge Hole | Cr-BH1 | Lower Kootenay River | - | 49.318 | -117.628 | 49° 19' 4" N | 117° 37' 42" W |
| Columbia - Bridge Hole | Cr-BH2 | Lower Kootenay River | - | 49.318 | -117.628 | 49° 19' 4" N | 117° 37' 41" W |
| Columbia - Bridge Hole | Cr-BH3 | Lower Kootenay River | - | 49.318 | -117.629 | 49° 19' 3" N | 117° 37' 43" W |
| Columbia - Bridge Hole | Cr-BH4 | Lower Kootenay River | - | 49.317 | -117.629 | 49° 19' 2" N | 117° 37' 44" W |
| Columbia - Bridge Hole | Cr-BH5 | Lower Kootenay River | - | 49.317 | -117.630 | 49° 19' 0" N | 117° 37' 48" W |
| Columbia - Bridge Hole | Cr-BH6 | Lower Kootenay River | - | 49.317 | -117.630 | 49° 19' 2" N | 117° 37' 49" W |
| Columbia - Bridge Hole | Cr-BH7 | Lower Kootenay River | - | 49.317 | -117.630 | 49° 19' 2" N | 117° 37' 47" W |
| Columbia - Bridge Hole | Cr-BH8 | Lower Kootenay River | - | 49.317 | -117.630 | 49° 19' 2" N | 117° 37' 46" W |
| Columbia - Bridge Hole | Cr-BH9 | Lower Kootenay River | - | 49.318 | -117.629 | 49° 19' 4" N | 117° 37' 44" W |
| Columbia - Brilliant Tailrace | Cr-BTR1 | Lower Kootenay River | - | 49.324 | -117.621 | 49° 19' 26" N | 117° 37' 17" W |
| Columbia - Brilliant Tailrace | Cr-BTR2 | Lower Kootenay River | - | 49.324 | -117.620 | 49° 19' 28" N | 117° 37' 12" W |
| Columbia - Brilliant Tailrace | Cr-BTR3 | Lower Kootenay River | - | 49.324 | -117.619 | 49° 19' 27" N | 117° 37' 10" W |
| Columbia - Brilliant Tailrace | Cr-BTR4 | Lower Kootenay River | - | 49.324 | -117.619 | 49° 19' 26" N | 117° 37' 9" W |
| Columbia - Brilliant Tailrace | Cr-BTR5 | Lower Kootenay River | - | 49.323 | -117.620 | 49° 19' 24" N | 117° 37' 11" W |
| Columbia - Brilliant Tailrace | Cr-BTR6 | Lower Kootenay River | - | 49.323 | -117.620 | 49° 19' 22" N | 117° 37' 13" W |
| Columbia - Brilliant Tailrace | Cr-BTR7 | Lower Kootenay River | - | 49.322 | -117.623 | 49° 19' 17" N | 117° 37' 23" W |
| Columbia - Brilliant Tailrace | Cr-BTR8 | Lower Kootenay River | - | 49.323 | -117.622 | 49° 19' 24" N | 117° 37' 18" W |
| Columbia - Brilliant Tailrace | Cr-BTR9 | Lower Kootenay River | - | 49.323 | -117.621 | 49° 19' 23" N | 117° 37' 14" W |
| Columbia - Brilliant Tailrace | Cr-BTR10 | Lower Kootenay River | - | 49.321 | -117.622 | 49° 19' 16" N | 117° 37' 19" W |
| Columbia - Fort Shepherd Eddy | Cr-FSE1 | Columbia River | - | 49.028 | -117.603 | 49° 1' 40" N | 117° 36' 11" W |
| Columbia - Fort Shepherd Eddy | Cr-FSE2 | Columbia River | - | 49.027 | -117.606 | 49° 1' 35" N | 117° 36' 22" W |
| Columbia - Fort Shepherd Eddy | Cr-FSE3 | Columbia River | - | 49.032 | -117.615 | 49° 1' 55" N | 117° 36' 53" W |
| Columbia - Fort Shepherd Eddy | Cr-FSE4 | Columbia River | - | 49.033 | -117.613 | 49° 2' 0" N | 117° 36' 45" W |
| Columbia - Kootenay Eddy | Cr-KE1 | Lower Kootenay River | - | 49.316 | -117.648 | 49° 18' 58" N | 117° 38' 52" W |
| Columbia - Kootenay Eddy | Cr-KE2 | Lower Kootenay River | - | 49.314 | -117.649 | 49° 18' 52" N | 117° 38' 58" W |
| Columbia - Kootenay Eddy | Cr-KE3 | Lower Kootenay River | - | 49.314 | -117.653 | 49° 18' 52" N | 117° 39' 11" W |
| Columbia - Kootenay Eddy | Cr-KE4 | Lower Kootenay River | - | 49.317 | -117.652 | 49° 19' 0" N | 117° 39' 7" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC1 | Pend d'Oreille River | - | 49.005 | -117.619 | 49° 0' 17" N | 117° 37' 7" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC2 | Pend d'Oreille River | - | 49.003 | -117.619 | 49° 0' 12" N | 117° 37' 7" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC3 | Columbia River | - | 49.001 | -117.630 | 49° 0' 3" N | 117° 37' 46" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC4 | Columbia River | - | 49.001 | -117.633 | 49° 0' 3" N | 117° 38' 0" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC5 | Columbia River | - | 49.002 | -117.631 | 49° 0' 7" N | 117° 37' 52" W |
| Columbia - Pend d'Oreille Confluence | Cr- POC6 | Columbia River | - | 49.003 | -117.630 | 49° 0' 11" N | 117° 37' 46" W |
| Columbia - Pend d'Oreille Confluence | Cr-POC7 | Columbia River | - | 49.004 | -117.627 | 49° 0' 13" N | 117° 37' 36" W |
| Columbia - Robson Reach | Cr-RR1 | Columbia River | - | 49.332 | -117.665 | 49° 19' 56" N | 117° 39' 55" W |
| Columbia - Robson Reach | Cr-RR2 | Columbia River | - | 49.330 | -117.670 | 49° 19' 48" N | 117° 40' 12" W |
| Columbia - Robson Reach | Cr-RR3 | Columbia River | - | 49.338 | -117.770 | 49° 20' 16" N | 117° 46' 12" W |
| Columbia - Robson Reach | Cr-RR4 | Columbia River | - | 49.341 | -117.772 | 49° 20' 28" N | 117° 46' 19" W |
| Columbia - Waneta Eddy | Cr-WE1 | Columbia River | - | 49.006 | -117.622 | 49° 0' 23" N | 117° 37' 19" W |
| Columbia - Waneta Eddy | Cr-WE2 | Columbia River | - | 49.007 | -117.620 | 49° 0' 24" N | 117° 37' 13" W |
| Columbia - Waneta Eddy | Cr-WE3 | Columbia River | - | 49.007 | -117.618 | 49° 0' 26" N | 117° 37' 6" W |
| Columbia - Waneta Eddy | Cr- WE4 | Columbia River | - | 49.008 | -117.616 | 49° 0' 28" N | 117° 36' 58" W |
| Columbia - Waneta Eddy | Cr- WE5 | Columbia River | - | 49.005 | -117.619 | 49° 0' 17" N | 117° 37' 7" W |
| Columbia - Waneta Eddy | Cr- WE6 | Columbia River | - | 49.004 | -117.625 | 49° 0' 15" N | 117° 37' 28" W |
| Columbia (ALR) - Beaton Reach | Cr-BR1 | Upper Arrow Lake | 188.0 | 50.698 | -117.984 | 50° 41' 53" N | 117° 59' 1" W |
| Columbia (ALR) - Beaton Reach | Cr-BR2 | Upper Arrow Lake | 188.0 | 50.706 | -117.948 | 50° 42' 23" N | 117° 56' 51" W |
| Columbia (ALR) - Beaton Reach | Cr-BR3 | Upper Arrow Lake | 6.5 | 50.703 | -117.848 | 50° 42' 11" N | 117° 50' 53" W |
| Columbia (ALR) - Beaton Reach | Cr-BR4 | Upper Arrow Lake | 6.5 | 50.691 | -117.838 | 50° 41' 29" N | 117° 50' 17" W |
| Columbia (ALR) - Beaton Reach | Cr-BR5 | Upper Arrow Lake | 180.0 | 50.652 | -117.876 | 50° 39' 7" N | 117° 52' 33" W |
| Columbia (ALR) - Beaton Reach | Cr-BR6 | Upper Arrow Lake | 180.0 | 50.634 | -117.921 | 50° 38' 3" N | 117° 55' 14" W |
| Columbia (ALR) - Big Eddy | Cr-BE1 | Columbia River | - | 51.006 | -118.239 | 51° 0' 20" N | 118° 14' 22" W |
| Columbia (ALR) - Big Eddy | Cr-BE2 | Columbia River | - | 51.005 | -118.235 | 51° 0' 19" N | 118° 14' 7" W |
| Columbia (ALR) - Big Eddy | Cr-BE3 | Columbia River | - | 51.002 | -118.235 | 51° 0' 9" N | 118° 14' 7" W |
| Columbia (ALR) - Columbia River adjacent to Revelstoke Golf Course | Cr-RGC1 | Columbia River | 232.8 | 51.017 | -118.226 | 51° 1' 1" N | 118° 13' 33" W |
| Columbia (ALR) - Columbia River adjacent to Revelstoke Golf Course | Cr-RGC2 | Columbia River | 232.8 | 51.016 | -118.224 | 51° 0' 57" N | 118° 13' 25" W |
| Columbia (ALR) - Columbia River adjacent to Revelstoke Golf Course | Cr-RGC3 | Columbia River | 231.6 | 51.009 | -118.236 | 51° 0' 33" N | 118° 14' 9" W |
| Columbia (ALR) - Columbia River adjacent to Revelstoke Golf Course | Cr-RGC4 | Columbia River | 231.6 | 51.009 | -118.239 | 51° 0' 34" N | 118° 14' 21" W |
| Columbia (ALR) - Narrow Burton Reach | Cr-NBR1 | Columbia River | 99.0 | 50.001 | -117.910 | 50° 0' 5" N | 117° 54' 36" W |
| Columbia (ALR) - Narrow Burton Reach | Cr-NBR2 | Columbia River | 99.0 | 50.000 | -117.888 | 50° 0' 2" N | 117° 53' 15" W |
| Columbia (ALR) - Narrow Burton Reach | Cr-NBR3 | Lower Arrow Lake | 95.5 | 49.970 | -117.904 | 49° 58' 11" N | 117° 54' 14" W |
| Columbia (ALR) - Narrow Burton Reach | Cr-NBR4 | Lower Arrow Lake | 95.5 | 49.978 | -117.931 | 49° 58' 41" N | 117° 55' 52" W |
| Columbia (ALR) - Salmon Rocks | Cr-SR1 | Upper Arrow Lake | 226.8 | 50.983 | -118.214 | 50° 58' 58" N | 118° 12' 52" W |
| Columbia (ALR) - Salmon Rocks | Cr-SR2 | Upper Arrow Lake | 226.8 | 50.983 | -118.212 | 50° 58' 58" N | 118° 12' 42" W |
| Columbia (ALR) - Salmon Rocks | Cr-SR3 | Upper Arrow Lake | 226.1 | 50.975 | -118.209 | 50° 58' 32" N | 118° 12' 32" W |
| Columbia (ALR) - Salmon Rocks | Cr-SR4 | Upper Arrow Lake | 226.1 | 50.975 | -118.211 | 50° 58' 31" N | 118° 12' 41" 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 Canadian portion of the Columbia River, river kilometres start at Hugh L. Keenleyside Dam (HLK) Dam in Castlegar and increase moving downstream to the Canada/U.S. border (HLK = 0 km, Canada/U.S. border ~ 57.0 km). River kilometres also increase on the upstream side of HLK Dam, starting at 0 km at the dam and increasing to the headwaters of the Columbia River.
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