Rascal-Goose and Main Goose Pit Stream Reaches and Survey...

PROJECT #0234411-0005 GIS # BAC-06-180a March 16 2014

Rascal-Goose and Main Goose Pit Stream Reaches and Survey Sites, 2013

Figure 3.3-1

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Projection: NAD 1983 UTM Zone 13N

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å Fish Habitat AssessmentProcedures Site

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Haul and Access Road

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Proposed Airstrip

Waste Rock Storage Area

RESULTS AND DISCUSSION

SABINA GOLD & SILVER CORP. 3-21

Table 3.3-2. Weighted Mean Habitat Characteristics of Rascal-Goose Stream Reaches, 2013

Rascal-Goose Stream

Attribute Units Reach 1 Reach 2 Reach 3 Reach 4 Reach 5 Reach 6 Reach 7

Site number n/a 300 301 302 305 306 307 308

Organics % 5 98 0 0 0 4 0

Fine % 0 0 0 0 60 0 0

Gravel % 30 2 0 10 10 0 0

Cobble % 40 0 75 60 20 3 20

Boulder % 25 0 25 30 10 82 80

Bedrock % 0 0 0 0 0 11 0

Compaction n/a Medium Medium Low Medium Medium High Medium

Bank Stability n/a Unstable Unstable Unstable Unstable Unstable Stable Unstable

Bank Substrate n/a Fines Fines Fines Fines Fines Boulder Fines

Pool % 2 0 0 0 0 3 0

Boulder % 0 3 2 2 1 7 20

Instream Vegetation % 2 0 1 1 1 0 0

Overhead Vegetation % 0 0 0 0 0 0 0

Undercut Bank % 1 2 3 0 0 0 0

Total Cover % 5 5 6 2 2 9 20

Number of Pools no. 0 0 0 0 0 1 0

Mean Maximum Pool Depth m - - - - - 1.0 -

Mean Crest Depth m - - - - - 0.3 -

Residual Pool Depth m - - - - - 0.7 -

Riffle no. 0 0 1 1 0 1 0

Pool no. 0 0 0 0 0 1 0

Run no. 1 1 0 0 1 1 0

Cascade no. 0 0 0 0 0 0 0

Boulder Garden no. 0 0 0 0 0 0 1

Other no. 0 0 0 0 0 0 0

n/a = not applicable

Dashes indicate data not available

No. = number

At the time of the survey, the wetted width at Reach 2 was wider than the bankfull width by 2 m, creating

off-channel habitat in flooded areas beyond the stream banks (Plate 3.3-2). The channel is wide (18.0 m

bankfull width) and low gradient. Fine organic sediments are the primary substrate type. Fine substrates

are deleterious to fish species that lay eggs on the stream bed as fine sediments can smother fish eggs.

As a result of the substrate composition, no suitable spawning habitat was identified at Reach 2. Rearing

habitat in Reach 2 is of fair quality, and overall the reach is identified as important fish habitat.

A large temporarily flooded area was observed to the west of Reach 2, running roughly parallel to the

stream reach. The wetted area is comprised of ponded overland flow that drains from the west and

discharges into Reach 1 (Plate 3.3-3). While likely ephemeral as evidenced by the presence of rooted

terrestrial vegetation throughout the wetted area, small unidentified fish were observed within the

3,422 m2 wetted area, suggesting that it provides seasonal fish habitat.

2013 FRESHWATER FISH AND FISH HABITAT BASELINE REPORT

3-22 RESCAN ENVIRONMENTAL SERVICES LTD., AN ERM COMPANY | PROJ#0194096-0004 | REV A.1 | MARCH 2014

Plate 3.3-2. Off-channel habitat was present in wetted areas outside the

bankfull width at Reach 2 of Rascal-Goose Stream, June 16, 2013.

Plate 3.3-3. Ephemeral fish habitat at a flooded area west of Reach 2 of

Rascal-Goose Stream, June 16, 2013.



Reach 3 is comprised entirely of riffle habitat with limited braiding (Plate 3.3-4). Boulder and cobble

substrates dominate within the shallow (0.2 m bankfull depth) channel. Substrate compaction is low

and there is a moderate amount of instream cover provided by boulders and undercut banks, providing

fair habitat for rearing fish. Overall, the reach is important fish habitat.

Plate 3.3-4. Upstream view of riffle habitat at Reach 3 of Rascal-Goose

Stream, June 16, 2013.

Reach 4 is differentiated from Reach 3 by greater width (bankfull width = 3.7 m) and the presence of

multiple braided channels (Plate 3.3-5). Reach 4 is the longest reach in the Rascal-Goose Stream

(806 m) and comprises 22% of the stream’s total length. As with Reach 3, Reach 4 is composed entirely

of riffle habitat with cobble as the primary substrate type. Reach 4 contains pockets of gravel that

provide fair spawning habitat and contains some instream cover from boulders that provides fair

rearing habitat. The reach is characterized as important fish habitat overall.

Reach 5 encompasses the inflow and outflow of a small unnamed pond downstream of Rascal Lake.

The low gradient in Reach 5 (0% slope) results in a greater retention of fines within the channel

(Plate 3.3-6). Reach 5 contains little instream cover for rearing fish (poor rearing habitat) and the

presence of 60% fines in the substrate results in a lack of suitable fish spawning habitat. Overall, the

reach provides marginal quality fish habitat, although the pond may provide higher quality rearing

habitat due to the cover provided by the deeper water.

Reach 6 is the outflow of Rascal Lake. Reach 6 is relatively heterogeneous compared to other reaches,

as it contains riffle, pool, and run habitat (Plate 3.3-7). Boulders are the primary substrate type and it

is the only reach of Rascal-Goose Stream to contain bedrock. The single pool in Reach 6 is deep, with a

residual pool depth of 0.7 m and may provide higher quality rearing habitat. Otherwise, the quality of

the rearing habitat is characterized as fair due to the high channel gradient (4%), and the large

substrate size results in the absence of any observed spawning habitat. The reach is characterized as

important fish habitat overall.



Plate 3.3-5. Braiding at Reach 4 of Rascal-Goose Stream, June 16, 2013.

Plate 3.3-6. Low gradient channel at Reach 5 of Rascal-Goose Stream,

June 16, 2013.



Plate 3.3-7. Riffle and pool habitat at Reach 6 of Rascal-Goose Stream,

June 16, 2013.

While the majority of water from Reach 6 discharges north-east into Reach 5, some discharges north-

west into Reach 7, instead. Reach 7 runs approximately parallel to and west of Reach 5. Reach 7 is

comprised of boulder garden habitat with open water (Plate 3.3-8). The channel is wide (17.0 m

bankfull width) but shallow (0.19 bankfull depth). The reach may become seasonally impassable to fish

during low flow periods due to the abundance of large, closely packed boulders. Rearing habitat in

Reach 7 is of good quality, and the reach is considered important overall fish habitat.

Plate 3.3-8. Boulder-dominated substrate at Reach 7 of Rascal-Goose Stream,

June 16, 2013.



Main Pit Streams

There are seven reaches that form the Main Pit streams, which are an assortment of tributaries that

flow into the Rascal-Goose stream or Goose Lake within the main pit area (Figure 3.3-1). The seven

reaches are not consecutive reaches of a single stream, but rather several streams in close proximity

with similar habitat characteristics which will be grouped together for the purposes of this report.

Reach 1 of the Main Pit streams is a side channel to Rascal-Goose Stream. It collects overland flow from

west of Rascal-Goose stream and flows north to discharge into Reach 3 of Rascal-Goose Stream. It is

intermittently channelized, and in between channelized sections the water flows over land through

rooted vegetation and grasses (Plate 3.3-9). Where a channel is present it is very narrow (bankfull

width = 0.1 m) and shallow (bankfull depth = 0.04; Table 3.3-3). Instream vegetation covers 70% of the

bankfull area and the substrate is comprised entirely of organic fines (Table 3.3-4). Although there is

abundant instream vegetation, poor connectivity of the channel results in poor rearing habitat, and the

presence of 100% organics in the substrate results in a lack of suitable fish spawning habitat. Overall,

the reach provides marginal quality fish habitat.

Plate 3.3-9. Intermittent channelization at

Reach 1 of the Main Pit streams, June 16, 2013.

Reach 2 of the Main Pit streams discharges into Reach 3 of Rascal-Goose stream from the west.

The morphology is composed entirely of riffle habitat with no secondary habitat present. Cobble

substrates are dominant and the moderately abundant instream cover is primarily provided by boulders

(Plate 3.3-10). It provides good quality rearing and spawning habitat from the abundant cover and

major presence of cobble substrate. Given the limited quantity of good spawning habitat in the Goose

Lake watershed, the presence and accessibility of such habitat results in the categorization of Reach 2

as critical fish habitat.



Table 3.3-3. Characteristics of Main Pit Streams Reaches, 2013

Goose Pit Streams

Attribute Units 1 2 3 4 5 6 7

Site n/a - 303 304 500 501 502 503

Morphology n/a Side channel Riffle Run Run Run Run Run

Secondary Habitat n/a Int. - Braided OCH Braided OCH Braided

Reach Length m 163.4 466.6 223.9 249.9 363.9 250.0 494.5

Mean Gradient % 0.0 1.0 2.0 1.0 1.5 1.5 0.5

Mean Bankfull Width m 0.1 2.5 5.0 2.0 2.3 0.7 0.2

Mean Wetted Width m 0.2 2.5 5.0 3.5 3.7 2.1 0.6

Mean Bankfull Depth m 0.04 0.20 0.31 1.10 0.10 0.08 0.10

Mean Wetted Depth m 0.07 0.22 0.30 0.70 0.12 0.13 0.70

Bankfull area m2 16 1,166 1,119 499 836 175 74

Spawning n/a None Good Fair Poor Good None None

Overwintering n/a None None None None None None None

Rearing n/a Poor Good Good Good Good Poor Poor

Overall n/a Marginal Critical Important Important Critical Marginal Marginal

Braided = braided channel morphology

Int. = intermittent channelization

OCH = off-channel habitat



Table 3.3-4. Weighted Mean Habitat Characteristics of Main Pit Streams Reaches, 2013

Goose Pit Streams


Site n/a - 303 304 500 501 502 503

Organics % 100 0 0 80 23 0 75

Fine % 0 0 15 0 0 90 0

Gravel % 0 0 0 10 42 5 0

Cobble % 0 80 29 10 21 5 25

Boulder % 0 20 26 0 14 0 0

Bedrock % 0 0 0 0 0 0 0

Compaction n/a High Medium Medium High High High High

Bank Stability n/a Unstable Unstable Unstable Stable Unstable Unstable Unstable

Bank Substrate n/a Fines Fines Fines Fines Fines Fines Fines

Number of Pools no. 0 0 0 0 0 0 0

Mean Maximum Pool Depth m - - - - - - -

Mean Crest Depth m - - - - - - -

Mean Residual Depth m - - - - - - -

Pool % 0 0 0 2 2 0 0

Boulder % 0 8 3 0 0 0 0


(continued)



Table 3.3-4. Weighted Mean Habitat Characteristics of Main Pit Streams Reaches, 2013 (completed)

Goose Pit Streams


Overhanging Vegetation % 0 0 0 0 0 10 0


Total Cover % 70 10 8 10 8 50 35

Riffle no. 0 1 1 0 1 1 0

Pool no. 10 0 0 0 0 0 0

Run no. 90 0 2 1 2 0 1

Cascade no. 0 0 0 0 0 0 0


Other no. 0 0 0 0 0 0 0



No. = number

Plate 3.3-10. Instream boulders provide cover at Reach 2 of the Main Pit

streams, June 16, 2013.

Reach 3 of the Main Pit streams is an outflow from an unnamed pond west of Rascal-Goose Stream and

discharges into Reach 2 of the Main Pit streams and into Reach 3 of Rascal-Goose Stream. It contains

riffle and run habitat units. It is larger than the other Main Pit streams (bankfull width = 5.0 m). It is

important fish habitat, as it provides good rearing habitat and fair quality spawning habitat. A boulder

garden creates a possible fish barrier at the upstream end of the reach (Plate 3.3-11).



Plate 3.3-11. A boulder garden at the upstream end of Reach 3 of the Main Pit

streams forms a potential barrier to fish passage, June 16, 2013.

Reach 4 is located east of the Rascal-Goose stream. It discharges into a narrow embayment of Goose

Lake. Reach 4 is a moderate gradient run. The bankfull width and depth are highly variable

(Plate 3.3-12). At the time of the survey it had flooded beyond the 1.5 m bankfull width and as a result

there was abundant off-channel habitat. The substrate is primarily fine organic matter with areas of

gravel and cobble. The reach has poor potential as spawning habitat due to the abundance of fine

sediments, but it contains good quality rearing habitat and is overall important fish habitat.

Plate 3.3-12. Variable stream widths and off-channel habitat at Reach 4 of the

Main Pit streams, June 18, 2013.



Upstream of Reach 4 there is a large (18,800 m2) pond. At the time of the survey the pond was very

shallow (maximum depth = 0.6 m) but satellite imagery and the presence of saturated, unvegetated

fluvial sediments beyond the shoreline suggests that the pond size and depth may be greater at other

times (Plate 3.3-13).

Plate 3.3-13. Saturated fluvial sediments on the shoreline suggest that the

pond upstream of Main Pit Goose Stream Reach 4 may at times cover a greater

area, June 18, 2013.

Reach 5 is located upstream of the pond, to the east of Goose-Rascal stream. The stream channel of

Reach 5 is wide (bankfull width = 2.3 m), shallow (bankfull depth = 0.10 m) and braided. Both riffle and run

units are present. Reach 5 contains moderate amounts of gravel substrate and instream cover, creating

good spawning and rearing habitat (Plate 3.3-14). With the limited areas of good spawning habitat, the

reach provides overall critical fish habitat.

Plate 3.3-14. Potential spawning gravels at Reach 5 of the Main Pit streams,

June 18, 2013.



Reach 6 is located upstream of Reach 5. It is primarily differentiated from Reach 6 by its narrower

width (bankfull width = 0.7 m) and the dominance of fine sediments in the substrate. The wetted width

in this reach was greater than the bankfull width at the time of the survey, resulting in the formation

of off-channel habitat where the surface water flowed through the surrounding grasses (Plate 3.3-15).

Although there is abundant instream vegetation in the form of overhanging vegetation, poor

connectivity of the channel results in poor rearing habitat. No spawning habitat was identified within

the reach, and the overall habitat quality is marginal.

Plate 3.3-15. Off-channel habitat and intermittent channel at Reach 6 of the

Main Pit streams, June 18, 2013.

Reach 7 of the Main Pit streams connects a small pond east of Rascal-Goose Stream to Reach 2 of Rascal

Goose Stream. The channel is narrow (bankfull width = 0.2 m) and shallow (bankfull depth = 0.10 m),

although the wetted width and wetted depth were greater than bankfull widths and depths at the time

of the survey. The reach is braided with primarily fine sediment substrates and abundant cover in the

form of instream vegetation (Plate 3.3-16). Overall the fish habitat is marginal, as there is no identified

spawning habitat and the rearing habitat is poor due to the small size of the channel.

Umwelt Outflow

There are seven reaches that form the Umwelt Outflow, starting from the downstream end of Umwelt

Outflow where it discharges into Goose Lake and moving upstream towards Umwelt Lake (Figure 3.3-2).

Reach 1 of Umwelt Lake Outflow is directly upstream of Goose Lake. This reach is wide (bankfull

width = 35.0) and deep (bankfull depth = 1.5 m) with vertical bedrock walls (Table 3.3-5 and

Table 3.3-6). Habitat in the reach is provided by boulders, which are the dominant substrate

(Plate 3.3-17). Pockets of water greater than 2 m in depth may provide fair quality overwintering

habitat, while the abundant instream cover and low gradient provide good quality rearing habitat. The

habitat in Reach 1 is characterized as important fish habitat. A short cascade at the upstream end of

the reach is not likely a barrier to fish migration, but may impede the upstream migration of small fish.



Plate 3.3-16. Reach 7 of the Main Pit Streams was small with abundant

instream vegetation, June 18, 2013.

Plate 3.3-17. A view of Reach 1 of Umwelt Outflow from upstream,

June 15, 2013.

PROJECT # 0234411-0005 GIS # BAC-06-180b March 16, 2014

Umwelt Outflow Stream Reaches andSurvey Sites, 2013

Figure 3.3-2

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Table 3.3-5. Characteristics of Umwelt Outflow Stream Reaches, 2013

Umwelt Outflow


Site n/a 205 206 207 208 103, 104 209 -

Morphology n/a Run Cascade Riffle Run BG Run Run

Secondary Habitat n/a - - - - - Braided, OCH OCH

Reach Length m 156.3 177.25 284.3 582 - 471.6 79.2

Mean Gradient % 0.5 6.0 2.0 0.5 1.0 2.0 0.0

Mean Bankfull Width m 35.0 8.0 6.0 18.0 - 4.0 12.0

Mean Wetted Width m 35.0 6.0 4.0 15.0 - 12.1 15.0

Mean Bankfull Depth m 1.50 0.30 0.55 0.55 - 0.31 0.14

Mean Wetted Depth m 1.50 0.25 0.50 0.51 - 0.28 0.14

Bankfull area m2 5,471 1,418 1,706 10,476 8,905 1,886 950

Spawning n/a None Poor Poor None None Good Fair

Overwintering n/a Fair None None None None None None

Rearing n/a Good Poor Good Poor Fair Good Good

Overall n/a Important Marginal Important Marginal Important Important Important

BG = boulder garden





Table 3.3-6. Weighted Mean Habitat Characteristics of Umwelt Outflow Stream Reaches, 2013

Umwelt Outflow


Organics % 0 0 0 0 0 0 35

Fine % 0 0 0 0 0 2 35

Gravel % 0 4 4 0 0 3 20

Cobble % 10 11 34 0 10 60 10

Boulder % 70 37 59 39 80 35 0

Bedrock % 20 49 4 61 10 0 0

Compaction n/a Low Low Low Low Low Medium High

Bank Stability n/a Stable Stable Stable Stable Stable Unstable Stable

Bank Substrate n/a Bedrock Bedrock Boulder Bedrock Boulder Fines Fines

Number of Pools no. 0 0 0 2 - 0 0

Mean Maximum Pool Depth m - - - 0.68 - - -

Mean Crest Depth m - - - 0.21 - - -

Mean Residual Depth m - - - 0.47 - - -

Pool % 0 0 0 2 20 0 0

Boulder % 30 10 40 17 30 6 1


(continued)



Table 3.3-6. Weighted Mean Habitat Characteristics of Umwelt Outflow Stream Reaches, 2013

(completed)

Umwelt Outflow


Overhanging Vegetation % 0 0 0 0 0 2 3


Total Cover % 30 10 40 20 50 10 10

Riffle no. 0 1 1 0 0 0 0

Pool no. 0 0 0 2 0 0 0

Run no. 1 0 1 1 0 1 1

Cascade no. 0 1 0 0 0 0 0


Other no. 0 0 0 0 0 0 0



No. = number

Cascade and riffle habitat characterize the majority of Reach 2. The reach gradient is high (6% slope),

and the reach is of marginal habitat quality for fish due to the presence of a cascade barrier and thus

poor rearing and spawning habitat. Subsurface flow and boulder and bedrock substrate prevent the

formation of scour pools or other morphological features that could aid fish in the navigation of the

3.8 m high cascade, and as a result it forms a barrier to fish passage (Plate 3.3-18). An off-channel

wetted area south of Reach 2 is unconnected to the stream channel downstream of the cascade and

does not provide a route for fish passage.

Plate 3.3-18. Boulders and bedrock formations obscure the water where the

change in elevation marks the barrier to fish passage at Reach 2 of Umwelt

Outflow, June 15, 2013.



The habitat in Reach 3 is heterogeneous and includes riffle, run, and boulder garden habitat units

(Plate 3.3-19). Boulder and cobble are the dominate substrate types and boulders provide abundant

instream cover. The channel is relatively deep (bankfull depth = 0.55 m). Spawning habitat is of poor

quality due to the large substrate size. The abundance of instream cover and moderate gradient

provide good rearing habitat and overall important fish habitat.

Plate 3.3-19. Riffle and glide habitat at Reach 3 of Umwelt Outflow,

June 15, 2013.

Reach 4 is wide (bankfull width = 18.0 m), and provides fair rearing habitat and overall marginal fish

habitat. While boulder substrates provide instream cover, they may also impede fish movement through

shallow areas of the channel. The majority of the reach is typified by shallow, boulder-filled runs

between which there are several pools with bedrock substrate and sparse instream cover (Plate 3.3-20).

Upstream of Reach 4, Umwelt Outflow flows through a large, wetted boulder garden area that

comprises Reach 5 of Umwelt Outflow (Plate 3.3-21). The wetted area covers approximately 8,905 m2

and contains approximately 50% open water and 50% boulder islands, bedrock outcrops, and other

non-wetted features. There is no distinct channel in this area and little to no observable flow of water,

and as such some habitat summary measurements such as bankfull widths and depths were not

applicable. The abundant instream cover from boulders and pools, with little flow provides fair rearing

habitat, and an important overall habitat quality. The upstream end of this area is bounded by an area

where all water flow is subsurface, creating an impassable barrier to fish.

Reach 6 is the primary inflow to an unnamed pond upstream of Reach 5. The reach is extensively

braided, especially at the downstream end of the reach. At the time of the survey, water levels were

high and the wetted width was more than double the bankfull width (wetted width = 12.1 m; bankfull

width = 4.0 m). The flooded area created additional instream cover where it flowed through vegetated

areas (Plate 3.3-22). Cobble and boulder are the primary substrate types, however pockets of gravel

provide good potential spawning habitat. The moderate gradient and instream cover provide good

rearing habitat. The overall habitat is valued as important. The upstream end of Reach 6 is bounded by

an unnamed shallow pond with primarily fine organic substrates and little fish cover. The wetted area

of the pond is 3,201 m2.



Plate 3.3-20. Run with boulder substrate and pool with bedrock substrate in

Reach 4 of Umwelt Outflow, June 15, 2013.

Plate 3.3-21. Non-channelized wetted area upstream of Reach 4 of Umwelt

Outflow, June 15, 2013.



Plate 3.3-22. Off-channel habitat at Reach 6 of Umwelt Outflow, June 15, 2013.

Reach 7 discharges from Umwelt Lake into the unnamed pond. It is a shorter reach (79.2 m) with fair

spawning habitat and good rearing habitat. The overall habitat quality is important. The substrate is a

combination of organic fine sediment, sand, and gravel (Plate 3.3-23). Instream cover was provided by

instream vegetation in flooded areas outside the banks.

Plate 3.3-23. Small pockets of spawning gravel at Reach 7 of Umwelt Outflow,

June 15, 2013.



Llama Outflow

There are two reaches that form the Llama Outflow, starting from the downstream end of Llama

Outflow where it discharges into Umwelt Lake and moving upstream towards Llama Lake (Figure 3.3-3).

Reach 1 of Llama Outflow is immediately upstream of Umwelt Lake (Plate 3.3-24). It is a narrow reach

(bankfull width = 0.7 m), although at the time of the survey the water had flooded over the banks and

was providing off-channel habitat (wetted width = 3.1 m; Table 3.3-7 and Table 3.3-8). The substrate is

primarily cobble and boulder, which provides abundant instream cover and good habitat for rearing

fish. The spawning habitat is of fair quality and the reach contains important overall fish habitat.

Plate 3.3-24. Reach 1 of Llama Outflow upstream of Umwelt Lake,

June 18, 2013.

Reach 2 of Llama Outflow is of moderate size (bankfull width = 2.9 m) and is shallow (bankfull

depth = 0.13 m). The substrate is a mixture of fines, gravel, cobble, and boulder, with appropriate-sized

substrate to provide good grayling spawning habitat in some microhabitat units (Plate 3.3-25).

The habitat is also of good quality for rearing. Good spawning habitat is not common in the Llama and

Umwelt area, and as a result the good spawning habitat in Llama Outflow is of critical value.

Giraffe Inflow

There are five reaches that form the Giraffe Inflow, starting from the downstream end of Giraffe Inflow

where it discharges into Giraffe Lake and moving upstream (Figure 3.3-4). Directly upstream of Giraffe

Lake, Reach 1 of Giraffe Inflow consists of boulder garden morphology with only intermittent areas of

open water between which water flows subsurface (Table 3.3-9). Although off-channel habitat and

other types of non-channelized wetted areas are frequent within Reach 1, there is no continuous

wetted area that could provide potential fish passage upstream of Giraffe Lake and thus no fish habitat

is present (Plate 3.3-26). Where surface water is present, deep pools are a frequent habitat type,

although some riffle habitat was also identified (Table 3.3-10).

PROJECT # 0234411-0005 GIS # BAC-06-180c March 17, 2014

Llama Outflow Stream Reaches andSurvey Sites, 2013

Figure 3.3-3

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Goose Property Area

Llama PitWRSA A

Reach 1

Reach 2

Llama Lake

Umwelt Lake

Pond 1

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Resource Pit


Potential Development Area(PDA)



Table 3.3-7. Characteristics of Llama Outflow Stream Reaches, 2013

Llama Outflow

Attribute Units 1 2

Site n/a 505 506

Morphology n/a Run Run

Secondary Habitat n/a Braided with OCH -

Reach Length m 160 276.4

Mean Gradient % 1.0 1.0

Mean Bankfull Width m 0.7 2.9

Mean Wetted Width m 3.1 3.1

Mean Bankfull Depth m 0.09 0.13

Mean Wetted Depth m 0.14 0.13

Bankfull area m2 117 802

Spawning n/a Fair Good

Overwintering n/a None None

Rearing n/a Good Good

Overall n/a Important Important





Table 3.3-8. Weighted Mean Habitat Characteristics of Llama Outflow Stream Reaches, 2013

Llama Outflow

Attribute Units 1 2

Organics % 0 0

Fine % 0 5

Gravel % 0 10

Cobble % 70 65

Boulder % 30 20

Bedrock % 0 0

Compaction n/a Medium Medium

Bank Stability n/a Stable Stable

Bank Substrate n/a Cobble Cobble

Number of Pools no. 0 0

Mean Maximum Pool Depth m - -

Mean Crest Depth m - -

Mean Residual Depth m - -

Pool % 0 0

Boulder % 30 5

Instream Vegetation % 0 2

Overhanging Vegetation % 0 0

(continued)



Table 3.3-8. Weighted Mean Habitat Characteristics of Llama Outflow Stream Reaches, 2013

(completed)

Llama Outflow

Attribute Units 1 2

Undercut Bank % 0 1

Total Cover % 30 8

Riffle no. 0 0

Pool no. 0 0

Run no. 1 1

Cascade no. 0 0

Boulder Garden no. 0 0

Other no. 0 0



No. = number

Plate 3.3-25. Mixed substrate types in Reach 2 of Llama Outflow, June 18, 2013.

Reach 2 is a long (383.6 m) deep (1.2 m maximum depth) pool-riffle complex located upstream of the

barriers identified in Reach 1. Boulder and bedrock are the dominant substrate types (Plate 3.3-27).

The gradient is low. Rearing habitat is of fair quality, but no spawning or overwintering habitat was

identified within the reach. Habitat in Reach 2 has no value to fish populations due to barriers

upstream and downstream preventing movement in or out of the reach.

PROJECT # 0234411-0005 GIS # BAC-06-180d March 16, 2014

Giraffe Inflow Stream Reaches andSurvey Sites, 2013

Figure 3.3-4

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Reach 1

Reach 2

Reach 5

Reach 5

Reach 3

Reach 4

UnnamedPond

Giraffe Lake

Leaf Lake

430200

430200

430400

430400

430600

430600

430800

430800

431000

431000

431200

431200

431400

431400

72

72

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72

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73

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1:4,000

0 100 200

Metres


Obstruction

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") Cascade

!( Rock

ÛÚ Underground Flow

Stream by Reach

Reach 2

Reach 3

Reach 4

Reach 5

Tailings ImpoundmentArea Embankment

TailingsImpoundment Area




Table 3.3-9. Characteristics of Giraffe Inflow Stream Reaches

Giraffe Inflow

Attribute Units 1 2 3 4 5

Site n/a 210, 211, 212, 213 200 201 203 -

Morphology n/a Boulder Garden Pool Boulder Garden Riffle Riffle

Secondary Habitat n/a OCH OCH Intermittent

channel

OCH, incoming

seeps

Braided, incoming

seeps

Reach Length m - 383.6 663.6 103.8 522.7

Mean Gradient % 0.5 0.0 1.0 1.0 2.5

Mean Bankfull Width m 11.6 9.0 1.0 10.0 10.0

Mean Wetted Width m 11.4 15.0 1.0 8.0 9.0

Mean Bankfull Depth m 0.36 0.80 0.15 0.35 0.35

Mean Wetted Depth m 0.51 1.00 0.15 0.31 0.30

Bankfull area m2 - 3,452 630 1,038 5,227

Spawning n/a None None None None* None*

Overwintering n/a None None None None None*

Rearing n/a None None* None* None* None*

Overall n/a None None* None* None* None*





* Lack of habitat a consequence of fish access to reach, not habitat characteristics

Plate 3.3-26. Fish access upstream of the deep pool (left) is prevented by rocks

and subsurface flow forming a barrier (right), Reach 1, Giraffe Inflow,

June 14, 2013.



Table 3.3-10. Weighted Mean Habitat Characteristics of Giraffe Inflow Stream Reaches, 2013

Giraffe Inflow

Attribute Units 1 2 3 4 5

Organics % 0 0 0 0 0

Fine % 3 5 2 0 0

Gravel % 4 0 8 10 2

Cobble % 10 20 38 40 35

Boulder % 68 40 38 40 35

Bedrock % 13 35 14 10 28

Compaction n/a - Low Low Low Low

Bank Stability n/a Stable Stable Stable Stable Stable

Bank Substrate n/a - Bedrock Boulder Boulder Bedrock

Number of Pools no. 2 1 1 0 0

Mean Maximum Pool Depth m 1.00 1.20 0.68 - -

Mean Crest Depth m 0.15 - 0.10 - -

Mean Residual Depth m 0.85 - 0.58 - -

Pool % 0 4 1 0 0

Boulder % 19 19 16 10 15

Instream Vegetation % 3 3 0 0 0

Overhanging Vegetation % 15 0 2 10 10

Undercut Bank % 4 0 0 0 0

Total Cover % 30 25 20 20 25

Riffle no. 2 0 0 1 -

Pool no. 2 1 1 0 -

Run no. 1 0 1 0 -

Cascade no. 0 0 0 0 -

Boulder Garden no. 3 0 0 0 -

Other no. 0 0 0 0 -



No. = number

Reach 3 is a boulder garden with intermittent channelization (Plate 3.3-28). An impassable boulder

garden located mid-reach prevents potential fish passage through the reach. Instream and bank

substrates are dominated by boulder and cobble. The open water areas are characterized by pool and

riffle morphology. Pools and riffles are created due to bedrock formations, and there is little evidence

of streambed scour influencing stream morphology. Habitat in Reach 3 has no value to fish populations

due to barriers preventing movement into and within the reach.

Reach 4 is primarily riffle habitat. There is abundant off-channel habitat and several locations where

groundwater seeps enter the main channel. As in Reaches 1 through 3, boulder and cobble are the

dominant substrate types, but in Reach 4 there are pockets of gravel that provide potential, though

poor-quality, spawning habitat. Instream boulders and overhanging vegetation from small shrubs

provide instream cover, and the potential as rearing habitat is fair. Habitat in Reach 4 has no value to

fish populations due to barriers upstream and downstream preventing movement in or out of the reach.

Approximately 80 m upstream of the downstream end of the reach, a shallow boulder garden forms a

fish barrier preventing fish movement into the reach from downstream (Plate 3.3-29).

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