Appendix - Phase 1 Fish Passage Assessment Data and Photos

Location and Stream Data
Crossing Characteristics
Date 2024-09-17 Crossing Sub Type Round Culvert
PSCIS ID 8530 Diameter (m) 2.4
External ID Length (m) 38
Crew LS AI TP VJ Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 582719 Resemble Channel No
Northing 6073883 Backwatered No
Stream Sandstone Creek Percent Backwatered
Road McDonnell FSR Fill Depth (m) 9
Road Tenure MoF Outlet Drop (m) 0.5
Channel Width (m) 3.9 Outlet Pool Depth (m) 0.4
Stream Slope (%) 2 Inlet Drop No
Beaver Activity No Slope (%) 5
Habitat Value High Valley Fill Deep Fill
Final score 42 Barrier Result Barrier
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 33
Comments: The stream has good quality habitat with abundant overhanging vegetation and boulders providing cover, pools for overwintering fish, and gravel suitable for spawning. Rainbow trout, cutthroat trout, and Dolly Varden were captured upstream of the crossing during sampling. Very large culvert with a significant amount of road fill (9m). There was an engineering site survey conducted in 2024 but the design plans were put on hold due to high replacement costs and uncertainty around if salmon could access the crossing due to potential barriers downstream. DFO was involved and reported that coho were spawning downstream of the crossing in October 2024.
Photos: PSCIS ID 8530. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-18 Crossing Sub Type Bridge
PSCIS ID 58235 Diameter (m) 12
External ID Length (m) 10
Crew AI Embedded
UTM Zone 9 Depth Embedded (m)
Easting 616177 Resemble Channel
Northing 6074155 Backwatered
Stream Kathlyn Creek Percent Backwatered
Road Highway 16 Fill Depth (m)
Road Tenure MoTi Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: New, well built, bridge.
Photos: PSCIS ID 58235. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-19 Crossing Sub Type Round Culvert
PSCIS ID 195934 Diameter (m) 1.2
External ID Length (m) 16
Crew LS VJ Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 645128 Resemble Channel No
Northing 6034597 Backwatered Yes
Stream Dunalter Creek Percent Backwatered 15
Road Barret Station Road Fill Depth (m) 2
Road Tenure MoTi Outlet Drop (m) 0
Channel Width (m) 1.6 Outlet Pool Depth (m) 0.15
Stream Slope (%) 1 Inlet Drop No
Beaver Activity No Slope (%) 4
Habitat Value Medium Valley Fill Deep Fill
Final score 29 Barrier Result Barrier
Fix type Replace Structure with Streambed Simulation CBS Fix Span / Diameter 3
Comments: The inlet of the culvert is approximately 3m downstream of the outlet of culvert 195935, which crosses under the Houston Airport Rd. The stream has an estimated slope of 1%. Downstream of the culvert, the stream is heavily overgrown. The culvert has holes in the bottom about 2m from the outlet and is backwatered up to that point. Upstream of crossing 195935 there is quality fish habitat and an fish was observed during the assessment. MoTi chris_culvert_id: 1755233
Photos: PSCIS ID 195934. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-19 Crossing Sub Type Round Culvert
PSCIS ID 195935 Diameter (m) 1.2
External ID Length (m) 38
Crew LS VJ Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 645104 Resemble Channel No
Northing 6034615 Backwatered No
Stream Dunalter Creek Percent Backwatered
Road Houston Airport Road Fill Depth (m) 9.9
Road Tenure MoTi Outlet Drop (m) 0.2
Channel Width (m) 1.7 Outlet Pool Depth (m) 0.15
Stream Slope (%) 2 Inlet Drop No
Beaver Activity No Slope (%) 1
Habitat Value Medium Valley Fill Deep Fill
Final score 32 Barrier Result Barrier
Fix type Replace Structure with Streambed Simulation CBS Fix Span / Diameter 35.5
Comments: Upstream of the crossing, there is good habitat for fish, including undercut banks, functional large woody debris, healthy riparian vegetation, and several pools suitable for overwintering fish. A fish ~100mm in length was observed in one of the pools upstream. The culvert is extremely long (38m), with its outlet located approximately 3m upstream of the inlet of crossing 195934. Downstream of crossing 195934 the stream is heavily overgrown.Fill depth 11 m but changed to 9.9 m to meet submission requirements. MoTi chris_culvert_id: 2078335
Photos: PSCIS ID 195935. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-19 Crossing Sub Type Oval Culvert
PSCIS ID 195943 Diameter (m) 2.2
External ID Length (m) 14
Crew LS Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 645439 Resemble Channel No
Northing 6035050 Backwatered No
Stream Stock Creek Percent Backwatered
Road Barrett Station Road Fill Depth (m) 0.4
Road Tenure MoTi Outlet Drop (m) 1.05
Channel Width (m) 2.6 Outlet Pool Depth (m) 0.6
Stream Slope (%) 2 Inlet Drop No
Beaver Activity No Slope (%) 1.5
Habitat Value Medium Valley Fill Deep Fill
Final score 28 Barrier Result Barrier
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 15
Comments: The culvert has a substantial outlet drop of 1.05m, with signs of high flows at the outlet. The stream likely contains numerous pools during higher flows but had very low flows at the time of assessment. Flowing through agricultural land on both sides, the stream is heavily eroded downstream, making it a strong candidate for fencing and riparian management. Upstream habitat was less eroded and consisted of mature riparian vegetation providing good habitat for fish. Only two fish were captured during sampling (both in the deep outlet pool), which was unexpected given the good habitat. Conductivity was extremely high, possibly due to upstream cattle activity and surrounding land use. MoTi chris_culvert_id: 1755230
Photos: PSCIS ID 195943. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-10-03 Crossing Sub Type Round Culvert
PSCIS ID 197967 Diameter (m) 5.6
External ID Length (m) 40
Crew AI Embedded Yes
UTM Zone 9 Depth Embedded (m) 2
Easting 692426 Resemble Channel Yes
Northing 6032341 Backwatered No
Stream Taman Creek Percent Backwatered
Road Highway 16 Fill Depth (m) 7
Road Tenure MoTi Outlet Drop (m) 0
Channel Width (m) 5.5 Outlet Pool Depth (m) 0
Stream Slope (%) 2 Inlet Drop No
Beaver Activity Yes Slope (%) 3
Habitat Value Medium Valley Fill Deep Fill
Final score 16 Barrier Result Potential
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 27
Comments: This is a brand-new replacement structure, extremely well built with extensive embedment that includes numerous large boulders, cobbles, and gravel. The multiplate round structure is embedded nearly 2m. Upstream, woody debris and boulder structures are cabled together for added stability. This massive construction project involved a substantial amount of fill extending 60m downstream and over 200m upstream. MoTi chris_culvert_id: 2076452
Photos: PSCIS ID 197967. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-24 Crossing Sub Type Bridge
PSCIS ID 198217 Diameter (m) 14
External ID Length (m) 4
Crew LS AI Embedded
UTM Zone 9 Depth Embedded (m)
Easting 582850 Resemble Channel
Northing 6130490 Backwatered
Stream Sik-e-dakh Percent Backwatered
Road Sik-e-dakh Water Tower Road Fill Depth (m)
Road Tenure MoTi Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: The culvert was replaced with a bridge, featuring excellent construction with a wide channel beneath the structure. Riprap has been covered with soil to promote vegetation growth, and significant riparian restoration is underway with trees and shrubs being planted. Overall, this is a well-executed replacement project.
Photos: PSCIS ID 198217. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-20 Crossing Sub Type Round Culvert
PSCIS ID 203122 Diameter (m) 3
External ID 1805555 Length (m) 25
Crew AI Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 614941 Resemble Channel Yes
Northing 6075232 Backwatered No
Stream Simpson Creek Percent Backwatered
Road Railway Fill Depth (m) 1
Road Tenure CN Rail Outlet Drop (m) 0.05
Channel Width (m) 5 Outlet Pool Depth (m) 0.9
Stream Slope (%) 1 Inlet Drop Yes
Beaver Activity Yes Slope (%) 2
Habitat Value High Valley Fill Deep Fill
Final score 24 Barrier Result Barrier
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 15
Comments: Although this culvert is on Simpson Creek, it is not currently conveying the main flow and remains mostly dry. Two 1.5 m diameter pipes run under the railway, approximately 30 m apart. The southern pipe is fully embedded with an average embedment depth of 25 cm, while the northern pipe is currently passing all stream flow. This is a high-value stream with extensive gravel areas suitable for steelhead, coho, and chinook salmon spawning upstream. The adjacent landowner has reported recent observations of steelhead spawning and has historical knowledge of chinook spawning approximately 300 m downstream from Nielsen Road.
Photos: PSCIS ID 1805555. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-25 Crossing Sub Type Round Culvert
PSCIS ID 203123 Diameter (m) 0.6
External ID 8300088 Length (m) 16
Crew AI JO Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 581685 Resemble Channel
Northing 6114465 Backwatered No
Stream Tributary to Comeau Creek Percent Backwatered
Road Comeau Road Fill Depth (m) 0.4
Road Tenure MoTi Outlet Drop (m) 0
Channel Width (m) 0.5 Outlet Pool Depth (m) 0
Stream Slope (%) 1.5 Inlet Drop No
Beaver Activity No Slope (%) 1
Habitat Value Low Valley Fill Deep Fill
Final score 18 Barrier Result Potential
Fix type Replace Structure with Streambed Simulation CBS Fix Span / Diameter 3
Comments: No visible channel was observed; the area appeared to be a wet draw during the survey, with some sedges present upstream. It is unlikely to provide fish habitat. BC Freshwater atlas mapping of this watershed is incorrect as the main stream at the confluence with the Skeena River is actually Comeau Creek vs Gershwin Creek. Therefore, this crossing is actually on a tributary to Comeau Creek. MoTi chris_culvert_id: 1524657
Photos: PSCIS ID 8300088. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-25 Crossing Sub Type Round Culvert
PSCIS ID 203124 Diameter (m) 0.6
External ID 8300015 Length (m) 14
Crew AI JO Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 581852 Resemble Channel
Northing 6115965 Backwatered No
Stream Gershwin Creek Percent Backwatered
Road Comeau Road Fill Depth (m) 0.5
Road Tenure MoTi Outlet Drop (m) 0
Channel Width (m) 0.95 Outlet Pool Depth (m) 0
Stream Slope (%) 1 Inlet Drop Yes
Beaver Activity No Slope (%) 3
Habitat Value Medium Valley Fill Deep Fill
Final score 26 Barrier Result Barrier
Fix type Replace Structure with Streambed Simulation CBS Fix Span / Diameter 3
Comments: This is a newer PVC pipe with a beaver grate on the inlet. Debris clogging about 20 cm of the inlet has caused water to back up upstream of the crossing. Downstream, the drainage is very small, with a fence located approximately 10 m away. BC Freshwater atlas mapping of this watershed is incorrect as the main stream at the confluence with the Skeena River is actually Comeau Creek vs Gershwin Creek. This crossing is actually on Gershwin Creek, which is a tributary to Comeau Creek. MoTi chris_culvert_id: 1524661
Photos: PSCIS ID 8300015. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-25 Crossing Sub Type Round Culvert
PSCIS ID 203125 Diameter (m) 1.37
External ID 2024092550 Length (m) 6
Crew LS JD Embedded No
UTM Zone 9 Depth Embedded (m)
Easting 581313 Resemble Channel
Northing 6115473 Backwatered No
Stream Comeau Creek Percent Backwatered
Road Private property Fill Depth (m) 0.5
Road Tenure Private Outlet Drop (m) 0
Channel Width (m) 6 Outlet Pool Depth (m) 0.3
Stream Slope (%) 5 Inlet Drop Yes
Beaver Activity No Slope (%) 2
Habitat Value High Valley Fill Deep Fill
Final score 21 Barrier Result Barrier
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 15
Comments: The landowner has constructed a bridge over the stream with two culverts, measuring 0.47 m and 0.9 m in diameter. Some flow passes through the culverts while some bypasses them, though it is unclear if fish can navigate the bypassing flow. The bridge appears to provide access to adjacent agricultural fields. High-quality habitat with numerous pools and abundant gravel is present, but strong currents in the culverts due to significant flow likely inhibit fish passage.BC Freshwater atlas mapping of this watershed is incorrect as the main stream at the confluence with the Skeena River is actually Comeau Creek vs Gershwin Creek. Therefore, this crossing is actually on Comeau Creek.
Photos: PSCIS ID 2024092550. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-20 Crossing Sub Type Round Culvert
PSCIS ID 203126 Diameter (m) 2.85
External ID 2024092003 Length (m) 7
Crew AI Embedded Yes
UTM Zone 9 Depth Embedded (m) 0.2
Easting 615326 Resemble Channel Yes
Northing 6075142 Backwatered No
Stream Simpson Creek Percent Backwatered
Road Private driveway Fill Depth (m) 1
Road Tenure Private Outlet Drop (m) 0
Channel Width (m) 7 Outlet Pool Depth (m) 0.3
Stream Slope (%) 1.5 Inlet Drop Yes
Beaver Activity Yes Slope (%) 3
Habitat Value High Valley Fill Deep Fill
Final score 21 Barrier Result Barrier
Fix type Replace with New Open Bottom Structure Fix Span / Diameter 15
Comments: Three 0.95 m pipes run under a private driveway. The pipe lengths and gradients are estimated, with two pipes appearing fully embedded and one slightly elevated by approximately 30 cm. The stream is channelized with large boulders throughout the property. Beaver activity is evident, with debris at the inlet and three dams ranging from 0.4 to 1 m high within 150 m upstream. The landowner reported previous blockages caused by beavers, requiring the inlet to be cleared and significant amounts of accumulated material to be dredged out.
Photos: PSCIS ID 2024092003. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-20 Crossing Sub Type Bridge
PSCIS ID 203127 Diameter (m) 12
External ID 2024092001 Length (m) 4
Crew AI Embedded
UTM Zone 9 Depth Embedded (m)
Easting 614346 Resemble Channel
Northing 6075065 Backwatered
Stream Simpson Creek Percent Backwatered
Road Private driveway Fill Depth (m)
Road Tenure Private Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: Steel bridge, potentially for pedestrian or ATV use only, located on a private road on private land.
Photos: PSCIS ID 2024092001. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-20 Crossing Sub Type Bridge
PSCIS ID 203128 Diameter (m) 7.4
External ID 2024092002 Length (m) 1
Crew AI Embedded
UTM Zone 9 Depth Embedded (m)
Easting 614775 Resemble Channel
Northing 6075153 Backwatered
Stream Simpson Creek Percent Backwatered
Road Whalen Road Fill Depth (m)
Road Tenure MoTi Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: Small wooden foot bridge linking private property on Whalen Road right of way.
Photos: PSCIS ID 2024092002. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-25 Crossing Sub Type Bridge
PSCIS ID 203129 Diameter (m) 13
External ID 2024092501 Length (m) 2
Crew AI JO Embedded
UTM Zone 9 Depth Embedded (m)
Easting 581028 Resemble Channel
Northing 6115707 Backwatered
Stream Gershwin Creek Percent Backwatered
Road Private Fill Depth (m)
Road Tenure Private Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: Steel structure suitable for foot traffic or ATV use, located on private land. vs Gershwin Creek. BC Freshwater atlas mapping of this watershed is incorrect as the main stream at the confluence with the Skeena River is actually Comeau Creek vs Gershwin Creek. This crossing is actually on Gershwin Creek, which is a tributary to Comeau Creek.
Photos: PSCIS ID 2024092501. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.





Location and Stream Data
Crossing Characteristics
Date 2024-09-27 Crossing Sub Type Ford
PSCIS ID 203130 Diameter (m) 9
External ID 2024092751 Length (m) 3
Crew LS AI Embedded
UTM Zone 9 Depth Embedded (m)
Easting 613951 Resemble Channel
Northing 6074629 Backwatered
Stream Simpson Creek Percent Backwatered
Road Transmission line road Fill Depth (m)
Road Tenure Outlet Drop (m)
Channel Width (m) Outlet Pool Depth (m)
Stream Slope (%) Inlet Drop
Beaver Activity No Slope (%)
Habitat Value Valley Fill
Final score 0 Barrier Result Passable
Fix type Fix Span / Diameter
Comments: Ford across transmission line road which parallels the transmission lines. Fully passable.
Photos: PSCIS ID 2024092751. From top left clockwise: Road/Site Card, Barrel, Outlet, Downstream, Upstream, Inlet.