Appendix A – Status of Structures Assessed in the Field

Non-Actionable Barriers

Table 11: Structures in Horsefly River watershed that are confirmed as barriers to fish passage for Pacific salmon as of May 2026 but have been identified by the Planning Team as non-actionable due to either logistic considerations (e.g., financial costs) or low-quality upstream habitat.

Barrier ID	Site Name	Watershed Name	Structure Type	Assessment Step Complted	Next Steps	Notes	Supporting Links
126510	Trib to Horsefly R @ unnamed (126510)	HORS	Stream crossing - CBS	Habitat confirmation	Non-actionable	Noted as medium quality habitat in 2014 but down-graded to low during habitat confirmation. No defined channel upstream, 15% gradient downstream of culvert, series of natural 0.6 m high drops over small woody debris downstream with no plunge pools, no spawning substrates present.
126602	Niquidet Cr @ Private (126602)	HORS	Other	Barrier assessment	Non-actionable	System suffers from lack of water. Appears to be an orphaned barrier with no road tenure. Collapsed debris. Easy removal by hand but salmon habitat value unclear.
126603	Alah Cr @ Little Horsefly Rd (126603)	HORS	Stream crossing - CBS	Barrier assessment	Non-actionable	Site dewaters, minimal channel formation processes indicate little to no flows during freshet, also likely attenuated by Alah Lake upstream. Habitat potential limited.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200775
197701	Trib to McKinley Cr @ unnamed (197701)	HORS	Stream crossing - CBS	Barrier assessment	Non-actionable	No suitable habitat: no connectivity to stream, poor spawning and overwintering habitat, moderate rearing potential
199421	Alah Cr @ Private (199421)	HORS	Stream crossing - CBS	Barrier assessment	Non-actionable	Site dewaters. May be some potential for off-channel refugia during spring freshet, but limited channel formation indicates flows are minimal year-round an would be attenuated by Alah Lake.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200766
199422	Alah Cr @ Private (199422)	HORS	Stream crossing - CBS	Barrier assessment	Non-actionable	Stream dry at time of assessment. Some potential for area to serve as off-channel habitat during spring freshet, but lack of scour in channel indicates minimal flows year-round, which would be attenuated by Alah Lake upstream.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200767
57601	Trib to Little Horsefly R @ Horsefly Lk Rd (57601)	HORS	Stream crossing - CBS	Habitat confirmation	Non-actionable	Low quality habitat Poor spawning, rearing and overwintering potential

Data-deficient Barriers

Table 12: Structures in Horsefly River watershed that have been assessed for fish passage for Pacific salmon as of May 2026 but either require an additional in-depth fish-passage assessment to confirm the passability status or a habitat assessment to confirm upstream habitat values.

Barrier ID	Site Name	Structure Type	Assessment Step Completed	Next Steps	Notes	Supporting Links
1006800524	Trib to Horsefly R @ Unnamed (6800524)	TBD	Unassessed	Engage with barrier owner	Could not access site due to landowner fees. Not clear on status of crossing. Riversheds working on barrier owner outreach
1006800552	Trib to Horsefly R @ Unnamed (6800552)	TBD	Unassessed	Engage with barrier owner	Only access to site is via adjacent landowner, who charges fee for access. Riversheds working on landowner engagement.
1006801247	Woodjam Cr @ Private (6801247)	TBD	Unassessed	Engage with barrier owner	Landowner access not granted without hefty fee. Riversheds working on landowner outreach. Status of crossing remains TBD
123916		Stream crossing - CBS	Barrier assessment	Engage with barrier owner	No modeled salmon habitat but high quality habitat noted in 2016. Industry barrier. Was a culvert in 2016. Check with barrier owner whether crossing was removed. Road apparently deactivated but culvert left behind
124269	Trib to Horsefly R @ Unnamed (124269)	Stream crossing - CBS	Barrier assessment	Engage with barrier owner	Crossing is due for reassessment. Landowner access not granted. Asking for a fee for access. Riversheds working on landowner engagement
124271	MacLean Cr @ Private (124271)	Stream crossing - CBS	Habitat confirmation	Engage with barrier owner	Last assessed 2017. Can't access. Brian checking with local consultant on status of crossing. Bring in regulator if no resolution	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?habitatConfirmationId=681
126438	Trib to Horsefly R @ Private (126438)	Stream crossing - CBS	Barrier assessment	Engage with barrier owner	Can't access site (landowner refusal). Brian checking with local consultant if he knows anything about the crossing. Bring to regulator if no resolution.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?habitatConfirmationId=1882
199424	Bassett Cr @ Unnamed (199424)	Other	Barrier assessment	Engage with barrier owner	Located 100 m downstream of 57596. Barrier LWD jam caused by collapsed woodbox culvert
57430	Gifford Cr @ Hendrix-McKinley FSR (57430)	Stream crossing - CBS	Habitat confirmation	In-depth passage assessment (data deficient structures only)	High quality habitat with suitable Coho spawning identified by DWB and confirmed by DFO. Coho present downstream, some steep sections to falls, salmonids throughout to falls	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?habitatConfirmationId=703
57596	Bassett Cr @ R14189-4C Rd (57596)	Stream crossing - CBS	Barrier assessment	Habitat confirmation (data deficient structures only)	Debris jam from collapsed bridge causing barrier. Salmon values/use in stream unknown but habitat quality is high.

Excluded Structures

Table 13: Structures in Horsefly River watershed that are excluded from further consideration in subsequent ranking and work planning because the structure is not present, is confirmed passable (e.g., bridge), or has no habitat upstream for Pacific salmon.

Barrier ID	Site Name	Structure Type	Assessment Step Completed	Reason for Exclusion	Notes	Supporting Links
1006800220		Other	Barrier assessment	No key upstream habitat	No defined stream channel, no water
1006800298		None	Barrier assessment	No structure	Crossing does not exist
1006800484		None	Barrier assessment	No structure	Crossing does not exist
1006800520		None	Other	No structure	Access permission not granted. Landowners confirmed bridge/barrier no longer present
1006801130		None	Barrier assessment	No structure	Crossing does not exist
1006801250		Stream crossing - CBS	Barrier assessment	No key upstream habitat	No defined stream channel at 57387 downstream. Connectivity for salmon expected to be non-existent naturally.
1006801356		None	Barrier assessment	No structure	Crossing does not exist
1200000002		Stream crossing - OBS	Barrier assessment	No structure	Structure does not exist.
124151		Stream crossing - CBS	Barrier assessment	Passable
124152	Trib to Deerhord @ Deerhorn Rd	Stream crossing - CBS	Barrier assessment	No key upstream habitat	Dry at time of assessment
124253	Trib to Little Horsefly R @ Private (124253)	Stream crossing - CBS	Habitat confirmation	No key upstream habitat	Poor quality habitat with no spawning, rearing or overwintering potential.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200774
124267		Stream crossing - CBS	Barrier assessment	No key upstream habitat	No defined channel directly upstream or downstream of crossing. No fish habitat present
124275		Stream crossing - CBS	Barrier assessment	No key upstream habitat
124276		Stream crossing - CBS	Barrier assessment	No key upstream habitat	No habitat present, seasonal stream
125961		Stream crossing - Ford	Barrier assessment	No structure and key upstream habitat	No crossing or defined channel. Vegetation in channel indicates rare flow conditions.
17e18f43-e699-4e2c-ae73-e3f3e48de11f		None	Barrier assessment	No structure	Dam confirmed to not exist (formerly structure 1100000243)
197761	197761	Stream crossing - Ford	Barrier assessment	Passable	Cattle trail/ford, location likely refers to historic crossing that has been decommissioned and abandoned at edge of channel
197763	197763	Stream crossing - Ford	Barrier assessment	Passable	Location is a cattle trail/ford, not a barrier to fish
197764	198875	Stream crossing - OBS	Habitat confirmation	Passable	Road carried by a 2200 mm diameter OBS arch culvert that is 12 m long, does not represent a barrier to fish passage
198160		Stream crossing - OBS	Barrier assessment	Passable	Open bottom arch culvert
198871	197760	Stream crossing - OBS	Barrier assessment	Passable	Pedestrian bridge across creek, not a barrier to fish passage
199417	6800223	Stream crossing - CBS	Barrier assessment	No key upstream habitat	No defined stream channel, no water.
199420	6802406	Stream crossing - CBS	Barrier assessment	No key upstream habitat	Dry at time of assessment with no indication of sufficient flows during frheshet. High up in watershed, unlikely to support anadromous species.	https://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200765
199423	Alah Cr @ Private (199423)	Stream crossing - CBS	Barrier assessment	No key upstream habitat	Dry with minimal channel formation.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200768
199425	6800300	Stream crossing - OBS	Barrier assessment	Passable	Old ATV bridge. Not currently a barrier but has potential to block flows as it decays and falls into stream. Other collapsed bridges nearby are not blocking flows.	http://a100.gov.bc.ca/pub/pscismap/imageViewer.do?assessmentId=200770
199426	6802355	Stream crossing - CBS	Barrier assessment	No key upstream habitat	No water at crossing, undefined channel banks, appears to rarely have flow. No fish habitat present.
199427	6800151	None	Barrier assessment	No structure	Crossing deactivated. Natural log jam present but not blocking flows.
199428	6800651	None	Barrier assessment	No structure and key upstream habitat	No crossing or defined channel. Road deactivated.
40fc35b1-a834-4821-9c09-e8c64a646252		None	Barrier assessment	No structure	Dam confirmed to not exist (formerly structure 1100000763)
57292		Stream crossing - CBS	Habitat confirmation	No key upstream habitat	Impassable natural barrier downstream
57317		Stream crossing - CBS	Habitat confirmation	No key upstream habitat	No suitable habitat: small defined channel but no water = poor spawning, rearing, overwintering potential. No modeled key habitat upstream.
57375		Stream crossing - OBS	Barrier assessment	Passable	Overgrown woodbox culvert. No issues but may collapse over time.
57387	Trib to Deerhorn Cr @ Deerhorn FSR (57387)	Stream crossing - CBS	Barrier assessment	No key upstream habitat	Stream channel downstream undefined. Appears to convey water only during highw ater events from ephemeral wetland. No water or fish habitat present
57479		Stream crossing - OBS	Barrier assessment	Passable	Bridge in good condition.
57495		Stream crossing - OBS	Barrier assessment	Passable	Open bottom arch culvert. Appears undersized. Reassess for functionality in 5 years.
57562		Stream crossing - CBS	Barrier assessment	No key upstream habitat	No defined stream channel downstream, ephermeral wetland with no defined water body upstream.
773d7d7c-11b7-4c8c-b761-ff1d4d60818a		None	Barrier assessment	No structure	Dam confirmed to not exist (formerly structure 1100000814)
a423c60a-dfb1-4414-bba3-bd57c89c6357		Dam	Barrier assessment	Passable	Dam appears to be off channel with water flowing around the dam, no fish passage issues (formerly structure 1100001822)