LOWER LAKE CREEK FI SH LOWER LAKE CREEK FI SH PASSAGE ASSESSMENT PASSAGE ASSESSMENT Presented to Presented to Packwood Lake Aquatics Subcommittee Packwood Lake Aquatics Subcommittee January 10- -11, 2008 11, 2008 January 10 Objectives Objectives � Determine if Lower Lake Creek (below the Determine if Lower Lake Creek (below the � Highway 12 Bridge) meets passage criteria Highway 12 Bridge) meets passage criteria for: for: � Chinook Salmon Chinook Salmon � � Coho Salmon Coho Salmon � � Steelhead Trout Steelhead Trout � � Sea Sea- -run Cutthroat Trout run Cutthroat Trout � � Rainbow Trout Rainbow Trout � 1
Objectives (cont’ ’d) d) Objectives (cont � Analysis of flows, as measured at Study Analysis of flows, as measured at Study � Site 1, from: Site 1, from: � 19 19 – – 57 cfs 57 cfs � � As measured at: As measured at: � � Transects 1 Transects 1 – – 4, Study Site 1 (RM 0.0 4, Study Site 1 (RM 0.0 – – 0.3) 0.3) � Methods Methods � Energy Northwest Used the Energy Northwest Used the “ “Oregon Oregon � Method Method” ” as per Thompson (1972) as per Thompson (1972) � Used to determine passage for salmon and Used to determine passage for salmon and � trout trout � Used throughout the Northwest Used throughout the Northwest � � Used to determine passage at Used to determine passage at Peshastin Peshastin Creek Creek � (Wenatchee River tributary) in 2007. (Wenatchee River tributary) in 2007. 2
Oregon Method Oregon Method � Thompson Thompson’ ’s Minimum Depth s Minimum Depth � Recommendations: Recommendations: � Salmon Salmon – – 0.8 ft 0.8 ft � � Large Trout Large Trout – – 0.6 ft 0.6 ft � � Width Criteria: Width Criteria: � � 25% of the Wetted Width 25% of the Wetted Width � � 10% Contiguous Width 10% Contiguous Width � Field Measurements Field Measurements � Taken from the Instream Flow Study conducted Taken from the Instream Flow Study conducted � for Lake Creek for Lake Creek � 4 stage/discharge measurements taken 4 stage/discharge measurements taken � � Bed profile developed from surveying Bed profile developed from surveying � � Data derived from RHABSIM program Data derived from RHABSIM program � � MEASUREMENTS ARE FOR NON MEASUREMENTS ARE FOR NON- -TRANSORMED TRANSORMED � TRANSECTS FROM IFIM STUDY; ARE NOT TRANSECTS FROM IFIM STUDY; ARE NOT ENHANCED ENHANCED 3
Final Transect Weighting for Study Site 1 Final Transect Weighting for Study Site 1 (from EES Consulting 2007) (from EES Consulting 2007) Transect Transect Description Transect Transect Description 1 1 Glide Glide 2 2 Run Run 3 3 Low Gradient Cascade/Run Low Gradient Cascade/Run 4 4 Plunge Pool Tailout Plunge Pool Tailout 4
RESULTS RESULTS � Trout (0.6 ft): Trout (0.6 ft): � � Criteria of 25% of total width was met at all Criteria of 25% of total width was met at all � flows analyzed flows analyzed � 51% at Transect 3 (19 cfs) to 93% at Transect 2 51% at Transect 3 (19 cfs) to 93% at Transect 2 � (57 cfs) (57 cfs) � Criteria of 10% contiguous width was also Criteria of 10% contiguous width was also � met on all transects at all flows examined. met on all transects at all flows examined. � 36% at Transect 3 (38 36% at Transect 3 (38 - - 43 cfs) to 93% at 43 cfs) to 93% at � Transect 2 (57 cfs). Transect 2 (57 cfs). RESULTS, cont’ ’d d RESULTS, cont � Salmon (0.8 ft): Salmon (0.8 ft): � � Criteria of 25% of total width was met at all Criteria of 25% of total width was met at all � flows analyzed flows analyzed � 31% at Transect 3 (19 cfs) to 88% at Transect 2 31% at Transect 3 (19 cfs) to 88% at Transect 2 � (36 - (36 - 42 cfs) 42 cfs) � Criteria of 10% contiguous width was also Criteria of 10% contiguous width was also � met on all transects at all flows examined. met on all transects at all flows examined. � 19% at Transect 3 (19 cfs) to 78% at Transect 1 19% at Transect 3 (19 cfs) to 78% at Transect 1 � (36 – (36 – 38 cfs), Transect 2 (36 38 cfs), Transect 2 (36 – – 43 cfs) and 43 cfs) and Transect 4 (28 - Transect 4 (28 - 29 cfs) 29 cfs) 5
Lower Lake Creek Trout Depth (0.6 ft) Lower Lake Creek Trout Depth (0.6 ft) Passage Criteria % of Wetted Width Passage Criteria % of Wetted Width 100% 90% 80% 70% T1-Width 60% T1-Con Percentage T2-Width T2-Con 50% T3-Width T3-Con T4-Width 40% T4-Con 30% % of Width 20% Min. Threshold 10% % Contiguous Width Min. Threshold 0% 15 20 25 30 35 40 45 50 55 60 Flow (cfs) Lower Lake Creek Salmon Depth (0.8 Lower Lake Creek Salmon Depth (0.8 ft) Passage Criteria % of Wetted Width ft) Passage Criteria % of Wetted Width 100% 90% 80% 70% T1-Width 60% T1-Con Percentage T2-Width T2-Con 50% T3-Width T3-Con T4-Width 40% T4-Con 30% % of Width Min. 20% Threshold 10% % Contiguous Width Min. Threshold 0% 15 20 25 30 35 40 45 50 55 60 Flow (cfs) 6
Contiguous width using 1 ft depth Contiguous width using 1 ft depth criteria criteria 18 16 14 12 10 Trans 1 ontiguous ft Trans 2 Trans 3 8 Trans 4 C 6 4 2 0 19 cf s 25 c f s 28 c f s 29 cf s 31 c f s 36 c f s 38 cf s 39 c f s 42 c f s 43 cf s 57 c f s Conclusions Conclusions � Using Thompson Using Thompson’ ’s methods, all transects s methods, all transects � meet depth and wetted width criteria for meet depth and wetted width criteria for all flows analyzed for existing transects all flows analyzed for existing transects � Using agency recommendation of 1.0 ft Using agency recommendation of 1.0 ft � depth and 3 ft contiguous, all flows and depth and 3 ft contiguous, all flows and transects meet criteria with the exception transects meet criteria with the exception of Transect 3, 19 cfs. of Transect 3, 19 cfs. 7
Conclusions, cont’ ’d d Conclusions, cont � The The current condition current condition was modeled for was modeled for � Transects 1 Transects 1 – – 4, Study Site 1. 4, Study Site 1. � Enhanced transects could reflect residual Enhanced transects could reflect residual � depths to meet agency criteria. depths to meet agency criteria. 8
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