ODFW AQUATIC INVENTORY PROJECT STREAM REPORT

Transcription

1 ODFW AQUATIC INVENTORY PROJECT STREAM REPORT STREAM: BASIN: South Fork Mill Creek Mill Creek / Columbia River DATES: September 7 9, 5 SURVEY CREW: REPORT PREPARED BY: Brian Bangs / LaNoah Babcock Staci Stein STREAM ORDER: BASIN AREA: 7.68 km FIRST ORDER TRIBUTARIES: 7 USGS MAPS: Brown Creek ECOREGION: Columbia Plateau: Pleistocene Lake Basins HUC NUMBER: 775 LLID: GENERAL DESCRIPTION: The South Fork Mill Creek habitat survey began at the confluence with Mill Creek and continued upstream 5,7 meters ending at the Mill Creek Falls. Three reaches were designated based on property ownership and channel morphology. In the lower reaches the channel was constrained by alternating terraces and hillslopes within a broad valley and in the upper reach the channel was hillslope constrained in a narrow valley. Land use was watershed restricted area and rural residential. Cobble, boulder, and gravel were the primary substrate types. Rapids, cascades, riffles, and scour pools were the dominant habitat types. Large wood volume was low for the surveyed stream. The trees found most frequently in the riparian zones were hardwoods -cm (based on four riparian transects). REACH DESCRIPTIONS: Reach : Reach : (TN-RE-SSW) Length 84 meters. Reach one began at the confluence with Mill Creek and ended at the property boundary. The channel was alternating terrace and hillslope constrained in a broad valley floor within terraces. The average valley width index was 6. (range: 6.-6.). Land use for the reach was rural residential. The average unit gradient was.8 percent. Rapids (6%) and riffles (5%) were the dominate stream habitats. Cobble (%), gravel (6%), boulder (%), and sand (4%) were the primary stream substrates. Active bank erosion was % for the reach. Large wood volume was low at.7m /m. The average residual pool depth was.6m. No riparian transect was conducted in this reach. (TNS-RE-S7NW) Length 795 meters. Reach two began at the restricted watershed area boundary. The channel was alternating terrace and hillslope constrained in a broad valley floor within terraces. The average valley width index was 4.9 (range:.5-6.). Land use for the reach was watershed restricted area. The average unit gradient was. percent. Riffles (9%), rapids (5%), and scour pools (9%) were the dominate stream habitats. Cobble (%), boulder (6%), gravel (%), and sand (%) were the primary stream substrates. Active bank erosion was 6% of the reach length. Large wood volume

2 was low at 5.m /m. The average residual pool depth was.5m. The trees found most frequently South Fork Mill Creek (continued) in the riparian zones were hardwoods -cm (based on one riparian transect). There is a water filtration plant in the reach. Reach : (TN-RE-S8SE) Length,5 meters. The channel was hillslope constrained in a moderate V-shaped valley floor. The average valley width index was. (range:.-4.). Land use for the reach was watershed restricted area. The average unit gradient was 4.5 percent. Cascades (4%), rapids (%), and scour pools (%) were the dominate stream habitats. Cobble (%), boulder (7%), gravel (9%), and sand (%) were the primary stream substrates. Bank erosion was % of the reach length. Large wood volume was low at 5.7m /m. The average residual pool depth was.68m. The trees most frequently in the riparian zones were hardwoods -cm (based on three riparian transects). COMMENTS: No fish were observed by the crew. Mill Creek Falls (8m high bedrock wall) is a barrier to upstream fish migration. The crew noted several human caused features which are potential fish migration barriers. At unit #46 (55m) is a.85m high concrete slab at the water treatment plant; at unit #6 (746m) is a.85 high cement structure at the gauging station; and at unit #65 (89m) is a.m high fish ladder. There are several unnamed tributaries and spring seeps entering the creek.

3 5 (COLUMBIA RIVER BASIN) 5 45 REACH BRIDGE \ CULVERT TRIBUTARY ELEVATION (meters) 4 5 DEBRIS JAM MASS FAILURE FILTRATION PLANT MILL CREEK FALLS 5 RESERVOIR RD DISTANCE (meters) 5 (COLUMBIA RIVER BASIN) 5 45 PERCENT SHADE ELEVATION (meters) DISTANCE (meters)

4 5 (COLUMBIA RIVER BASIN) 5 45 PERCENT SILT AND ORGANICS ELEVATION (meters) DISTANCE (meters) 5 (COLUMBIA RIVER BASIN) 5 45 PERCENT SILT, ORGANICS, AND SAND ELEVATION (meters) DISTANCE (meters)

5 5 (COLUMBIA RIVER BASIN) 5 45 PERCENT GRAVEL ELEVATION (meters) DISTANCE (meters) 5 (COLUMBIA RIVER BASIN) 5 45 PERCENT BEDROCK ELEVATION (meters) DISTANCE (meters)

6 5 (COLUMBIA RIVER BASIN) 5 45 NUMBER OF BOULDERS (running average per m.) ELEVATION (meters) DISTANCE (meters) 5 (COLUMBIA RIVER BASIN) 5 45 POOLS > OR = TO METER DEEP ELEVATION (meters) 4 5 DEPTH (meters) DISTANCE (meters)

7 5 (COLUMBIA RIVER BASIN) 5 45 PIECES OF LARGE WOOD ELEVATION (meters) DISTANCE (meters) 5 (COLUMBIA RIVER BASIN) 5 45 VOLUME OF LARGE WOOD (cubic meters) ELEVATION (meters) DISTANCE (meters)

8 5 (COLUMBIA RIVER BASIN) 5 45 KEYPIECES OF LARGE WOOD ELEVATION (meters) DISTANCE (meters)

9 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/9/5 REACH TN-RE-SSW REACH Valley and Channel Summary Narrow Valley Floor Steep V-shape Moderate V-shape Open V-shape Valley Width Index Hillslope Bedrock Terrace Alt. Terrace/Hill Landuse Constrained Valley Characteristics (Percent Reach Length) % % % 6. VWI Range: 6-6 Broad Valley Floor Constraining Terraces Multiple Terraces Wide Floodplain Channel Morphology (Percent Reach Length) % % % % % Unconstrained Single Channel Multiple Channel Braided Channel % % % % % % Channel Characteristics Type Length (m) Area (m) Dry Units Primary Secondary Channel Dimensions (m) Wetted Active Floodprone n = First Terrace n = Width: Depth:..8 Width: Height: 84, ( ( ) ) ( ( ) ) W:D ratio: 9.8 Entrenchment (ACW:FPW ratio):. Stream Flow Type: Average Unit Gradient: LF.8% Habitat Units/m (total channel length): Habitat Units/m (primary channel length): Water temperature ( C):. -. Land Use: Riparian Vegetation: Riparian, Bank, and Wood Summary Primary Secondary RR D D.7.7 Bank Condition and Shade Bank Status Percent Reach Length Shade (% of 8) Actively Eroding: % Reach avg: 7% Undercut Banks: 7% Range: 5-8 All pieces (>=m x.5m): Volume (m ): Key pieces (>=m x.6m): Large Wood Debris Total Total / m primary channel

10 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 REACH TN-RE-S7NW REACH Valley and Channel Summary Narrow Valley Floor Steep V-shape Moderate V-shape Open V-shape Valley Width Index Hillslope Bedrock Terrace Alt. Terrace/Hill Landuse Constrained Valley Characteristics (Percent Reach Length) % % % Broad Valley Floor Constraining Terraces Multiple Terraces Wide Floodplain 4.9 VWI Range:.5-6 Channel Morphology (Percent Reach Length) % % % % % Unconstrained Single Channel Multiple Channel Braided Channel % % % % % % Channel Characteristics Type Length (m) Area (m) Dry Units Primary Secondary Channel Dimensions (m) Wetted Active Floodprone n = 5 First Terrace n = Width: Depth:.7. Width: Height: 795, ( 9-6 (.6 - ) ).5.6 ( ( ) ) W:D ratio:.8 Entrenchment (ACW:FPW ratio):.4 Stream Flow Type: Average Unit Gradient: LF.% Habitat Units/m (total channel length): Habitat Units/m (primary channel length): Water temperature ( C): Land Use: Riparian Vegetation: Riparian, Bank, and Wood Summary Primary Secondary CR D D Bank Condition and Shade Bank Status Percent Reach Length Shade (% of 8) Actively Eroding: 6% Reach avg: 74% Undercut Banks: % Range: All pieces (>=m x.5m): Volume (m ): Key pieces (>=m x.6m): Large Wood Debris Total Total / m primary channel

11 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 REACH TN-RE-S8SE REACH Valley and Channel Summary Narrow Valley Floor Steep V-shape Moderate V-shape Open V-shape Hillslope Bedrock Terrace Alt. Terrace/Hill Landuse Valley Characteristics (Percent Reach Length) Valley Width Index Constrained % % %. VWI Range: - 4 Broad Valley Floor Constraining Terraces Multiple Terraces Wide Floodplain Channel Morphology (Percent Reach Length) % % % % % Unconstrained Single Channel Multiple Channel Braided Channel % % % % % % Channel Characteristics Type Length (m) Area (m) Dry Units Primary Secondary Channel Dimensions (m) Wetted Active Floodprone n = 9 First Terrace n = Width: Depth: Width: Height:,5 8, ( (. -.6 ) ) ( - ( - ) ) W:D ratio:. Entrenchment (ACW:FPW ratio):.4 Stream Flow Type: Average Unit Gradient: LF 4.5% Habitat Units/m (total channel length): Habitat Units/m (primary channel length): Water temperature ( C): Land Use: Riparian Vegetation: Riparian, Bank, and Wood Summary Primary Secondary CR D S.. Bank Condition and Shade Bank Status Percent Reach Length Shade (% of 8) Actively Eroding: % Reach avg: 79% Undercut Banks: % Range: - All pieces (>=m x.5m): Volume (m ): Key pieces (>=m x.6m): Large Wood Debris Total Total / m primary channel

12 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/9/5 REACH TN-RE-SSW REACH HABITAT DETAIL Habitat Type Number Total Avg Avg Total Large Substrate Units Length Width Depth Area Boulders Percent Wetted Area (m) (m) (m) (m ) (#>.5m) S/O Snd Grvl Cbl Bldr Bdrk POOL-LATERAL SCOUR RAPID/BOULDERS 55.., RIFFLE Total: ,48 5 Avg: HABITAT SUMMARY Habitat Group Number Total Avg Avg Units Length Width Depth Wetted Area Large Boulders (m) (m) (m) (m ) Percent Number (# / m ) Dammed & BW Pools.% Scour Pools % Glides.% Riffles % Rapids 55..,54 6.% Cascades.% Step/Falls.% Dry.% Culverts.% POOL SUMMARY All Pools: Total Total of all Channel Lengths # / Km. Primary Channel Length # / Km. Pools >=m deep:.. Complex pools (LWD pieces>=): Pool frequency (channel widths/pool): Residual pool depth (avg):.6

13 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 REACH TN-RE-S7NW REACH HABITAT DETAIL Habitat Type Number Total Avg Avg Total Large Substrate Units Length Width Depth Area Boulders Percent Wetted Area (m) (m) (m) (m ) (#>.5m) S/O Snd Grvl Cbl Bldr Bdrk CASCADE/BOULDERS POOL-LATERAL SCOUR POOL-PLUNGE POOL-STRAIGHT SCOUR RAPID/BOULDERS RIFFLE RIFFLE W/ POCKETS STEP/BOULDERS STEP/COBBLE STEP/STRUCTURE.9. 5 Total: ,795,4 Avg: HABITAT SUMMARY Habitat Group Number Total Avg Avg Units Length Width Depth Wetted Area Large Boulders (m) (m) (m) (m ) Percent Number (# / m ) Dammed & BW Pools.% Scour Pools % Glides.% Riffles 8..8, 9.46% Rapids % Cascades % Step/Falls % Dry.% Culverts.% POOL SUMMARY All Pools: Total 5 Total of all Channel Lengths # / Km 8.7 Primary Channel Length # / Km 8.9 Pools >=m deep:.. Complex pools (LWD pieces>=): Pool frequency (channel widths/pool): Residual pool depth (avg):.5

14 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 REACH TN-RE-S8SE REACH HABITAT DETAIL Habitat Type Number Total Avg Avg Total Large Substrate Units Length Width Depth Area Boulders Percent Wetted Area (m) (m) (m) (m ) (#>.5m) S/O Snd Grvl Cbl Bldr Bdrk CASCADE/BOULDERS 6, ,49, DRY CHANNEL POOL-ALCOVE POOL-DAMMED POOL-LATERAL SCOUR , POOL-PLUNGE , POOL-STRAIGHT SCOUR RAPID/BOULDERS 9, ,7, 4 6 RIFFLE , RIFFLE W/ POCKETS STEP/BEDROCK.8. 6 STEP/BOULDERS STEP/COBBLE STEP/STRUCTURE Total: 4, ,456,499 Avg: HABITAT SUMMARY Habitat Group Number Total Avg Avg Units Length Width Depth Wetted Area Large Boulders (m) (m) (m) (m ) Percent Number (# / m ) Dammed & BW Pools % Scour Pools ,58.8% Glides.% Riffles ,89 9.7% Rapids 9, ,7.9% Cascades 6, ,49 4.9% Step/Falls % Dry % Culverts.% POOL SUMMARY 86 74,, All Pools: Total Total of all Channel Lengths # / Km 8. Primary Channel Length # / Km 9. Pools >=m deep: 9..5 Complex pools (LWD pieces>=): Pool frequency (channel widths/pool): Residual pool depth (avg):.68

15 STREAM SUMMARY Number Total Avg Avg Total Substrate Large Units Length Width Depth Area Percent Wetted Area Boulders (m) (m) (m) (m ) S/O Snd Grvl Cbl Bldr Bdrk (#>.5m) 68 5, , ,5 Habitat Group Wetted Area (m ) Percent Dammed & BW Pools Scour Pools Glides Riffles Rapids Cascades Step/Falls Dry 6,,858 8,79 8, %.%.% 5.6% 5.9% 4.%.4%.7% Culverts.% Unsurveyed.%

16 : HABITAT DISTRIBUTION REACH REACH WETTED AREA (m^) WETTED AREA (m^) DAM POOL SCOUR POOL GLIDE RIFFLE RAPID CASCADE STEP/FALL DRY DAM POOL SCOUR POOL GLIDE RIFFLE RAPID CASCADE STEP/FALL DRY 9 8 REACH 7 WETTED AREA (m^) DAM POOL SCOUR GLIDE RIFFLE RAPID CASCADE STEP/FALL DRY POOL

17 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 RIPARIAN ZONE VEGETATION SUMMARY REACH REACH Summary of Riparian Zone (-m) transects Total hardwoods/ Total conifers/ ft Total conifers >" dbh/ ft Total conifers >5" dbh/ ft 89 6 Diameter class (cm) -5cm 5-cm -5cm 5-9cm >9cm Total/m Average number of trees in a 5-meter wide band Zone Zone Zone Zones - - meters - meters - meters - meters Conifer Hardwood Conifer Hardwood Conifer Hardwood Conifer Hardwood Canopy closure Shrub cover Grass/forb cover Hillslope High terrace Low terrace Floodplain Wetland/meadow Stream channel Roadbed/Railroad Riprap Surface slope (%) Canopy closure and ground cover Zone Zone Zone - meters - meters - meters (%) (%) (%) Predominant landform in each zone Zone Zone Zone - meters - meters - meters (%) (%) (%) 4 5

18 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 RIPARIAN ZONE VEGETATION SUMMARY REACH REACH Summary of Riparian Zone (-m) transects Total hardwoods/ Total conifers/ ft Total conifers >" dbh/ ft Total conifers >5" dbh/ ft Diameter class (cm) -5cm 5-cm -5cm 5-9cm >9cm Total/m Average number of trees in a 5-meter wide band Zone Zone Zone Zones - - meters - meters - meters - meters Conifer Hardwood Conifer Hardwood Conifer Hardwood Conifer Hardwood Canopy closure Shrub cover Grass/forb cover Hillslope High terrace Low terrace Floodplain Wetland/meadow Stream channel Roadbed/Railroad Riprap Surface slope (%) Canopy closure and ground cover Zone Zone Zone - meters - meters - meters (%) (%) (%) Predominant landform in each zone Zone Zone Zone - meters - meters - meters (%) (%) (%)

19 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY - RIPARIAN SURVEY 9/7/5 Summary of Riparian Zone (-m) for all reaches 4 transects Summary of riparian zone (- feet) extrapolated to, feet along stream Total hardwoods/ Total conifers/ ft Total conifers >" dbh/ ft Total conifers >5" dbh/ ft Average number of trees in a 5-m wide band Diameter class (cm) Zones - - meters Conifer Hardwood -5cm 5-cm -5cm 5-9cm >9cm

20 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 RIPARIAN ZONE VEGETATION Reach Reach Cover (percent) Diameter class (cm) Unit Side Zone Surface Slope Canopy Shrub Grass >9 Notes 48 LF HS Conifer 655, Hardwood LF HS 9 Conifer Hardwood 48 LF HS 5 Conifer WATER Hardwood FILTRATION PLANT 48 RT HS 4 65 Conifer Hardwood 48 RT HS 8 8 Conifer Hardwood 4 48 RT HS 7 6 Conifer Hardwood 5

21 OREGON DEPARTMENT OF FISH AND WILDLIFE HABITAT INVENTORY Report Date: 5/4/6 Survey Date: 9/7/5 RIPARIAN ZONE VEGETATION Reach Reach Cover (percent) Diameter class (cm) Unit Side Zone Surface Slope Canopy Shrub Grass >9 Notes 78 LF HT 9 6 Conifer 68, Hardwood LF HT Conifer Hardwood 5 78 LF HT 55 5 Conifer Hardwood 78 RT HS Conifer STEEP CLIFF Hardwood FACE 78 RT HS Conifer Hardwood 78 RT HS Conifer Hardwood 9 LF HS 75 9 Conifer 68, Hardwood LF HS Conifer Hardwood 9 LF HS 9 Conifer Hardwood 9 RT HS Conifer Hardwood 5 9 RT HS Conifer Hardwood 9 RT HS Conifer U 9 TRIB IS Hardwood 4 M AWAY 8 LF HS Conifer 64, Hardwood 54 8 LF HS Conifer Hardwood 5 8 LF HS Conifer Hardwood 8 8 RT HT 45 5 Conifer Hardwood 8 RT SC 65 Conifer Hardwood 8 RT HS Conifer 4 Hardwood

22 Comment Summary REACH# UNIT# TYPE CHAN DIST. (m) COMMENTS NOTE ESTIMATOR RI 6 LI/ CA-CT, D, D, RR NOTE NUMERATOR POCKETS UP TO.5 M DEEP RI 46 POCKETS UP TO.4 M DEEP 6 LP 84 END OF PRIVATE LAND 7 RB 86 WATERSHED LAND 8 RI 9 D5, D, WATERSHED CB 987 SS/ 4 RP 8 POCKETS UP TO.4 M DEEP 8 RI 4 DJ, SS/, D5, D, WATERSHED 9 RI 49 BC BC, CS/CS SB 5 CS/CS CONCRETE AT TOP RESEVIOR RD BRIDGE SOME CONCRETE AT TOP, BLDRS LP 57 SOME CONCRETE RP 8 CA-CT, D, D5, WATERSHED RI /HS 7 LP 9 CS/ BOULDERS FROM ROAD BED 8 RB BC FOOTBRIDGE 9 LP BC LP 6 DJ, CE/ SCREENED CE/, CHLORENE SMELL 4 RP 6 WATER MONITORING DEVICE WATER MONITORING DEVICE,STAIRS 5 RB 76 CE/ CE/, T=C, WATER PLANT RUNOFF 6 RP 97 U 6 = DIAM =.45 M, H =.4 M CULV DIAM=.45M, OUT OF PLANT 7 SP 4 NUMBER OF DEAD CRAYFISH 4 RB 457 CS/ CA-CT, D, D5 PLACED BOULDERS 4 RP 47 CE/ MAX POCKET DEPTH =.4 M 4 RB 5 /SS SS VALLEY DRY 44 RB 54 DRY /SS WATER FACILITIES TO RIGHT 45 PP 54 CS RIPRAP TO BREAK FLOW FROM STEP 46 SS 55 PA H =.85M, WATER TREATMENT PLAN H =.85 M, CONCRETE SLAB 47 RI 55 WATER TREATMENT PLANT AREA CONCRETE SLAB 48 RB 576 CA-CT, D5, S

23 Comment Summary REACH# UNIT# TYPE CHAN DIST. (m) COMMENTS NOTE ESTIMATOR NOTE NUMERATOR 49 RB 576 ACW =.5, T=C COMES IN FROM TREATMENT POND 5 SP 58 U49=COMES FROM A SETTLING PO 55 SB 68 H =.6 M H =.6 M, CH-MV 58 CB 78 CH-MV, D, S 6 SS 746 PA H =.85 M, PA, GAUGING STATION 6 PP 8 CE/ CE/ H=.85 M, THRU CEMENT STRUCTURE 6 SC 86 NOT MUCH FLOW,CHANNEL DIVERTED 65 SS 89 PA H =. M, PA 66 SS 89 PA CE, H =.4 M, DIAM =.6 M H =. M, FISH LADDER U65=VERY LOW FLOW THROUGH UNIT 67 LP 89 HOLDING TANK, U 66 = H =.4 M 7 SS 854 H =.65 M, OVER CONCRETE WALL H=.65M, CEMENT WALL, POSS WEIR 7 RI 897 GAUGING STATION, BC GUAGE STATION, FOOTBRIDGE 74 RB TERRACE/HS 75 SB H =.65 M H =.65 M 76 RB 5 /LI SMALL LANDSLIDE 77 LP 89 /SS 78 RB 5 CA-CT, D5, S 79 RB 98 POWERLINE CROSSING HS/TERRACE, ROAD BED 8 RB 6 HT/LT 8 RB 6 WL RATTLESNAKE 8 RB 5 WL SS/ RATTLESNAKE DIPPER 86 RB 448 HT/HS 9 RB 66 T = C AT 8 T = C AT 8 98 SP 856 CH-MV, D5, D HS/NEAR HS CB 98 DJ, LI/ RB 4 SS/ SS/ HS/LT, ALDERS 5-, SS IS DRY 4 SB H =.65 M H =.65 M 5 CB 77 SS/ SS/ 7 CB 45 /TJ DJ, /TJ SS IS DRY UNNAMED TRIB, NOT MARKED

24 Comment Summary REACH# UNIT# TYPE CHAN DIST. (m) COMMENTS NOTE ESTIMATOR NOTE NUMERATOR 8 RI 45 ACW =. M 68, RI 7 CH-MV, D5, D CB 4 SS/ SS/ SS IS DRY 5 SB 5 H =.5 M H =.5 M 6 RB 564 SS/ SS IS DRY 9 RB 589 CH-MV, D5, D RB 74 SS/ SS IS DRY DC 74 CONNECTS TO UNIT 8 RB 899 CH-SV, C9, D5 CB 4 /LI 5 SB 474 H =.4 M H =.4M, LOW FLOW WATER 6 PP 484 SS/ 7 SB 485 H =. M H =. M 8 CB 48 TJ/ 64, 54 9 DC 48 WIDTH=ACW TRIB UNIT 4 DC 48 WIDTH=ACW CHNL IS DRY 4 RP 46 POCKETS OF.5,. M DEEP 45 CB 475 MANY OLD GROWTH TREES SEEPS INTO AL THROUGH ROCKS 46 AL 475 NEAR UPPER END OF SURVEY 48 PP 44 CH-SV, D, S 5 SB 4445 H =.8 M H =.8 M 55 CB 4599 SS/ 57 CB 476 /SS, /SS /SS 58 RB 476 CH-SV, D5, C5 6 CB 4899 SOME POCKETS UP TO.8 M DEEP 6 CB 494 SS/ SS/ 6 LP DOUG FIR RI 54 SS/ 67 PP 568 DEPTH ESTIMATED

25 Comment Summary REACH# UNIT# TYPE CHAN DIST. (m) COMMENTS NOTE ESTIMATOR 68 SR 57 PN H = 8. M, PN NOTE NUMERATOR MILL CREEK FALLS

26 NORTH FORK U R START U R 4 ST REACH SOUTH FORK U R START REACH U 7 R START REACH U 55 R START U 47 R START U 68 END Name: BROWN CREEK Date: //6 Scale: inch equals 6 feet Location: 45 ' 6." N 9'.8" W Caption: SUMMER 5 (COLUMBIA RIVER BASIN) HABITAT STREAM SURVEY Copyright (C) 998, Maptech, Inc.

27 South Fork Mill Creek (Columbia) Summer 5 Reach Unit 6 Reach Reach Unit 65 Reach Unit 9 Reach Unit 68