WRIA 31 Instream Habitat Assessment

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Segment InformationChannel Unit InformationMeasurement Unit of Measure Measurement Unit of MeasurevegetationVegetation class inthe outer riparianzone, whichextends from theouter edge of theinner zone to apoint 75 feet fromthe stream.Alphanumeric codes –the same used for theinner zoneSubstratecomposition% bedrock (>4096mm)% boulder (256 to4096 mm)% cobble (64 to 256mm)% gravel (16 to 64mm)% pebble (2 to 16 mm)% sand (0.06 to 2 mm)% silt and clay (
Hydromodifications were noted within the sample segments and at any other locationwhere they were encountered. Documentation of hydromodifications included the GPSlocation, type, length of affected stream (ft), percent of width of the channel affected,wetted width of stream bankfull width of stream, floodprone width of stream, and notes.Barriers were also documented within the sample segments and any other location wherethey were encountered. Documentation of barriers included GPS location, length ofculvert, drop, falls, or chute, height of culvert, drop or chute above stream bottom, waterdepth, plunge pool length, width, and depth, bankfull width and depth, and notes andphotos.Details regarding field data collection procedures and can be found in the QualityAssurance Project Plan (QAPP) developed for this study (Glass 2008) and the ForestService Stream Inventory Handbook (USFS 2006).3.3.2 Fish Presence/AbsenceFish presence was determined in each of the sample segments where habitat data werecollected. The segments were snorkeled in one pass and the numbers of fish observedwas recorded by species and size class. Size classes were defined as
Page 1: WRIA 31 InstreamHabitat AssessmentG
Page 5 and 6: Table of ContentsAbstract..........
Page 7 and 8: List of FiguresFigure 1. Study area
Page 9 and 10: We wish to thank the Nature Conserv
Page 11 and 12: Figure 1. Study areaWRIA 31 Instrea
Page 13 and 14: around 24 inches along the western
Page 15 and 16: Figure 3. Daily maximum water tempe
Page 17 and 18: Figure 4. Major streams in WRIA 31.
Page 19: Table 1. Data collected in the fiel
Page 23 and 24: • Existing traffic count data for
Page 25 and 26: Cultivated small grains; and Cultiv
Page 27 and 28: 3.5.6 Road Surface ErosionSEDMODL2
Page 29 and 30: Totalsamplelength(ft)TotalSampleLen
Page 31 and 32: Table 9. Number and type of channel
Page 33 and 34: 60.0%Percent of EachChannel Unit Ty
Page 35 and 36: Table 10. Pool Volume in each reach
Page 37 and 38: Table 12. Spawning area in each rea
Page 39 and 40: Chapman CreekAverage PercentComposi
Page 41 and 42: spawning habitats. Spawning areas a
Page 43 and 44: Chapman Creek30Number2010075%% Embe
Page 45 and 46: Basin Stream Reach CanopyCover (%)W
Page 47 and 48: 4.2 FISH SURVEYS4.2.1 Snorkel Surve
Page 49 and 50: 4.2.2 Spawning SurveysSpawning surv
Page 51 and 52: small depression 0.5 foot deep is p
Page 53 and 54: the heavy rainstorms which occurred
Page 55 and 56: Figure 16. 1992 Landsat land cover
Page 57 and 58: locations, the livestock have free
Page 59 and 60: Figure 18. Stream flow, water tempe
Page 61 and 62: mortality reported at various sedim
Page 63 and 64: some cases, the sparse condition is
Page 65 and 66: was based on a one-day site visit a
Page 67 and 68: Aspect Consulting, LLC 2005. Rock C
Page 69 and 70: Reiser, D.W., and R.G. White. 1988.

WRIA 31 Instream Habitat Assessment

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