WRIA 31 Instream Habitat Assessment

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Table 16. Average abundance of large woody debris in the stream segments (segments hadan average length of 110 meters).Basin Stream Reach Number of large woody debris pieces averaged overthe stream segments in each reachSmallMediumLarge Jams RootwadsTotalChapmanCreekPine CreekRock CreekWood GulchGlade CreekChapman Creek 1 1.2 0.6 0.4 0.1 0.0 2.32 0.9 0.4 0.0 0.0 0.0 1.33 0.6 0.5 0.0 0.1 0.1 1.3Pine Creek1 1.1 0.1 0.0 0.0 0.0 1.22 0.3 0.1 0.0 0.0 0.0 0.43 1.0 0.3 0.0 0.1 0.0 1.54 0.8 0.1 0.0 0.0 0.0 1.0Luna Gulch1 1.3 1.0 0.0 0.0 0.1 2.42 0.1 0.0 0.0 0.0 0.0 0.13 0.0 0.1 0.0 0.0 0.0 0.1Quartz Creek 1 1.4 0.1 0.1 0.0 0.0 1.5Rock Creek1 1.6 0.2 0.0 0.3 0.0 2.12 1.0 0.7 0.0 0.0 0.0 1.74 0.1 0.0 0.0 0.0 0.0 0.15 3.8 1.0 0.0 0.0 0.0 4.86 2.1 0.3 0.0 0.0 0.0 2.47 2.9 1.3 0.0 0.0 0.0 4.28 0.1 0.2 0.1 0.0 0.0 0.49 1.5 0.2 0.1 0.0 0.0 1.810 3.0 0.3 0.0 0.0 0.0 3.311 0.1 0.1 0.0 0.0 0.0 0.212 0.6 0.4 0.3 0.0 0.0 1.413 0.9 0.2 0.1 0.1 0.0 1.3Squaw Creek1 1.7 0.2 0.0 0.0 0.0 1.92 2.4 0.2 0.0 0.0 0.0 2.63 0.1 0.0 0.0 0.0 0.0 0.14 0.0 0.0 0.0 0.0 0.0 0.05 0.0 0.0 0.0 0.0 0.0 0.06 0.0 0.0 0.0 0.0 0.0 0.0Wood Gulch7 0.5 0.2 0.1 0.0 0.0 0.71 0.0 0.0 0.0 0.0 0.0 0.02 0.7 0.2 0.0 0.0 0.0 0.93 0.4 0.2 0.0 0.0 0.0 0.74 0.5 0.1 0.0 0.0 0.0 0.65 0.6 0.5 0.1 0.0 0.0 1.2Glade Creek1 0.0 0.0 0.0 0.0 0.0 0.02 0.0 0.0 0.0 0.0 0.0 0.03 0.0 0.1 0.0 0.0 0.0 0.1WRIA 31 Instream Habitat Assessment 37 Watershed Professionals Network
4.2 FISH SURVEYS4.2.1 Snorkel SurveysSnorkel surveys were conducted in 799 stream segments within 33 larger reaches in the RockCreek, Chapman Creek, Wood Gulch, and Pine Creek basins. No fish were found in 53 percentof the stream segments (Appendix A, Maps 41 through 48). The following species wereencountered:Oncorhynchus kisutchOncorhynchus mykissRhinichthys cataractaeRhinichthys OsculusRhinichthys sp.Richardsonius balteatusCoho SalmonSteelhead, rainbow, redband troutLongnose daceSpeckled daceUnknown daceRedside ShinersAccording to the principal at the Bickleton School and a local resident, the students at the schooloften place coho into the stream; hence, the coho that were found were likely planted by thestudents. Chapman Creek contained only speckled dace (Table 17). The other basins had agreater diversity of species. The highest concentration of steelhead/rainbows was found in RockCreek.Eighty-nine (89) percent of the O. Mykiss observed were less than 100mm in length (Table 18).These fish could be either anadromous or resident fish. The remaining fish were larger thansmolts and smaller than kelts or adults; hence, the larger fish were likely all resident fish.The O. Mykiss observed in Pine Creek were all resident fish. Passage is blocked at Highway 14.We also found a natural barrier in Reach 2, which would limit the upstream extent ofanadromous fish once the barrier at the highway is replaced. No other impassible barriers werefound in Rock Creek, Pine Creek, Glade Creek, or Wood Gulch within the sampled segments.Additional barriers may exist outside of the sampled areas.O. Mykiss was found in Wood Gulch up to the confluence with Big Horn Canyon. We did notsample Big Horn Canyon, but did continue up Wood Gulch beyond the confluence for severalmore miles.The highest concentrations of O. mykiss in Rock Creek were found downstream of Luna Gulchin reaches 4 through 7. The total number of fish observed in these reaches constituted 90 percentof the O. mykiss observed in the mainstem of Rock Creek and 71 percent of the O. mykissobserved throughout the subbasin. Two of these reaches, reaches 6 and 7, were intermittentlydry, trapping the fish within the reach. These two reaches contained 60 percent of the O. mykissobserved in the mainstem of Rock Creek and 47 percent of the O. mykiss observed throughoutthe subbasin. Only 8.2 percent of the O. mykiss in the subbasin were found upstream of theBickleton Bridge, suggesting that movement into the headwaters to rear during the warmsummer months is not a common life history strategy. The majority of the O. Mykiss observed inSquaw Creek were located downstream of the confluence with Harrison Creek. Squaw Creeksupported 16% of the total fish observed in the Rock Creek basin.WRIA 31 Instream Habitat Assessment 38 Watershed Professionals Network
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 and 20: Table 1. Data collected in the fiel
Page 21 and 22: Hydromodifications were noted withi
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: Basin Stream Reach CanopyCover (%)W
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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