Endangered Species Act Section 7 Consultation - Seattle District

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16. Designs will demonstrate that ecological functions including bedload movement, large wood and other debris movement, and flood flows can occur as appropriate to the site. b. Retrofitting Culverts Description: Where culvert replacement is not currently feasible, culverts may be retrofitted in the short term to improve passage by installing structures including baffles and step-and-pool weirs at outlets. Conservation Measures: 1. Projects will be retrofitted to meet the most current version of the NMFS Anadromous Salmonid Fish Facility Design manual or WDFW’s fish passage criteria for salmon and trout (Bates et al. 2003). 2. Projects will demonstrate a commitment to a long-term solution. A retrofitted culvert will be replaced with a bridge or culvert that is at the time of retrofitting scheduled and funded and that meets the most current version of the NMFS Anadromous Salmonid Fish Facility Design manual. 3. All retrofitted culverts will have a maintenance plan which assures that the fishway will be maintained to provide original design conditions prior to each fish passage season and inspected at least after every 10 year flow event. c. Culvert Removal Description: Removal of unnecessary culverts to improve salmonid access and habitat functions. When circumstances permit, culvert removal is the preferred alternative. Conservation Measures: When there is a series of barriers that are proposed to be removed in a short period of time on one system, work will start at the most upstream barrier to minimize impacts to listed fish. d. Tidegate Removal Description: Removal of unnecessary or non-functioning tide gates to restore salmonid access to historic estuarine habitats. 6
e. Removal or Modification of Sediment Bars or Terraces that Block or Delay Salmonid Migrations Description: Land use practices such as timber harvest, large scale agriculture and urban development have resulted in increased, generally fine, sediment delivery to streams. This sediment can accumulate in low velocity areas and contribute to widening of stream mouths, forming bars or terraces. The bar or terrace can spread the streamflow into finely braided or sheet flow patters, forming low flow fish passage barriers. These temporary blockage points often provide opportunities for illegal snagging of holding adult salmon. The COE proposes to restore fish passage by removing sediment to restore flow conditions that allow for passage. Conservation Measures: 1. The maximum amount of material removed from a passage impediment is 100 cubic yards. 2. If the removed material contains more than 60 percent silt or clay it will be disposed of upland. Material with more than 40 percent gravel will be deposited within the active floodplain, but not in wetlands. Material with more than 50 percent gravel and less than 30 percent fines (silt or clay) may be deposited below the OHWL. If material is deposited below the OHWL the applicant will explain the expected benefits, e.g. use as bankfull bench for riparian plantings in area where flood storage is not an issue. 3. If the removed material is suitable for spawning it may be used within the watershed for spawning gravel supplementation including below dams and in sediment-starved reaches. 4. Sandbags may be placed to temporarily improve fish passage. Sandbags will be removed prior to anticipated high flows that could wash away sandbag or cause flow to go around them. 5. If removal of sediment at the same location is proposed for a second time within ten years, a long term plan for a solution other than sediment removal will be presented. For example, placement of large wood can result in scour that may alleviate the local passage impediment. 7
Page 1 and 2: United States Department of Commerc
Page 3 and 4: - 3 - including the scientific just
Page 5 and 6: TABLE OF CONTENTS ABBREVIATIONS AND
Page 7 and 8: INTRODUCTION This document contains
Page 9 and 10: Covered Categories of Restoration A
Page 11: c. At a minimum the culvert width h
Page 15 and 16: They have eliminated or reduced fea
Page 17 and 18: f. Placement of Boulders Descriptio
Page 19 and 20: Conservation Measures: 1. Non-nativ
Page 21 and 22: Conservation Measures: Spawning gra
Page 23 and 24: 2. Irrigation diversion intake and
Page 25 and 26: 7. Boundaries of clearing limits as
Page 27 and 28: 4. Planting and Erosion Control 1.
Page 29 and 30: Measurements of concentration prefe
Page 31 and 32: on the ground, in the water, or wed
Page 33 and 34: Stem injection Cut-stump and Hack &
Page 35 and 36: Method Specific Prescriptions 1. Ma
Page 37 and 38: . Agents demonstrated to have direc
Page 39 and 40: 6. After project completion the app
Page 41 and 42: ENDANGERED SPECIES ACT Section 7(a)
Page 43 and 44: The status of each ESU or DPS, is p
Page 45 and 46: have contributed substantially to t
Page 47 and 48: Dam in 1975. The recent five-year m
Page 49 and 50: 1990s natural spawners were not obs
Page 51 and 52: Creek populations. All of the DPS h
Page 53 and 54: divergent relative to the local nat
Page 55 and 56: eaching recovery goals. Many core a
Page 57 and 58: habitats required for the anadromou
Page 59 and 60: Matheny Creek. Except for the lower
Page 61 and 62: Umatilla, Walla Walla, and Grande R
Page 63 and 64:
Bull trout in the Entiat River loca
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or protection. Such requirements in
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animal. Essential habitat types for
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(8) Snake River Basin steelhead hab
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stream flows, and reduced access to
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Sixteen major (greater than 10,000
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ecently been made in Mill Creek and
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Freshwater Habitat There are approx
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Areas with lighter shades of yellow
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stream segments that were assessed,
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Total Partial Listed Fish and/or Wa
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considerations that: (1) We expect
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The Dewatering Protocol directs tha
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Water Quality--Turbidity and Sedime
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Herbicides are used to clear invasi
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the EPA used the NOEC of 25.7 mg/l
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Short-term adverse effects on water
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4. Side Channel/Off-Channel Habitat
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NMFS recognizes the value of screen
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Effects of Action (s) Relevant Indi
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aseline conditions, no past project
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37 Yakima Core Area H 286 0 45 Wena
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establishment of healthy riparian p
Page 109 and 110:
continue to expand east toward the
Page 111 and 112:
Regarding the quality of these proj
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habitat that was not considered in
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Reasonable and Prudent Measures The
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In response to increased oversight
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LITERATURE CITED Ainslie, B.J., R.J
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McIntosh, B.A., J.R. Sedell, J.E. S
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Rosgen, D. 1996. Applied River Morp
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USFWS (United States Fish and Wildl
Page 127 and 128:
Appendix A: Dewatering And Fish Cap
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Management or Core Area Recovery Un
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d. Electrofishing. Optional. Use el
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C. Rewater Instream Work Area Remov
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sheeting. A portable bladder dam or
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Appendix B: In-Water Work Windows f
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Appendix C: Anadromous Stream Miles
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1707010513 Mid Columbia Mid Columbi
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1711001405 Lower Puyall Puget Sound
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Potential, Transported Potential, A
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Appendix D: Species with Designated
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River (USFWS 2002; 2004a, b). Each
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Coastal-Puget Sound Interim Recover
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or larger prey, which facilitates g
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fish, because this strategy can cha
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potential to mitigate some of these
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groundwater influence. Stream reach
Page 161 and 162:
LITERATURE CITED Battin, James, Mat
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Hard, J. 1995. A quantitative genet
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Rieman, B.E., and F.W. Allendorf. 2
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Appendix F: Minimization Measures F
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Sidalcea oregana var. calva (Wenatc
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NSOCH1. NSOCH2. NSOCH3. Activities
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Endangered Species Act Section 7 Consultation - Seattle District

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