FEASIBILITY & DESIGN FOR SUGAR ISLAND HABITAT RESTORATION - - PowerPoint PPT Presentation

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FEASIBILITY & DESIGN FOR SUGAR ISLAND HABITAT RESTORATION - - PowerPoint PPT Presentation

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FEASIBILITY & DESIGN FOR SUGAR ISLAND HABITAT RESTORATION NOVEMBER 14, 2018 INTRODUCTION The Detroit River is an: Area of Concern (AOC) per 1987 amendments to the Great Lakes Water Quality Agreement between the U. S. and Canada. Of the

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FEASIBILITY & DESIGN

FOR

SUGAR ISLAND HABITAT RESTORATION

NOVEMBER 14, 2018

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Sugar Island Habitat Restoration – Public Open House 2 smithgroup.com

INTRODUCTION

The Detroit River is an: Area of Concern (AOC)

per 1987 amendments to the Great Lakes Water Quality Agreement between the U.

  • S. and Canada. Of the 31 original U.S.

AOCs, 4 are delisted and 27 remain.

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INTRODUCTION

11 Beneficial Use Impairments (BUIs) were

  • riginally identified to be associated with

the Detroit River:

1. Restrictions on fish and wildlife consumption

  • 2. Tainting of fish and wildlife flavor
  • 3. Degradation of fish and wildlife populations
  • 4. Fish tumors or other deformities
  • 5. Bird and animal deformities or reproductive

problems

  • 6. Degradation of benthos
  • 7. Restrictions on dredging activities
  • 8. Restrictions on drinking water consumption or

taste and odor problems

  • 9. Beach closings
  • 10. Degradation of aesthetic
  • 11. Loss of fish and wildlife habitat

The two BUIs highlighted in red have been removed.

9 Beneficial Use Impairments (BUIs) remain:

1. Restrictions on fish and wildlife consumption

  • 2. Degradation of fish and wildlife populations
  • 3. Fish tumors or other deformities
  • 4. Bird and animal deformities or reproductive problems
  • 5. Degradation of benthos
  • 6. Restrictions on dredging activities
  • 7. Beach closings
  • 8. Degradation of aesthetic
  • 9. Loss of fish and wildlife habitat

Friends of the Detroit River is focusing on the two BUIs highlighted in blue – fish and wildlife-related BUIs.

CSOs and contaminated sediments impede removal of many BUIs

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INTRODUCTION

A guidance document for removing fish and wildlife related BUIs was completed in May 2014. Doors opened for funding!

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INTRODUCTION

The Guidance Plan requires completion of 14 specifically chosen, habitat restoration projects.

Four projects are already complete (green triangles):

A Blue Heron Lagoon Restoration – Completed 2013 B South Fishing Pier Restoration – Completed 2013 C U. S. Steel Shoreline Restoration – Completed 2013 D Shoreline Restoration at Wayne County’s Refuge Gateway – Completed 2012

Sugar Island Habitat Restoration – Public Open House

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Sugar Island Habitat Restoration – Friends of the Detroit River 6 smithgroup.com

INTRODUCTION

Remaining projects include:

  • 1. Detroit River Reefs
  • 2. Detroit Upper Riverfront Parks Restoration
  • 3. Belle Isle Hydrologic Analysis, Feasibility and Pre-

Design

  • 4. Belle Isle Forested Wetland Restoration
  • 5. Lake OkonokaRestoration with River Connection and

Shoreline Restoration

  • 6. Milliken State Park Pocket Marsh with River

Connection

  • 7. Hennepin Marsh Restoration
  • 8. Stony Island Shoal Reconstruction
  • 9. Sugar Island Habitat Restoration
  • 10. Celeron Island Restoration and Shoal Construction

All of the above projects have been initiated and are in various stages of progress.

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PUBLIC OPEN HOUSE

  • Project Purpose & Goals
  • History of Island
  • Field Investigations

— Hydrodynamic & Soils — Flora — Birds — Fish — Amphibians & Reptiles

  • Preliminary Concepts
  • Next Steps

Sugar Island Habitat Restoration – Public Open House

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PROJECT LOCATION

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PROJECT PURPOSE

NEED: Observed loss of habitat and severely eroding banks PURPOSE: To produce feasibility and preliminary design documents for potential habitat restoration improvements on Sugar Island, located in the mouth of the Detroit River. GOALS: Explore ecological value and feasibility in controlling shoreline erosion and simultaneously enhance fish, wildlife and upland habitat.

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ISLAND HISTORY

1880s – 1940s: Recreational Use 1940s – 2012: Vacant, multiple redevelopment ideas

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ISLAND HISTORY

2012: Purchased by the US Fish & Wildlife Service as part of the Detroit River International Wildlife Refuge

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EXISTING CONDITIONS

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WATER LEVELS

6/26/18 Water Level = 574.0 Ordinary High Water Mark = 573.77 Low Water Datum = 569.67 100-Year Floodplain = 577.0

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WIND DATA

Wind Rose Diagram

Percentile Speed (m/s) Speed (mph) 50 6.2 13.9 75 8.2 18.3 90 10.8 24.2 95 12.4 27.7 99 15.4 34.4 100 23.7 53.0

Wind Speed Statistics Wind Speed Distribution

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HYDRODYNAMIC & WIND-WAVE MODELING

Sugar Island Habitat Restoration – Public Open House

FVCOM simulates hydrodynamic process including temperature effects, currents and shear stress. Current Conditions indicate very low energy zone near south end of island with higher velocities along western shoreline. SWAN model indicates maximum wind-driven wave heights at south shore are 4-5 ft

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SOILS INVESTIGATIONS

Offshore Samples Bluff Samples

Offshore samples typically fine sand, with westside being more medium sand Bluff samples and subsurface samples typically fine materials (silt + clay) Chemical analysis did not reveal any unacceptable levels

  • f contaminants

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HABITAT - FLORA

Wet-Mesic Flatwoods (from MNFI Community Abstract) Global Rank: G2G3 (Globally imperiled/Globally very rare and local) State Rank: S2 (Imperiled in the state) Extensive invasive species

  • bserved

LARGE CALIPER WHITE OAK EAST BEACH TYPICAL SCENE VERNAL POOL SOUTH WOODS SPRING BEAUTY

Sugar Island Habitat Restoration – Public Open House

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BIRDS

  • 141 total species

documented

  • Some level of

breeding observed for 43 species

  • 5 species listed as

Special Concern

  • 5 species listed as

Threatened

RED-BREASTED MERGANSER WILD TURKEY COMMON LOON EASTERN KINGBIRD TREE SWALLOW YELLOW-RUMPED WARBLER BALTIMORE ORIOLE WOODPECKER NESTS

Sugar Island Habitat Restoration – Public Open House

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FISH

Fall 2018

Round goby Hornyhead chub Rock bass Spottail shiner Gizzard shad Largemouth bass Smallmouth bass Yellow perch Logperch Common carp White bass Bowfin Emerald shiner Sand shiner White Sucker Blacknose dace Black bullhead Walleye Sheephead

Spring 2018

Emerald shiner Rock bass Blacknose shiner Spottail shiner Hornyhead chub Yellow perch White bass Sand shiner Round goby Brown bullhead White Sucker Common shiner Rainbow smelt Common carp Northern pike Trout-perch Golden redhorse

  • 26 total species documented
  • Low abundance of mainly juvenile

fish (catch-per unit effort of 5 fish/hour vs. typical of 60 fish/hour in Detroit River)

  • Spring collection dominated by

minnows & small game fish, 43% emerald shiner

  • Fall collection changed to young

game fish, fewer fish but more species

  • Marginal existing fish habitat that

can be improved considerably by restoration

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AMPHIBIANS & REPTILES

  • 8 total species

documented

  • 2 herpetofauna species

listed as Special Concern

  • Observed habitat

conditions indicate an additional 12 species may occur on the island

Sugar Island Herpetofauna Common Name Scientific Name Observed Potential Eastern American Toad Bufo [Anaxyrus] americanus americanus X Gray Treefrog Hyla versicolor/chryscocelis X Northern Spring Peeper Pseudacris crucifer crucifer X Western (Midland) Chorus Frog Pseudacris triseriata X Bullfrog Rana [Lithobates] catesbeiana X Green Frog Rana [Lithobates] clamitans melanota X Wood Frog Rana [Lithobates] sylvatica X Mudpuppy* Necturus maculosus maculosus X Red-spotted Newt Notophthalmus viridescens X Eastern Red-backed Salamander Plethodon cinereus X Northern Water Snake Nerodia sipedon sipedon X Eastern Fox Snake Pantherophis gloydi X Northern Brown Snake Storeria dekayi dekayi X Northern Red-bellied Snake Storeria occipitomaculata

  • ccipitomaculata

X Butler’s Garter Snake Thamnophis butleri X Northern Ribbon Snake Thamnophis sauritus septentrionalis X Eastern Garter Snake Thamnophis sirtalis sirtalis X Eastern Spiny Softshell Turtle Apalone spinifera spinifera X Eastern Snapping Turtle Chelydra serpentina serpentina X Midland Painted Turtle Chrysemys picta marginata X Northern Map Turtle Graptemys geographica X

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PRELIMINARY DESIGN – CROSS SECTIONS

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PRELIMINARY DESIGN

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PRELIMINARY DESIGN

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NEXT STEPS

  • Gather Community Input
  • Refine Consensus

Preliminary Design

  • Pursue additional GLRI

Funding for Implementation

Sugar Island Habitat Restoration – Public Open House