Download - 2012 11-30 RiverFirst dnr-usace presentation

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Page 1: 2012 11-30 RiverFirst dnr-usace presentation

RiverFIRST / Scherer Site Discussions MPRB / TLS / KVA Meeting with DNR / USACE 30 November 2012

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GOAL + OBJECTIVE

The USGS Habitat Needs Assessment (HNA) summary concludes that habitats throughout all Mississippi River reaches are currently degraded and are expected to get worse in the years ahead.

ARMORED SHORELINE

POLLUTION

HISTORICAL RIVER RiverFIRST

BARGE TRAFFIC

A paradigm shift in our approach to urban waters is imperative if we expect to reverse this trend of environmental degradation. Furthermore, the USGS points out that habitat needs along the Mississippi River “are expected to nearly double by 2050 if no action is taken.”

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“ENVIRONMENTAL POOL PLANS”Prepared By: FISH AND WILDLIFE WORK GROUP : RIVER RESOURCES FORUM(USACE, MN DNR, IA DNR, WI DNR, US FISH & WILDLIFE SERVICES, NPS)

ENVIRONMENTAL POOL PLAN : PAGE II

ISLAND CREATION IN POOL 3

“The Environmental Pool Plans establish desired habitat conditions and identify actions to reverse the trend of reduced ecological integrity. Implementation of the Environmental Pool Plans will begin the steps necessary to reach a more sustainable Mississippi River ecosystem.”

BENEFITS OF ISLAND CREATION- Improvements to terrestrial habitat- Restore native vegetation along stream banks- Revert river to pre-lock and dam aquatic habitat of the pools- Islands provide habitat for terrestrial species - Shorelines of islands provide nesting sites for aquatic species- Provide sheltered “beach” for public acces to river’s edge

DESIRED FUTURE HABITAT CONDITIONS- “Opportunities exist for improving aquatic habitat above St. Anthony

Falls by restoring historic rapids, improving connectivity of a small stream and side channel, and building a string of small islands

from Boom Island park upstream to the head of navigation.”- The adjacent graph shows that we are in a critical time period for action

STATE RULE 6115.0191 : Subpart 6

CURRENT RIVER CONDITION- Lack of Vegetative / Terestrial Habitat- Minimal Public access to River shore - Existing wetlands are becoming less productive due to sedimentation - Loss of islands caused water flow to become “sheet flow”

which reduce flow and diversity of aquatic habitat

Allows fill in a public water is allowed for fish and wildlife habitat improvement. The specific language of the subpart is:

Subp. 6. Fish and wildlife habitat. Filling to restore or improve fish and wildlife habitat, except for filling in designated trout streams, shall be permitted provided plans are submitted showing the nature and degree of habitat to be benefited, and the project will not create other adverse effects such as flooding, erosion, sedimentation, or navigational obstructions.

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RIVER HABITAT SYSTEM CONNECTIVITY

GREAT HERON ROOKERY

MISSISSIPPI RIVERGORGE WOODLANDS

NEW ROOKERYISLANDS / COLONIES

SCHERER PARK

LORING PARK

LAKE CALHOUN

LAKE HARRIET

LAKE OF THE ISLES

MISSING LINK

SCHERER PARK

NICOLLET ISLAND

LORING PARK

LOGAN PARK

FARVIEW PARK

ST ANTHONY PARK

BOTTINEAU FIELD

JIM LUPIENT WATER PARK

BOOM ISLAND PARK

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1/4 mile

0.15 mile

1/2 mile

0.3 mile

1 mile

0.6 mile

MISSISSIPPI RIVER ISLANDSSCENIC NATURAL AREAS

MISSING LINK IN UPPER MISSISSIPPI RIVER HABITAT

FLOODPLAIN

SHORELAND

MPRB PARKS

HARD EDGE / RIPRAP CONDITION

WETLAND / EXISTING HABITAT

Source - Minneapolis Zoning Plates / Aerial Research

GRAND ROUNDS

URBAN CORE OPEN SPACE CORRIDOR

PROPOSED HABITAT NODES

ARMORED RIVERBANK EDGE / RIPRAP

EXISTING HABITAT

MIGRATORY FLYWAY

(Oak Forest, Lowland Hardwood Forest, Wet Meadow)

M W M O E c o l o g i c a l l y S i g n i f i c a n t A r e a sHennepin County Dept of Environmental Services

SCHERER PARK SITE CONNECTIVITY

PROPOSED WETLANDS

BASSETT CREEK MOUTH

CEDAR LAKE

NORTH MISSISSIPPI REGIONAL PARK

MARSHALL TERRACE PARK

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FLOODPLAIN

SHORELAND

MPRB PARKS

HARD EDGE / RIPRAP CONDITION

WETLAND / EXISTING HABITAT

Source - Minneapolis Zoning Plates / Aerial Research

EXISTING DEGRADED RIVER EDGE CONDITIONS

SCHERER PARK SITE

LOGAN PARK

BOOM ISLAND PARK

RIP RAP EDGE / SHEET PILING AT SCHERER SITE Lack of habitat formationDenies public access to river’s edgeBarrier to Interacting with river

ROAD / SHEET PILING WALL RIP RAP / OUTFALL PIPE Degraded habitat No water treatment prior to release

HANGING OUTFALLSRunoff / Sedimentation into river

Runoff / Sedimentation into river

NICOLLET ISLAND

ST ANTHONY PARK

BOTTINEAU FIELD

MARSHALL TERRACE PARK

GLUEK PARK

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Before 1892 - 1965 : HALL’S ISLAND INTACT

1938 Aerial 2010 Aerial

1966-2010 : SCHERER INDUSTRIAL USE PROPOSED PLAN

HISTORY OF SITE - AERIALS

Island Provides Backchannel HabitatWetland Habitat along Western BankAccess to River EdgeNarrower Navigation ChannelMigration Stopping Point along Mississippi Flyway

River WidenedSite PavedHeavy Industrial UseNo Access to River EdgeStormwater Runoff

Riprap Armored EdgesSheet PilesHarsh connection to River

Improve Biodiversity OpportunitiesCreate Softer Connection to WaterProvide Migratory Flyway Stopover within Urban CorridorMaintain Existing Navigation Channel

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SCHERER SITE-1938 HALL’S ISLAND LOCATION

Proposed ChannelMean Water 798’

Flooded Wetland1966-Present

Proposed BackchannelMean Water 798’

Proposed Shoreline (798’)

9’ Dredge Channel

Existing Shoreline (798’)

Historic Shoreline (1892-1964)

Protected Backchannel Habitat

HI

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HI

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H

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L’

S

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LA

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NG

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150 FT

L E G E N DHistoric / Existing / Proposed Shoreline

H A L L ’ S I S L A N D H I S T O R Y

Hall’s Island was the northenmost of a series of islands (including Nicollet Island, and Boom Island) which lined the eastern bank of the Mississippi River. Historic maps and city surveys locate the island dating back to the earliest reliable mapping in 1892.

The 3-acre island was the most expensive real-estate in Minneapolis. In 1963 the Island was sold to Scherer Brothers Lumber for $95,000.

By 1966 the lumber company had filled the backchannel.This provided unobstructed access to the main river navigation channel.

0 50’ 100’ 200’

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00 50’50’ 100’100’ 200’200’

HALL’S ISLAND REVISIONS

Eliminate Introduction of New Upland HabitatWiden Mouth / Improve VelocityReduction of Sedimentation DepositionWiden BackchannelRemove PoolLimit Trail / Human Impact on IslandDo Not Affect Navigation Channel

Introduction of New Upland HabitatNarrow Backchannel MouthOpportunities for Sedimentation DepositionRecreational Swimming PoolHeavy Human Impacts on IslandSteep Banks / Hard EdgesDo Not Affect Navigation Channel

HIGHLIGHTS HIGHLIGHTS

EX

IS

TI

NG

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798’ : Mean Water 798’ : Mean Water

800’ 800’

802’ : High Water 802’ : High Water

804’ 804’

806’ 806’

808’ : 100yr Flood 808’ : 100yr Flood

810 810

815812’ 812’

814’ 814’

815’ 815’

EXISTING SHORELINE

EXISTING SHORELINE

WIDENED BACKCHANNEL

PEDESTRIAN TRAIL

SWIMMING POOL

PEDESTRIAN TRAIL

L E G E N DELEVATIONS

L E G E N DELEVATIONS

ORIGINAL PROPOSAL CURRENT PROPOSAL

810

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FLOOD ANALYSIS798’ : Mean Water 802 ’ : High Water 808’ : 100yr Flood

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808’

808’

808’

808’

Live Stake

Live Stake

Live Stake

0

00

4’

555000’

8’

100’

16’

200’

32’

Toe Splash

Fascine BundleBrush Mattress

Boulder

Fascine Bundle

802’

802’

802’

802’

798’

798’

798’

798’

CONDITION 1

CONDITION 2

CONDITION 3

CONDITION 4

Emergent VegetationArrowhead, Spike Rush, Burr Reed, Cup Plant, Sweet Flag, Blue Joint Grass

Live Stakes / Fascines / Brush Mattresses / Imbricated Boulders

0-2 FPS

4-9 FPS

3-5 FPS

6-8 FPS

Live Stakes

Live Stakes & Fascines

L E G E N DEdge Conditions

EDGE CONDITION TREATMENTSSHORELINE RESPONSE TO ALLOWABLE WATER VELOCITIES

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HABITAT CROSS SECTIONSCONTRIBUTE TO MORE DIVERSE VEGETATIVE ZONES ALONG WATER’S EDGE

FLOODPLAIN FOREST - ZONE A

MISSISSIPPIRIVER

FLOODPLAIN FOREST

XERIC PRAIRIE

MESIC PRAIRIE

WETPRAIRIE BACKCHANNEL

WET PRAIRIEBACKCHANNEL

HackberrySwamp White OakCatalpaCottonwoodKentucky Coffee Tree

Including:Snags for Woodpeckers / FlickersBrush piles for Prothonotary Warblers

JunegrassLittle BluestemSideoats and Blue GrammaCompass PlantPrairie Clovers

Indian Cord GrassCup PlantBig Bluestem

Joe Pye WeedCup PlantSwitch GrassPrairie Cord Grass

Joe Pye WeedCup PlantSwitch GrassPrairie Cord Grass

Established vegetation provides bank stability which alleviate the erosive stresses caused by river navigation and wave forces.

A multitude of rushes, sedges, and grasses popu-late this shallow water zone while providing ref-uge habitat for the river’s wildlife inhabitants. This backchannel habitat teams with insects, reptiles, and fish

Erosive waves and high water velocities are con-fined to the navigation channel. This protected shoreline has a gradual slope and allows humans and animals to interact with the water’s edge.

EMERGENT HABITAT - ZONE B

RIVER

TYPICAL SPECIES TYPICAL SPECIESTYPICAL SPECIES

ISLANDBACKCHANNEL

SCHERER PARK

WET PRAIRIE HABITAT - ZONE C

0 16’ 32’ 64’ 128’

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HABITAT ZONESVEGETATION DIVERSITY

2. Xeric Prairie

1. Floodplain Forest

Floodplain Forest

Floodplain Forest

Xeric Prarie

Wet Prarie

Deep-rooted Mesic Prarie

3. Wet Prairie

4. Deep-rooted Mesic Prairie

Kentucky Coffee Tree(Gymnocladus dioicus)

Swamp White Oak(Quercus bicolor)

Indian Cord Grass(Sorghastrum nutans)

Joe Pye Weed(Eutrochium)

Cup Plant(Silphium perfoliatum)

Cup Plant(Silphium perfoliatum)

Big Bluestem(Andropogon gerardii)

Switchgrass(Panicum virgatum)

Prairie Cord Grass(Spartina pectinata)

Little Bluestem(Schizachyrium scoparium)

Prairie Junegrass(Koeleria cristata)

Side Oats Grama(Bouteloua curtipendula)

Blue Gramma (Bouteloua gracilis)

Compass Plant(Silphium laciniatum)

Purple Prairie Clovers(Dalea purpurea)

Hackberry Tree(Celtis Ulmaceae)

Cottonwood (Populus deltoides) with snags for Woodpeckers

Brush Piles for Flickers and Prothonotary Warblers

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p l y m o u t h b r i d g e

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BEAVEROTTER

BEAVEROTTER

BEAVEROTTER

BLANDING TURTLE

FISH / MUSSELS

FISH / MUSSELS

BIRDS

BIRDS

BIRDS

LANDINGGNBLANATURTLE TL

BEAVERERAVBOTTEREOTO

FISH / MUSSEFISSHH // MMUSSE

ISH / MUSSELSSSFIFIS

Cotton Wood with snags for Birds

BIRDSBB SSRDSR SSSS

BIRDSRDBB SSS

BIRDSRDSSSBI

Brush Piles and Standing Snags

Boulders along Main Channel /

Bluegill White Bass Fathead Minnow Walleye

2. Mammals / Reptiles

1. Birds

3. Macro Invertebrates / Insects / Pollinators

4. Fish

Osprey

Northern Pike Black Crappie

Otter(River and Back Channel)

Tiger Salamander(Back Channel/Sandy Beach)

Beaver(River and Back Channel)

Mayfly(Back Channel)

Dragon Fly(Back Channel)

Caddisfly(Back Channel)

Karner Blue Butterfly (Xeric Prairie)

Mason Bees(Throughout Site)

Honey Bees(Throughout Site)

Hover Bees Burrowing Bees

Blandings Turtle(Back Channel/Sandy Beach)

Warbles ThrushesBald Eagles

HABITAT ZONESISLAND HABITAT AND STRUCTURE

LANN

DSSSSSSSS

Blandings Turtle Beach

Root Wad

Root Wad

Root Wad

Lofting Logs for Blandings Turtle

Brush Piles and Standing Snags

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AVEEAVEE2

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4

BEAVERAVEBEOTTERTER

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OTTEROTTOTTERTTR

Mussels

p l y m o u t h b r i d g e

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TOPOGRAPHIC COMPARISONSEXISTING VS. PROPOSED EDGE CONDITION

EXISTING EDGE CONDITION

EXISTING EDGE CONDITION

EXISTING EDGE CONDITION

808’

808’

808’

821’

816’

802’

802’

802’

798’

798’

798’

PROPOSED BACKCHANNEL

PROPOSED BACKCHANNEL

PROPOSED BACKCHANNEL

SECTION A - A’

A

B

C

B’

C’

A’

SECTION B - B’

SECTION C - C’

000

0

00

16’

16’

16’16

32’

32’

32’32

64444’

64’

64’64

128’

’128

28’122812

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M I S S I S S I P P I R I V E R

H A L L ’ S I S L A N D

B A C K C H A N N E L

SECTIONS

808’

808’809.5’

Bottom of Bridge

100 yr Flood

High Water

WILDLIFE CROSSING

Mean Water

Bottom of Bridge816’

808’

802’

802’

802’

798’

798’

798’

SECTION D - D’

SECTION E - E’

SECTION F - F’

DD’

E

F

F’

E’

LL

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BIODIVERSITY CONCEPT DIAGRAMCREATE UNIQUE HABITAT ZONES ALONG ECOLOGICALLY IMPOVERISHED STRETCH OF MISSISSIPPI RIVER

E L E V A T E D

T R A I L

E M E R G E N T WE T L A N D S

F L O O D P L A I N F O R E S T

O S P R E Y N E S T

B L A N D I N G S

B E A C H

A QU

A T I C

S HE L F

SC

HE

RE

R B

AN

K

H A L L’ S I S L A N D S H O R E L I N E7 9 8 ’

7 9 8 ’

8 0 2 ’

7 9 8 ’

7 9 8 ’

BACKCHANNEL HABITAT

MISSISSIPPI RIVER

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