LITTLE BEAR CREEK AND RAGING RIVER KNOTWEED CONTROL AND - - PowerPoint PPT Presentation

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Aug 01, 2023 114 likes •466 views

ISSAQUAH CREEK, LITTLE BEAR CREEK AND RAGING RIVER KNOTWEED CONTROL AND REVEGETATION Lisa Nelson Restoration Projects Manager Quick overview of our three basin-wide knotweed removal projects Summary of each projects

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ISSAQUAH CREEK, LITTLE BEAR CREEK AND RAGING RIVER KNOTWEED CONTROL AND REVEGETATION

Lisa Nelson Restoration Projects Manager

SLIDE 2

Quick overview
f our three

basin-wide knotweed removal projects

Summary of

each project’s successes and challenges

Outreach

methods

SLIDE 3

Raging River

2008

Issaquah Creek

2008

Little Bear Creek

2014

SLIDE 4

RAGING RIVER KNOTWEED REMOVAL CAMPAIGN

Important Chinook

spawning habitat

Since 2008, Grants

received total $230, 000

King Conservation District

$140,000

King County Flood Control

District WRIA 7 Cooperative Watershed Management $90,000

SLIDE 5

2016 RAGING RIVER LANDOWNER PERMISSION

128 parcels located

along creek

116 private landowners
12 DNR, King County

Parks

Permission for 70% of

these parcels

SLIDE 6

2016 RAGING RIVER TREATMENT

2008 survey revealed

32 acres infested

Today we see uniform

plants, yet are only treating 6 acres the past two years

Using G&F

Contractors, doing whole river

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RAGING RIVER NATIVE PLANT REVEGETATION

Set deliverables for native plant installation – habitat

improvement

To date, installed approximately 7,000 native plants

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RAGING RIVER KNOTWEED CAMPAIGN - SUCCESSES

Became efficient through

collaboration with King County Rivers, using G&F

King County Parks treats own

parcels

Each year, gain more

permissions

20% left of initial infested

acres

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RAGING RIVER KNOTWEED CAMPAIGN - CHALLENGES

DNR lacks funding for

knotweed control, yet these parcels or the most highly infested

Remote community, less

receptive to people on property

One year, crew over-sprayed
n handful of properties
Some landowners do not

want native plants installed

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ISSAQUAH CREEK KNOTWEED REMOVAL CAMPAIGN

Issaquah Creek Tier 1, supports Chinook, Coho and Kokanee salmon as well as steelhead trout

Since 2008, Grants received total

$412,000

Initial grant, DOE King County

administered, $50,000

KCD, $70,000
NFWF $20,000
King County WRIA 8 CWM

$100,000

DOE– National Estuary

Program (NEP) $172,000

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2016 ISSAQUAH CREEK LANDOWNER PERMISSION

300 parcels located

along creek

220 private
100 DNR, King

County Parks, City

f Issaquah
Permission for 223
f these parcels –

75%

SLIDE 12

2016 ISSAQUAH CREEK TREATMENT

Original acres

from 2008 survey = 30

2016 acres

treated 5

SLIDE 13

PLANTING

ISSAQUAH CREEK NATIVE PLANT REVEGETATION 8,400 plants installed on 20 parcels

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ISSAQUAH CREEK KNOTWEED CAMPAIGN - SUCCESSES

City of Issaquah

acquisitions

Partnership with

King County Parks

Landowner word of

mouth

Continuous new

permissions

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ISSAQUAH CREEK KNOTWEED CAMPAIGN - CHALLENGES

Banks failing, still

not interested in plants

Coordinating with
ther entities when

staff changes

Public perception-

salmon and bees

SLIDE 16

LITTLE BEAR CREEK KNOTWEED REMOVAL CAMPAIGN Tier 2, Coho and Chinook Spawning habitat

Since 2012, Grants

received total $55,000

Two rounds King

County WRIA 8 CWM

SLIDE 17

2016 LITTLE BEAR CREEK LANDOWNER PERMISSION

Only treating to King County border

32 parcels located along

creek

10 private
3 City of Woodinville,

WSDOT

20 businesses with

absentee owners

Permission for 24 of these

parcels = 75%

SLIDE 18

2016 LITTLE BEAR CREEK TREATMENT

6 acres of

knotweed surveyed

Treating about

3 acres each year

SLIDE 19

LITTLE BEAR CREEK NATIVE PLANT REVEGETATION

2016 first year of

planting

One landowner,

1,000 plants!

SLIDE 20

LITTLE BEAR CREEK KNOTWEED CAMPAIGN - SUCCESSES

Great partnership with

the City of Woodinville – Has opened the door to more restoration projects

Growing successes

with reaching absentee landowners

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LITTLE BEAR CREEK KNOTWEED CAMPAIGN - CHALLENGES

Absentee property
wners
Upstream

properties in Snohomish County aren’t being treated

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Greenway Staff places mailing label here

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Highlight negative effects of knotweed on property
Explains chemical is safe to spray over water and active ingredient only works on

plant cell growth.

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Pre-placed return address Label with PIN

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With information from the waiver, create treatment maps that illustrate permission type

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Planting Brochure

Highlighting free of

charge and choosing plants

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Illustrate options to

ease minds of blocking views while explaining “grade” of each option on habitat enhancement

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Let’s talk about CONIFERS!

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Choose your plants by flowers

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Choose your plants by berries

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Choose your plants by winter color

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