Hayden Lake Watershed Improvement District

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      • Improvement District vs. Association – What’s the Difference?
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      • Improvement District vs. Association – What’s the Difference?
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      • Eurasian Watermilfoil
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      • Hayden Lake Water Quality
      • Idaho Water Quality Standards & Hayden Lake
      • The Eutrophication of Hayden Lake
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      • Hayden Lake Watershed
      • Honey Badger Project
      • English Point – a Cherished Resource
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Category: Invasive & Noxious Weeds

Invasive and Noxious plants threaten the dynamic ecosystem of the Hayden Lake Watershed. All stakeholders invest considerable time and money into managing these invaders. But there are right ways and wrong ways to do it. Learn how best to care for the aquatic plant life in Hayden Lake and join in the effort to make and keep Hayden Lake invader-free.

Second ISDA Weed Treatment of 2021

Hayden Lake has been central in the Idaho State Department of Agriculture (ISD) sites in recent weeks. Since July is the month for invasive Eurasian Watermilfoil / Hybrid Watermilfoil (EWM) to reach its nuisance stage, ISDA has worked diligently to identify infestations and treat them responsibly.

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July 22, 2021

ISDA Planning Invasive Milfoil Treatment for North Arm

The Idaho State Department of Agriculture (ISDA) is charged with managing invasive aquatic plants across Idaho. Current invaders in Hayden Lake include Curlyleaf Pondweed and Eurasian and Hybrid Milfoil. ISDA makes every effort to target these invasive weeds with the least impact on native plants or the natural ecosystem. We are grateful for their investment in Hayden Lake and their service to the Lake and its residents.

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June 29, 2021
5-19-21 Treatment Map

May 2021 Weed Treatment in the North Arm

High winds down the Hayden Lake Watershed whipped up the waters of the lake on

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May 20, 2021
Hayden Lake glinting in the sunlight, is a pristine jewel in North Idaho.

Managing Native Aquatic Plants – Part 2 of the Annual Spring Community Meeting

On April 13, the HLWID hosted the 2021 Annual Spring Community Meeting: Weeds and More. This second in a series of three posts summarizes Dr. Kim Holzer/ISDA’s presentation on managing native aquatic plants for invasive weed suppression. (Part 1: 2021 Weed Treatment Plans; Part 3: KCSO on Hayden Lake)

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May 5, 2021

Herbicide and Diver Treatments set for Aug 20-25

Idaho State Department of Agriculture will treat designated areas of Hayden Lake for Eurasian Watermilfoil (EWM) during the week of August 20-25, depending upon weather conditions.

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August 8, 2020
Hayden lake, looking north from Honeysuckle Bay

Main Lake Weed Update

It seems unfair, giving all the attention to the North Arm of the lake. The Main Body of the lake is not without its weed concerns too.

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August 7, 2020

North Arm Weed Update

Residents have raised concerns about increased weed growth on the north end of the lake. This leads us to wonder, what’s going on up there?

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August 6, 2020
Aerial view of the North Arm looking north from Henry's Point

North Arm Update

On June 9, the Association hosted an open meeting to update all on the status of the North Arm. 

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June 26, 2020
Clean Lakes - contracted applicator for ISDA

North Arm Treated with Galleon SC®

The Curly-leaf Pondweed in the North Arm has seen better days! We hope.

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May 21, 2020

Watch the 2020 Invasive Aquatic Weeds Meeting Video

On April 7, residents around Hayden Lake met with Idaho State Department of Agriculture for the third annual Invasive Aquatic Weeds Information Meeting. Jeremey Varley, ISDA Noxious Weed Manager, shared follow-up information on the 2019 weed treatment and plans for 2020 treatment.

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April 17, 2020
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News From the 'Shed

’22 Lake Debris Removal

New No-Wake Buoys Coming to Hayden Lake

2022 Lake Debris Removal Sponsored by the Improvement District

More news ...

The District

  • About the HLWID
  • HLWID – District Matters
  • Board of Directors
  • Lake Managers
  • Communication and Public Outreach
  • Monthly Meetings
Menu
  • About the HLWID
  • HLWID – District Matters
  • Board of Directors
  • Lake Managers
  • Communication and Public Outreach
  • Monthly Meetings

The Watershed

  • Blue-Green Algae
  • Citizen Science
  • HLWID
  • Lake Debris
  • Living on Hayden Lake
    • Rights, Permits, Questions, Concerns: Who to Contact
      • Invasive & Noxious Weeds
  • Recreation
  • The Watershed
  • Water Quality
Menu
  • Blue-Green Algae
  • Citizen Science
  • HLWID
  • Lake Debris
  • Living on Hayden Lake
    • Rights, Permits, Questions, Concerns: Who to Contact
      • Invasive & Noxious Weeds
  • Recreation
  • The Watershed
  • Water Quality

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Monday 4/16, 7:00 p.m.

HLWID Monthly Meeting

HLWID's Monthly Meetings will move to teleconferencing in order to ensure the health and safety of our constituents. For 4/16's meeting, dial 641-715-0861 and enter code 398963# at the prompt. This is a public meeting; all are welcome.