Hayden Lake Watershed Improvement District

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  • Living on Hayden Lake, Noxious Weeds
  • May 20, 2021

May 2021 Weed Treatment in the North Arm

simple lakeshore image - decoration

Lake Mapping Days: April 18-22

Hayden Lake Water Quality Studies

Main body of hayden lake showing honey badger overlay with treatment types

Honey Badger Project and the Hayden Lake Watershed

lake debris build-up in Mokins Bay, 2018

2022 Lake Debris Removal Sponsored by the Improvement District

Map Hayden Lake during Community Lake Mapping Days.

Lake Mapping – “Gettin’ to the bottom of it!”

View of Hayden Lake Watershed from above the southern slopes.

2022 Community Meeting – Invasive Aquatic Weeds and More

  • Living on Hayden Lake, Noxious Weeds
  • May 20, 2021
5-19-21 Treatment Map

High winds down the Hayden Lake Watershed whipped up the waters of the lake on May 18th. This was the day Clean Lakes had scheduled to implement ISDA’s spring treatment of Curly-Leaf Pondweed in the North Arm. Knowing that such weather would churn the water, drive the Galleon SC into untargeted sections of the lake-bottom, and degrade the herbicide concentration in the weediest areas, ISDA postponed treatment. But only for a day. Clean Lakes applied Galleon SC per the plan outlined on ISDA’s Treatment Map on May 19. The North Arm of Hayden Lake is now under the following water-use restrictions:

  • Drinking-Water – There are NO RESTRICTIONS on the consumption of treated water for potable use or by livestock, pets, or other animals.
  • Recreation – There are NO RESTRICTIONS for swimming or fishing in the treated areas.
  • Turf irrigation – there are NO RESTRICTIONS for irrigating turf/lawns.
  • Non-food ornamental and broadleaved plants – DO NOT IRRIGATE ornamentals until the residue test results show levels less than five (5) parts per billion (ppb).
  • Food Crops – DO NOT IRRIGATE edible plants until test results show levels less than one (1) ppb.

ISDA will test the herbicide concentration in the water on Monday, 5/24. They will then issue a notice regarding the release or continuation of water use restrictions.

Learn more about ISDA’s weed treatment plans in 2021 from our report on the Annual Spring Community (Weed) Meeting.

Tap into ISDA’s Annual Aquatic Treatment Plans page for information regarding weed surveys and weed treatment on Hayden Lake.

Visit Clear Lakes’ Hayden Lake page for the most immediate information on treatment, water-use restrictions, and water testing results.

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lake debris build-up in Mokins Bay, 2018

2022 Lake Debris Removal Sponsored by the Improvement District

Map Hayden Lake during Community Lake Mapping Days.

Lake Mapping – “Gettin’ to the bottom of it!”

View of Hayden Lake Watershed from above the southern slopes.

2022 Community Meeting – Invasive Aquatic Weeds and More

simple lakeshore image - decoration

Lake Mapping Days: April 18-22

Hayden Lake Water Quality Studies

Main body of hayden lake showing honey badger overlay with treatment types

Honey Badger Project and the Hayden Lake Watershed

simple lakeshore image - decoration

Lake Mapping Days: April 18-22

Hayden Lake Water Quality Studies

Main body of hayden lake showing honey badger overlay with treatment types

Honey Badger Project and the Hayden Lake Watershed

  • Related Content: Living on Hayden Lake, Noxious Weeds
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About HLWID

The mission of the Hayden Lake Watershed Improvement District is to protect and enhance the water quality and the environmental quality within the watershed.

News from the 'Shed

Recent Posts
  • 2022 Lake Debris Removal Sponsored by the Improvement District
  • Lake Mapping – “Gettin’ to the bottom of it!”
  • 2022 Community Meeting – Invasive Aquatic Weeds and More
  • Give Input to Honeysuckle Boat Launch Project by Feb 11
  • FSR 437 – a Source of Sediment to Hayden Lake

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News From the 'Shed

2022 Lake Debris Removal Sponsored by the Improvement District

Lake Mapping – “Gettin’ to the bottom of it!”

2022 Community Meeting – Invasive Aquatic Weeds and More

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The District

  • About the HLWID
  • HLWID – District Matters
  • Board of Directors
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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
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    • Rights, Permits, Questions, Concerns: Who to Contact
      • Noxious Weeds
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  • Citizen Science
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  • Lake Debris
  • Living on Hayden Lake
    • Rights, Permits, Questions, Concerns: Who to Contact
      • 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.