We who are privileged to live here form a culture of care for the lake and its surroundings.
The Idaho Recreational Water Health Advisories map indicates that the Cyanobacteria-related health advisory is still in effect on Hayden Lake’s North Arm. Continue to safeguard your family – especially small children and pets – stay away from questionable water!
Panhandle Health District (PHD) issued a Health Advisory on 7/26 for Hayden Lake’s North Arm due to a Department of Environmental Quality (DEQ)-identified Harmful Algal Bloom (HAB).
July 28 Update: ISDA has tested the treated areas of Hayden Lake and found no herbicide residue. Use restrictions have been lifted. As of 7/27/24, you may draw water from the lake for ornamental plant irrigation.
The Hayden Lake Watershed Improvement District is tabling at the Wooden Boat Show at Hayden Marina on Sunday 6/29. The show runs 10:00 a.m. – 1:00 p.m.
The Idaho State Department of Agriculture (ISDA) has shared early summer updates about this season’s testing and treatment of invasive and noxious aquatic weeds on Hayden Lake:
Steve Meyer, Hayden Lake Watershed Improvement District Board Chairman, asked for your ideas to improve the Lake Debris Removal Program. Thanks for your input. Here’s the update from Steve and the HLWID Board.
Steve Meyer, Hayden Lake Watershed Improvement District Board Chairman, raises the difficult issue of abuse of the Lake Debris Removal Program and asks for your ideas to improve the program.
North Arm Investigation Committee Quarterly Update February 22, 2024 4:30 p.m. Community Library Network at
The ISDA early detection system has found quagga mussel veligers along parts of the Snake River. Further investigation will determine the scope of the spread and the best treatment and control strategies to implement. The very best method of treatment, however, is always prevention. So remember, to keep Hayden Lake and its surroundings clear of aquatic invasive species, always remember to CLEAN, DRAIN, & DRY!