NOTICE - Updated 3/26/2020

Due to the continued health concerns raised by the COVID-19 virus the Lyon County Government Center, Public Works and the landfill will be closed to the public effective 03/30/2020 – 4/10/2020. 
Auditor/Treasurer - 507-537-6724
Driver’s License - 507-537-6727
Recorder, Birth, Death, Marriage - 507-537-6722
Assessor - 507-537-6731
Court Administration - 507-537-6734
Probation - 507-537-6746
Veteran’s Services - 507-537-6729
Human Resources, Administration - 507-537-6961
Passports - 507-532-1339
Environmental (including Household Hazardous Waste and mattress recycling)   - 507-532-8210
Landfill - 507-865-4615
Lyon County Soil & Water Conservation District - 507-532-8207 Ext. 3
Highway - 507-532-8205
Residents may also contact county staff by email. Email addresses are listed on the county website at We apologize for any inconvenience that that this may cause, and we thank you for your understanding.  These precautions are necessary to ensure the safety of our employees and to slow the spread of the virus.  For more information about COVID-19 and how to prevent the spread of the virus, please visit or
Further updates will be posted to our website and Facebook page as they become available.

Aquatic Invasive Species

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Lake Sarah (Murray County) Zebra Mussel Concern for Lyon County

AIS - Aquatic Invasive SpeciesLake Sarah in Murray County (MN) has what officials are describing as a 3-5 year old infestation of Zebra Mussels. Some believe they may have arrived on a dock that was purchased from an owner living on a lake infested with zebra mussels. Although this is speculation, this situation validates the need to Clean, Drain, & Dry ALL Boats, Docks, and Water Recreation Items.

Zebra Mussels were transported through ballasts of cargo ships through the great Lakes region, which then resulted in the transport from great lakes to nearby lakes and streams. As we see today they are still being transported by way of boats and other watercraft, docks, and waterfowl hunting equipment. These are all possible ways of transport and do not suggest that any one category is responsible.

Prevent the Spread of Aquatic Invasive Species

Please pull drain plugs, and remove all aquatic vegetation, when leaving and entering another water body.


1. CLEAN all visible aquatic plants, zebra mussels, and other prohibited invasive species from watercraft, trailers, and water-related equipment before leaving any water access or shoreland.


2. DRAIN water-related equipment (boat, ballast tanks, portable bait containers, motor) and drain bilge, livewell and bait well by removing drain plugs before leaving a water access or shoreline property. Keep drain plugs out and water-draining devices open while transporting watercraft.

Q&A – Boat draining, drain plugs, and bait container draining


3. DISPOSE of unwanted bait, including minnows, leeches, and worms, in the trash. It is illegal to release bait into a waterbody or release aquatic animals from one waterbody to another. If you want to keep your bait, you must refill the bait container with bottled or tap water.