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NDSU Extension

Visit the ND Response Wildfire Recovery website for resources and assistance with any damage or loss incurred from the October 2024 fires. The website also includes resources for well-being. About Located in the Williams County Highway Complex Agriculture & Natural Resources Extension Agent: Kelly Leo Physical Address (and FedEx/UPS) Williams County Highway Complex 5246 141st...

Vector Control FAQs

Have other questions?

Is there a way to let you know that mosquitoes are bad in my area?

If you have noticed an increase in the mosquito population in your area, you can submit a Vector Control Service Request. Service Requests help us to find unknown mosquito development sites and pinpoint problematic areas.

How can I help to reduce the mosquito population in my own yard?

One of the most effective things you can do is to remove any standing water you may have on your property. This can be flower pots that hold water, baby pools, or old tires you have laying around. Source reduction is the best way to combat mosquitoes!

How do you keep track of the mosquito population?

We operate a variety of mosquito traps that are dispersed throughout the county and its municipalities. We collect these traps on a daily basis, excluding weekends and holidays. Traps are counted and the numbers of individual species are recorded. Pools of mosquitoes are then tested for the presence of harmful diseases like West Nile virus....

Mosquitoes are so bad this year! Why?

There is a very direct relationship between the amount of standing water the number of mosquitoes we have during the year. The more rainfall and flooding the more likely it will be a bad year. There are exceptions, but they are not very common.

Why doesn’t the Air Force Reserve spray every year?

Vector control treatments conducted by the U.S. Air Force Reserve (USAFR) are only a request. The USAFR has the ability cancel or change their plans with little prior notice. Spray requests are scheduled 2 years in advance. This makes targeting their arrival date very difficult. Some years all the pieces come together and others it...

I never see Vector Control out and about. Are you even treating this year?

Adulticide treatments occur near sunset when mosquitoes are most active and sprays can be the most effective. In the summertime that can mean 10 pm or later. Depending on the application method you may or may not even hear or see the vehicle. Aerial applications are conducted with either a helicopter (rural areas) or airplane...

Adulticide - Williston - 7/6/2022

UPDATE 7/5 @ 4:45 PM: The tentatively scheduled ground and aerial treatments for Wednesday, July 6th will be conducted for all Williston area spray blocks (1 - 14). Spray blocks 1 - 12 will be treated via aerial and spray blocks 13 and 14 will receive ground treatments. In response to the latest trap counts...

Williston Vector Control Treatment Update - 7/5/2022

The Williston Vector Control District has been conducting larvicide treatments since mid-May and adulticide treatments since mid-June to help keep the mosquito population at a tolerable level. However, increased moisture over the past few weeks, among other factors, has contributed to above-average populations in Williston. In response to this increase, the Williston Vector Control District...

Adulticide - Countywide - 6/30-7/1/2022

The Williston Vector Control District is tentatively scheduled to conduct the following aerial adulticide treatments: Thursday, June 30: the Epping, Grenora, and Ray spray blocks Friday, July 1: All spray blocks in the City of Williston and the Trenton spray block (updated 6/30 to include Trenton) All treatments will take place near sunset, weather and...

Adulticide - Williston - 6/29/2022

UPDATE 6/29 @ 8:00 pm Due to unfavorable conditions, tonight's ground adulticide treatment for spray blocks 1 - 4 in the City of Williston has been canceled. The previously scheduled aerial adulticide treatments for Thursday, June 30, (Epping, Grenora, and Ray) and for Friday, July 1 (all Williston area spray blocks) will still be attempted,...

CR 23 & CR 15 - Open for travel effective immediately - 6/28/2022

Effective immediately, CR 23, 102nd Ave NW, from Hwy 2 south 1 mile, and CR 15 (119th Ave NW), from Hwy 2 south 2 miles, are open for travel. Please be aware construction is still ongoing so please drive with care and watch out for workers in the area.

Adulticide - Williston - 6/21 - 6/26/2022

UPDATE 6/26 @ 6 pm Williston Vector Control will conduct aerial adulticide treatments this evening (6/26) near sunset for spray blocks 2, 3, 4, 5, 7, and 8 in the City of Williston, weather and conditions permitting. ----------------------------- UPDATE 6/25 @ 5 pm Due to unfavorable conditions, tonight's aerial adulticide treatment for spray blocks 2, 3,...

Williams County Sheriff's Office apprehends male on murder, terrorizing charges

FOR IMMEDIATE RELEASE June 21, 2022 For more information, contact: Williams County Sheriff’s Office 701-577-7700 sheriff@co.williams.nd.us Williston, N.D., (June 21, 2022) - The Williams County Sheriff’s Office received a call on June 19, 2022, regarding an incident involving a shooting in rural Williams County. Upon arrival on the scene, Deputies found that Leslie Anne...

Adulticide - Countywide - 6/15 - 6/19/2022

UPDATE 6/17/2022 @ 12 pm: Aerial and ground treatments for Williston, Ray, Grenora, Epping, and Trenton were successfully completed last night as planned! However, due to forecasted winds and conditions for the weekend, it is unlikely Williston Vector Control will be able to conduct additional treatments through Sunday. Vector Control will continue to monitor trap...

RESTRICTION UPDATE EFFECTIVE 10:00AM (CST) 6/16/2022 - 7 TON AXLE WEIGHT RESTRICTION LIFTED

EFFECTIVE 10:00AM (CST), THIS MORNING – THE 7 TON AXLE WEIGHT RESTRICTION WILL BE LIFTED AND RESTRICTIONS WILL GO BACK TO THE NORMAL POSTED RESTRICTIONS. IF YOU HAVE ANY QUESTIONS ON RESTRICTIONS, PLEASE VISIT OUR WEBSITE, WILLIAMSND.COM, AND GO TO THE COUNTY WEIGHT RESTRICTION MAP.

Williams County Parks launches online reservations for campsites at Blacktail Dam; Kota Ray Dam and Epping/Springbrook Dam coming soon

FOR IMMEDIATE RELEASE June 15, 2022 For more information, contact: Lindsey Harriman Williams County Communications Department Phone: 701-577-4557 (office) lindseyh@co.williams.nd.us Williams County Parks launches online reservations for campsites at Blacktail Dam; Kota Ray Dam and Epping/Springbrook Dam coming soon Williston, N.D., (June 15, 2022) – Following the release of an online reservation system...

Adulticide - Williston - 6/11/2022

The Williston Vector Control District is tentatively scheduled to conduct ground adulticide treatments for spray blocks 1 - 6 in Williston on Saturday, June 11th, beginning at approximately 10 pm. Please keep a distance of at least 300 ft while the trucks are spraying. Treatment will take place weather and conditions permitting. For more information...

CR 23 - ROAD CLOSURE, EFFECTIVE THURSDAY 6/9/2022

UPDATE 6/28: CR 23 (102nd Ave NW), from Hwy 2 south 1 mile to 63rd St NW, is now open for travel. Construction is still ongoing, so please drive with care and watch out for workers in the area. EFFECTIVE THURSDAY, 6/9/2022, WILLIAMS COUNTY HIGHWAY WILL BE CLOSING CR 23 (102ND AVE NW) FROM HWY...

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