Spray Alerts

Current Spraying Operations:

Ground & air spraying locations, dates, and times are listed below. Maps, if available, are also attached. In response to increased adult mosquito populations, or the detection of West Nile Virus, or the detection of invasive Aedes aegypti mosquitoes, the District is preparing to conduct adult mosquito control operations in the following area(s):

  • Due to the cooler weather and a low adult mosquito population, no adult mosquito spray operations are scheduled. This notice will remain until the need for adult mosquito control is determined by our laboratory adult mosquito surveillance. 1/18/24

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Past Completed Spray Operations:

  • Ground spraying for adult mosquito control using DeltaGard® and/or Evergreen 5-25, is scheduled for the morning of Tuesday, October 24, 2023, between 3:30 a.m. and 5:30 a.m
    • Rural West Ripon: >North to Prune Rd., >South to W. Ripon Rd., >East to S. Highland Rd., >West to Austin Rd. See Map COMPLETE
    • City of Ripon: See Map COMPLET
  • Aerial spraying for adult mosquito control using Evergreen 525 Air, is scheduled for the evening of Thursday, October 19, 2023, between 6:45 p.m. and 9:00 p.m.
    • West Ripon & Rural South County including SJ River Club See Map COMPLETE
  • Aerial spraying for adult mosquito control using Dibrom, is scheduled for the evening of Thursday, October 12, 2023, between 6:45 p.m. and 8:45 p.m.
    • West Ripon & Rural South County including SJ River Club  See Map COMPLETE
  • Aerial spraying for adult mosquito control using Dibrom, is scheduled for the evening of Wednesday, October 4, 2023, between 7:00 p.m. and 9:00 p.m. or depending on weather, the evening of Thursday, October 5, 2023, between 7:00 p.m. and 9:00 p.m.
    • Delta area- Portions of Empire Tract and Terminous Tract: Delta area- Portions of Empire Tract and Terminous Tract See Map  COMPLETE
  • Ground spraying for adult mosquito control using DeltaGard® and/or Evergreen 525, is scheduled for the morning of Friday, October 6, 2023, between 3:30 a.m. and 6:30 a.m
    • Ripon Sewer: >North to Doak Rd., >South to Stanislaus County Line, >East to Stockton Ave., >West to Robert Ave. See Map COMPLETE
    • Portion of North Ripon: >North to W. Santos Ave., >South to W. Milgeo Ave., >East to Ripon Rd. and John Roos Ave. >West to Fulton Ave. and Arc Way See Map COMPLETE
    • South of Linden - Peters Area: >North to Milton Rd., >South to Dietrich Rd., >East to S. Hewitt Rd., >West to Dietrich Rd. See Map COMPLETE
    • Eastern Portion of the City of Escalon:  >North to California St., >South to Vine Ave., >East to Brook St., >West to Main St. See Map COMPLETE
    • South Escalon: >North to Roosevelt Ave., >South to Catherine Way, > East to the RXR Tracks and St. John Rd., >West to McHenry Ave. See Map COMPLETE
    • Portion of South Stockton: >North to E Jefferson St., >South to E. 9th Street, >East to U.P. RR tracks, >West to S. El Dorado St.  See Map COMPLETE
    • Rural South Ripon including Jack Tone Golf: > North to West Ripon Rd., > South to Moncure Rd & Stanislaus River, > East to S. Mohler Rd. and Robert Ave., >West to S. Frederick Ave. See Map  (Added 10/5/23) COMPLETE
  • Aerial spraying for adult mosquito control using Dibrom, is scheduled for the evening of Thursday, September 28, 2023, between 7:00 p.m. and 9:00 p.m.
    • West Ripon & Rural South County including SJ River Club: See Map COMPLETE
  • Ground spraying for adult mosquito control using Evergreen 525, is scheduled for the morning of Friday, September 29, 2023, between 5:00 a.m. and 7:30 a.m
    • Rural East Escalon: >North to Dutra Ln., >South to Hwy 120, >East to Victory Ave., >West to Henry Rd. See Map COMPLETE
  • Ground spraying for adult mosquito control using Evergreen 525, is scheduled for the morning of Wednesday, September 27, 2023, between 5:30 a.m. and 7:30 a.m
    • Portion of Rural South County - Division Rd. Area: >North to Airport Way, Division Rd. and Avenue D, >South to San Joaquin and Stanislaus Rivers, > East to Stanislaus River, >West to San Joaquin River See Map COMPLETE
  • Aerial spraying for adult mosquito control using Dibrom, is scheduled for the evening of Friday, September 22, 2023, between 7:00 p.m. and 9:00 p.m.
    • Portions of Brack Tract, Canal Ranch, and Terminous Tract: See Map COMPLETE
       
  • Ground spraying for larval mosquito control using VectoBac WDG,  is scheduled for the morning of Thursday, September 21, 2023, between 3:30 a.m. and 5:00 a.m.
    • Portion of East Manteca: >North to Northgate Dr., >South to Joseph Dr., East to N. Main St., >West to Tidewater Park See Map COMPLETE
       
  • Ground spraying for adult mosquito control using DeltaGard® and/or Evergreen 525, is scheduled for the morning of Thursday, September 21, 2023, between 3:30 a.m. and 6:30 a.m
    • Portion of Thornton Area: >North to New Hope Rd., >South to Beaver Slough, >East to Mokelumne River and Klie Rd., >West to I-5 See Map COMPLETE
    • Portion of Rural West Lodi: Guard Rd. & White Slough area west of I-5 and south of Hwy 12 See Map COMPLETE
    • East Escalon: >North to Yosemite Ave., >South to Valdapena Wy, Thompson Way, Zinfandel Dr. and Daniels Ave., >East to McHenry Ave., >West to Brennan Rd.  See Map COMPLETE
    • Portion of North Ripon: >North to W. Santos Ave., >South to W. Milgeo Ave., >East to Ripon Rd. and John Roos Ave. >West to Fulton Ave. and Arc Way See Map COMPLETE
    • Portion of South Stockton: >North to E. Munford Ave., >South to Industrial Dr.,  >East to Hwy 99, West to Pock Ln.  See Map COMPLETE
    • Rural South County including San Joaquin River Club: See Map COMPLETE
    • Portion of Rural South County- Division Rd. Area:  >North to Division Rd., >South to San Joaquin and Stanislaus Rivers, >East to Stanislaus River, >West to Two Rivers RdSee Map COMPLETE
    • Rural East Escalon: >North to Dutra Ln., >South to Hwy 120, >East to Victory Ave., >West to Henry Rd. See Map COMPLETE
       

Mosquitofish!

Available for delivery within San Joaquin County or for pickup at the District office: 7759 S. Airport Way, Stockton Ca

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West Nile Virus and
Dead Bird Hotline

(877) 968-BIRD (2473)

or online at westnile.ca.gov


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