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  • Water Survey to analyze flood risks in DeKalb County, Illinois

    Jul 6, 2023 8:00 am

    Illinois State Water Survey hydrologic and hydraulic modeling in DeKalb County, Illinois, is underway as part of a study to help local communities identify areas of high flood risk for flood mitigation planning. The first phase of the project, data collection, is anticipated to begin in July 2023 and be completed in early fall 2023. In this phase, surveyors will conduct detailed channel and bridge surveys of streams in or near the community of Sycamore.

  • Water Survey to analyze flood risks in Clinton, Fayette, Shelby, and Washington Counties, Illinois

    Mar 27, 2024 1:00 pm

    The Illinois State Water Survey (ISWS) is collecting data within the Upper, Middle, and Lower Kaskaskia River watersheds as part of a multiple-phase hydrologic and hydraulic study to help local communities identify areas of high flood risk for flood mitigation planning. 

  • Water Survey to analyze flood risks in Bureau County, Illinois

    Jun 14, 2021 4:30 pm

    Illinois State Water Survey (ISWS) hydrologic and hydraulic modeling in the Villages of Tiskilwa and Walnut (Bureau County, Illinois) is underway as part of a study to help local communities identify areas of high flood risk for flood mitigation planning.

  • Water Survey to analyze flood risks in Boone, DeKalb, Ogle, and Winnebago counties

    Jan 27, 2022 1:00 pm

    Illinois State Water Survey (ISWS) hydrologic and hydraulic modeling in Boone, DeKalb, Ogle and Winnebago Counties, Illinois is underway as part of a study to help local communities identify areas of high flood risk for flood mitigation planning.

  • Water Survey to analyze flood risks in Boone and Winnebago counties

    Mar 11, 2021 3:45 pm

    Illinois State Water Survey (ISWS) hydrologic and hydraulic modeling in Boone and Winnebago Counties, Illinois is underway as part of a study to help local communities identify areas of high flood risk for flood mitigation planning.

  • flooded river

    Water Survey to analyze flood risks along the Wabash River

    May 20, 2019 8:30 am

    The Illinois State Water Survey (announced today that new hydrologic and hydraulic modeling of the Wabash River and select tributaries is underway as part of a study to help local communities identify high flood-risk areas within the Lower Wabash and Middle Wabash-Busseron watersheds for flood mitigation planning in Illinois.

  • Water Survey to analyze flood risks along the Little Wabash River

    Nov 13, 2018 10:30 am

    The Illinois State Water Survey announced today that new hydrologic and hydraulic modeling of the Little Wabash River is underway as part of a study to help local communities identify areas of high flood risk along the Little Wabash River and its tributaries for flood mitigation planning.

  • TapTalk icon

    Water Survey team launches podcast for drinking water professionals

    Sep 9, 2021 8:15 am

    The team behind WaterOperator.org and Private Well Class is launching a new podcast to strengthen connections between the many stakeholders involved in ensuring that every American has water that is safe to drink. The first two episodes of Tap Talk: The Drinking Water in Rural America Podcast are available now! 

  • Water Survey simulation of Aug. 12 Gibson City flood

    Water Survey simulation matches progress of Gibson City flood

    Aug 24, 2021 2:45 pm

    A model simulation produced by the Illinois State Water Survey shows the progression of the flood in Gibson City from the morning to the evening of Aug. 12, 2021

  • solar eclipse

    Water Survey researchers tracked weather changes during the eclipse

    Sep 14, 2017 3:00 pm

    An Illinois State Water Survey (ISWS) team documented the eclipse at the Dixon Springs Agricultural Center in Simpson, Illinois, to learn how the atmosphere responded to rapid changes in solar radiation as the moon blocked the sun. At the same time, another team recorded climate conditions every 10 seconds at 19 Illinois locations.

  • Water Survey reports on water demand in Middle Illinois, Kankakee, and Rock River regions

    Feb 19, 2019 2:00 pm

    The Water Survey has published reports on water demand in three water supply planning regions in Illinois: the Middle Illinois (ISWS Contract Report 2018-0), Kankakee (ISWS Contract Report 2019-01), and Rock River (ISWS Contract Report 2019-02) regions.

  • Water Survey receives grant to sample wells in disadvantaged areas of Chicago

    Oct 26, 2022 9:00 am

    Evan Rea, head of the Health and Environmental Applications Laboratory (HEAL) at the Illinois State Water Survey (ISWS) at the University of Illinois Urbana-Champaign (U. of I.), was recently awarded a grant by the U. of I. Chancellor’s Office to sample private wells in the Chicago metro area. The Chancellor’s Call to Action to Address Racism & Social Injustice Research Program provides $2 million annually to U. of I. researchers to support projects that address systematic racism and social justice, law enforcement and criminal justice reform, and disparities in health and health care.

  • eclipse

    Water Survey program to monitor weather effects of the solar eclipse

    Apr 3, 2024 8:45 am

    As the solar eclipse brings a spectacular show in the sky on April 8, viewers can also follow its path online as the Water and Atmospheric Resources Monitoring (WARM) program at the Illinois State Water Survey offers real-time monitoring of changing weather conditions during the event. 

  • cropped map of Chicagoland water sources

    Water Survey maps complex web of water use in Illinois

    Nov 7, 2017 2:30 pm

    Scientists at the Illinois State Water Survey have developed an interactive map of where every community in Illinois gets its water. Sources include Lake Michigan, rivers and reservoirs, and groundwater.

  • Hideyuki Terashima, Walt Kelly, Katie Buckley, Jennifer Wilson, and Steve Wilson

    Water Survey hosts National Private Well Conference

    Jun 3, 2019 11:30 am

    The Illinois State Water Survey organized and hosted the 2nd National Private Well Conference May 21-23, 2019 in Harrisburg, Pennsylvania. There were over 120 attendees from 33 states at the event, which featured 25 presentations, a driller's panel, and a dozen 5-minute lightning talks.

  • watershed management areas map

    Water Survey helps Cook County manage stormwater

    Apr 5, 2021 11:00 am

    Experts from the Illinois State Water Survey support the Metropolitan Water Reclamation District of Greater Chicago in making informed watershed management decisions for a vast service area that includes 128 suburban communities in Cook County. 

  • Water Survey commemorates 125th anniversary

    Jan 7, 2020 1:15 pm

    A series of free half-day seminars will be offered across the state this year to commemorate the Illinois State Water Survey’s 125th anniversary. Seminars will highlight critical water, weather, and climate issues of Illinois. 

  • girl drinking water

    Water Survey analyzes home water supplies

    Jan 7, 2020 3:00 pm

    When Illinoisans with private wells have questions about their home water supply, the Water Survey’s Public Service Lab can provide answers. Our lab can analyze water from any Illinois well, checking for parameters including calcium, magnesium, iron, arsenic, manganese, sodium, hardness, total dissolved solids, alkalinity, color, turbidity, fluoride, chloride, nitrate, and sulfate. 

  • Illinois mp of water supply planning regions.

    Water Supply Planning team helps Illinois meet water needs

    May 11, 2020 9:45 am

    Due to projected growth of the population and economy, Illinois could require 20 to 50 percent more water in coming decades. Ensuring adequate and reliable supplies of clean water for all requires us to think ahead. We need to know how much water will be available, how much water we will need, what the options are for providing additional supplies, reducing demand, and what the impacts and costs will be.

    Since 2006 the Illinois Department of Natural Resources has tasked the Water Survey with leading regional water supply planning activities for 11 Illinois regions. Learn more about the team that carries out this important activity.

  • Waterfowl study helps evaluate Illinois River habitat

    Apr 13, 2012 10:00 am

    INHS Waterfowl Biologists have been monitoring restored wetlands along the Illinois River to determine if restoration efforts have been successful for waterfowl populations. Chris Young of the State Journal Register went along and documented the diving duck surveys.

  • Waterfowl numbers better than last year

    Dec 14, 2011 8:00 am

    Aerial surveys this November showed 20 times more ducks on Lake Chautauqua than during the same period last year. The Green-winged Teal made up the majority of those waterfowl, with conditions on the lake this year being favorable. INHS Waterfowl Biologist Randy Smith said, "Green-winged teal like it when the water is so shallow that they can stand up, just an inch or two deep with lots of vegetation." This year's surveys have found that Lake Chautauqua has more than one third of all the ducks at the 16 sites sampled in the Lower Mississippi River Valley.

  • Waterfowl counts higher than average

    Nov 16, 2012 8:00 am

    INHS Waterfowl Ecologist Aaron Yetter conducts weekly aerial surveys and on Nov 13 found more waterfowl than average for this time of year. Yetter counted 305,310 ducks along the Illinois River compared to the10-year average of 234,434 birds for this same week and 356,735 ducks on the Upper Mississippi River compared to the 10-year average of 226,801 birds. "It looks like we got a big push of new mallards. We also have well above average numbers of pintails, gadwalls, lesser scaup and other species," Yetter said.

  • Warm year in Illinois ends with a cold, dry December

    Jan 3, 2018 2:00 pm

    2017 was the sixth warmest year on record in Illinois with a statewide average temperature of 54.3 degrees, or 2 degrees above normal, in spite of the very cold ending to December.

  • Warm Soils Reported Throughout Illinois

    Apr 18, 2017 4:15 pm

    Soil temperatures rose steadily over the first half of April, increasing 11.5 degrees during the first 15 days. At depths of 4 inches under sod, temperatures averaged 54.9 degrees for the period, 4.4 degrees higher than the long-term average.

  • Warm Soils across Illinois in July

    Jul 18, 2017 3:00 pm

    Soil temperatures at depths of 4 inches under bare soil averaged 79.9 degrees on July 15, 2.1 degrees above the long-term average.

  • Warm October for Illinois

    Nov 2, 2016 4:45 pm

    The statewide average temperature for October was 59.8 degrees, 5.4 degrees above normal, and the on record, according to Illinois State Climatologist Jim Angel, Illinois State Water Survey, University of Illinois.

  • Warm October across Illinois Ranks among Top Ten

    Nov 7, 2007 7:30 pm

    "With temperatures in Illinois averaging 59.5 degrees, 4.8 degrees above normal, October was the 9th warmest since 1895," says State Climatologist Jim Angel of the Illinois State Water Survey (http://www.sws.uiuc.edu), a division of the Illinois Department of Natural Resources.

  • Warm November in Illinois

    Dec 3, 2010 12:30 am

    The statewide average rainfall for October was 1.4 inches, 1.5 inches below normal. This ranks as the 20th driest October on record, according to State Climatologist Jim Angel of the Illinois State Water Survey (http://www.isws.illinois.edu).

  • Warmest Year to Date for the Midwest, Near Normal August

    Sep 11, 2012 7:45 pm

    August 2012 brought relief to much of the Midwest region in the form of near-normal temperatures and much needed rainfall.  No state in the nine-state Midwest region ranked in the top 40 warmest Augusts on record, according to the Midwestern Regional Climate Center (http://mrcc.isws.illinois.edu) at the Illinois State Water Survey (ISWS).  Records date back to 1895.

  • Warmest May on record for Illinois

    Jun 1, 2018 3:30 pm

  • Warmest March on Record for the Midwest

    Apr 3, 2012 8:15 pm

    March was the warmest on record for the nine-state Midwest region, based on preliminary temperature data.  The average temperature for the region was 50.3 degrees Fahrenheit, which breaks the previous record of 46.9 degrees set over 100 years ago in 1910, according to the Midwestern Regional Climate Center (http://mrcc.isws.illinois.edu) at the Illinois State Water Survey (ISWS).

  • Warmest April on Record for Illinois

    May 3, 2010 1:15 am

    Based on preliminary data, the statewide average temperature for Illinois in April was 58.4 degrees, 6.2 degrees above normal and the warmest April on record. This beats the old record of 58.2 degrees set in 1955, according to State Climatologist Jim Angel of the Illinois State Water Survey (http://www.isws.illinois.edu).

  • ""

    Warmer, wetter winter leaves crop pest picture unclear

    Mar 3, 2020 8:00 am

    A warmer, wetter winter has caused higher than normal soil temperatures across the state, which could be helping agriculture pests survive the season.

  • two yellow prothonotary warblers perched on a branch

    Warmer springs mean more offspring for prothonotary warblers

    Dec 9, 2020 8:30 am

    Climate change contributes to gradually warming Aprils in southern Illinois, and at least one migratory bird species, the prothonotary warbler, is taking advantage of the heat. A new study analyzing 20 years of data found that the warblers start their egg-laying in southern Illinois significantly earlier in warmer springs. This increases the chances that the birds can raise two broods of offspring during the nesting season, researchers found.

  • Warmer Soil Temperatures Continue Into February and March

    Mar 11, 2012 8:00 pm

     Soil temperatures continued to rise across Illinois in February and March, according to Jennie Atkins, Water and Atmospheric Resources Monitoring (WARM) Program Manager at the Illinois State Water Survey.

  • Warmer soils this winter in Illinois could indicate healthy insect populations for spring

    Mar 5, 2021 9:00 am

    Despite the cold weather this February, winter soil temperatures averaged 1 to 2 degrees higher than the long-term averages in Illinois, indicating a greater chance of insects surviving the winter.

  • Warmer soils continue into July

    Jul 17, 2018 8:00 am

    Soils continue to be warmer than normal in mid-July, according to Jennie Atkins, Water and Atmospheric Resources Monitoring (WARM) Program manager at the Illinois State Water Survey, University of Illinois.

  • Warmer January temperatures nearly broke records

    Feb 1, 2023 5:00 pm

    Illinois temperatures were above normal in January, preliminarily ranking the month as the sixth warmest on record, according to Illinois State Climatologist Trent Ford at the University of Illinois’ Illinois State Water Survey.

  • Warmer fall temperatures don’t eliminate risk of early fall freeze

    Aug 10, 2020 1:30 pm

    Temperatures in September and October have risen for decades in the Midwest; however, early fall freeze events have occurred despite the increasing temperatures.

  • Warmer, Drier Soils in Illinois the First Half of June

    Jun 16, 2017 3:00 pm

    Soil temperatures at depths of 4 inches under sod averaged 77.7 degrees in Illinois on June 14, 4.7 degrees above the long-term average.

  • pine cones

    Warm, dry December concludes a cold, wet year

    Jan 3, 2020 8:00 am

    December temperatures were well above the long-term average across the state, breaking dozens of local daily maximum and minimum temperature records. The preliminary statewide December average temperature was 35.2 degrees, about 5 degrees above the 1981-2010 normal and the 18th warmest on record. 

  • Hail stones on the ground. Photo by Andres Siimon on Unsplash.

    Warm and dynamic March opens spring

    Apr 2, 2024 9:15 am

    March’s warmer than average temperatures are expected to continue into April, which could lead off a warm and wet spring all the way into June, according to Illinois State Climatologist Trent Ford at the University of Illinois’ Illinois State Water Survey.

  • Warm and Damp November in Illinois

    Dec 1, 2015 2:15 pm

    Illinois experienced its third wettest and tenth warmest November on record, according to Illinois State Climatologist Jim Angel, Illinois State Water Survey, University of Illinois.

  • Visit the ISWS at the 2018 Illinois State Fair!

    Jul 16, 2018 8:00 am

    Water Survey staff will be demonstrating how contamination moves through groundwater and into private wells and how well pumps work, and will provide free information on testing and maintenance of private wells, in Conservation World from August 10 through August 19.

  • microphone

    Virtual speaker series features Native scholars and leaders

    Feb 23, 2021 2:30 pm

    This spring the Illinois State Archaeological Survey (ISAS) at the University of Illinois Urbana-Champaign will hold a virtual speaker series featuring Native scholars and leaders. The Intersections of Indigenous Knowledge and Archaeology series is intended to center Indigenous voices, increase awareness of the deep Native histories of the Eastern Woodlands, and amplify the experiences and research of Indigenous scholars and leaders. 

  • Very Dry May, 8th Warmest on Record

    Jun 1, 2007 8:15 pm

    "May 2007 was the 8th warmest and 23rd driest May since 1895. Statewide May precipitation in Illinois was 2.62 inches (1.65 inches below normal), and statewide temperatures were 67.3°F degrees (4.5°F above normal). Fortunately, short-term impacts of the dry weather were minimal because of abundant soil moisture from rainfall in previous months. Timely and widespread rains across northern and central Illinois over the Memorial Day weekend also provided relief for shallow-rooted corn and soybeans in those areas," says State Climatologist Jim Angel of the Illinois State Water Survey (http://www.sws.uiuc.edu), a division of the Illinois Department of Natural Resources.

  • Vector mosquitoes detected earlier than expected

    Jun 21, 2011 8:00 am

    INHS Medical Entomologist Richard Lampman was featured on a News Channel 15 story about mosquitoes.  Because of all of the rain, the "nuisance" mosquito population is expected to be above average. The recent hot dry weather has resulted in "vector" or disease-carrying mosquito eggs being found earlier than expected this year.

  • Variation in effectiveness of RNAi treatment in western corn rootworm

    Mar 11, 2014 8:00 am

    INHS Behavioral Entomologist Joseph Spencer and his colleagues in Crop Sciences and Entomology recently released a study in the journal Pesticide Biochemistry and Physiology with findings that there is variation in the effectiveness of RNAi treatments on western corn rootworm (WCR), a major agricultural pest.

  • Kevin OBrien, Stephanie Brownstein, U.S. Secretary of Energy Jennifer M. Granholm, Susan Martinis, and Jeff Stein stand outside Abbott Power Plant

    U.S. Secretary of Energy Jennifer Granholm tours PRI carbon management projects

    Dec 10, 2021 8:30 am

    On Dec. 9, U.S. Secretary of Energy Jennifer M. Granholm toured several U of I sustainable energy projects, including PRI’s carbon capture efforts at Abbott Power Plant. During the visit she also heard about PRI's extensive work in carbon sequestration.

  • Users of data on Illinois environmental conditions will now register for access

    Feb 6, 2018 8:45 am

    Starting this month, users will be asked to register to access data on Illinois’ weather, soil, and water conditions on the University of Illinois’ Water & Atmospheric Resources Monitoring (WARM) program website. Data are still free of charge.