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1061:		Title:	Illinois tornadoes
		Volume/Number:	1971
		Issuing Agency:
		Description:	This report presents the climatology of Illinois tornadoes based on data from the 1916-1969 period, and offers a variety of general interest tornado facts. Illinois ranks eighth nationally in the number of tornadoes, but first in deaths and second in tornado damages. On the average, there are 10 tornadoes per year, occurring on five days. The annual average death rate from these storms is slightly over 19with an injured average of 110 people. A majority (65 percent) of Illinois tornadoes occur during March through June, with 15-21 April being the prime 7-day period. Over 40 percent occur between 1500 and 1800 CST, and 65 percent take place from 1400-2000 CST. Five of the outstanding Illinois tornado days of the 1916-1969 period are discussed in detail, including the famed Tri-State tornado of 18 March 1925, the most devastating tornado in the United States since systematic collection of tornado data began in 1916.The general information includes, among other items, basic definitions pertinent to tornadoes, safety precautions, formulation of a tornado forecast, and methods for remote detection of tornadoes.
		Date Created:	9 24 2004
		Agency ID:	C-103
		ISL ID:	000000000738 Original UID: 999999993755 FIRST WORD: Illinois

1062:		Title:	Planning a domestic ground water supply system
		Volume/Number:	1973
		Issuing Agency:
		Description:	This circular presents basic information needed to plan and develop a domestic groundwater supply. A logical step-by-step planning summary is outlined. Accepted and recommended methods for a prospective owner of a domestic well to determine his water requirements and to gather meaningful information for planning his supply are presented. Also included are brief discussions on the occurrence, movement, availability, and quality of groundwater in Illinois, and the commonly used types of wells and pumps.
		Date Created:	9 24 2004
		Agency ID:	C-116
		ISL ID:	000000000739 Original UID: 999999993773 FIRST WORD: Planning

1063:		Title:	Wells and pumping systems for domestic water supplies
		Volume/Number:	1973
		Issuing Agency:
		Description:	This circular presents basic information on wells and pumping systems used for farm and domestic groundwater supplies. It describes types of wells and their construction, development, and costs. It discusses the various types of pumps and pressure tanks, how to select them, and their costs. Suggestions on locating wells to prevent pollution and procedures for disinfecting a homewater supply system are included.
		Date Created:	9 24 2004
		Agency ID:	C-117
		ISL ID:	000000000740 Original UID: 999999993774 FIRST WORD: Wells

1064:		Title:	Water quality and treatment of domestic groundwater supplies
		Volume/Number:	1973
		Issuing Agency:
		Description:	This circular presents basic information on water quality and treatment of domestic and farm groundwater supplies. It describes tests and practices that assure a safe sanitary water quality, and discusses in detail the common minerals and natural gases that are of concern to home water supplies in Illinois. It describes water treatment procedures and equipment for disinfection, iron removal, softening, methane and hydrogen sulfide gas removal, and their costs.
		Date Created:	9 24 2004
		Agency ID:	C-118
		ISL ID:	000000000741 Original UID: 999999993775 FIRST WORD: Water

1065:		Title:	Groundwater availability in Champaign County
		Volume/Number:	1976
		Issuing Agency:
		Description:	An estimated 23.3 million gallons of water is pumped from the aquifers of Champaign County each day to satisfy industrial, municipal, domestic, and rural needs. A much larger quantity of water, perhaps as much as 90 million gallons a day (mgd), could probably be withdrawn without overdevelopment. Maps and tables indicating the probable maximum depths of wells, water levels, chemical quality, and general groundwater conditions for each water-bearing unit at specific locations are presented to serve as a guide in the development and utilization of the groundwater resources of Champaign County.
		Date Created:	5 20 2005
		Agency ID:	C-124
		ISL ID:	000000000742 Original UID: 999999993781 FIRST WORD: Groundwater

1066:		Title:	Outdoor Illinois
		Volume/Number:	vol. 14 no. 10 2006 October
		Issuing Agency:
		Description:	This magazine is a monthly publication published by the Illinois Department of Natural Resources which includes articles on outdoor activities, conservation, state park information. Articles are included in this issue on:Ferne Clyffe State Park, Rock Climbing, Fall Color Destinations, Sumac, Family Traditions, Forest Products, Persimmons, Emerald Ash Borer, and Shrews
		Date Created:	09 19 2006
		Agency ID:
		ISL ID:	000000000746 Original UID: 792 FIRST WORD: Outdoor

1067:		Title:	Clean Air Clips
		Volume/Number:	2004 Summer
		Issuing Agency:
		Description:	Feature articles cover: recycling technology hardware; automotive repair industry workshops; US EPA updates; Illinois EPA gas can exchange and lawn mower buy back events; and the Small Business Smart Energy Program
		Date Created:	08 05 2004
		Agency ID:
		ISL ID:	000000000752 Original UID: 798 FIRST WORD: Clean

1068:		Title:	Clean Air Clips
		Volume/Number:	2005 Spring
		Issuing Agency:
		Description:	Feature articles cover: update on Title 5 permitting deferral; Statute of residual risk rules; auto salvage yards and environment requirements; costs associated with not having proper air permits; statewide household hazardous waste collections; and US EPA Community Action for a Renewed Environment Program
		Date Created:	05 05 2005
		Agency ID:
		ISL ID:	000000000753 Original UID: 799 FIRST WORD: Clean

1069:		Title:	Clean Air Clips
		Volume/Number:	2004 Fall
		Issuing Agency:
		Description:	Feature articles cover: UP EPA updates; OSHA publishes hexavalent chromium proposed rule; and a notice from the State Fire Marshall
		Date Created:	11 05 2004
		Agency ID:
		ISL ID:	000000000754 Original UID: 800 FIRST WORD: Clean

1070:		Title:	Clean Air Clips
		Volume/Number:	2003 Fall
		Issuing Agency:
		Description:	Feature articles include: US EPA updates; availability of the Fiscal Year 2004 Guidelines for the Brownfields Assessment, Revolving Loan Fund; Title V permits; Illinois updates; and environmental workshops
		Date Created:	10 31 2003
		Agency ID:
		ISL ID:	000000000755 Original UID: 801 FIRST WORD: Clean

1071:		Title:	Clean Air Clips
		Volume/Number:	2002 Fall
		Issuing Agency:
		Description:	Feature articles cover: US EPA updates; Illinois updates; industrial material exchange service; ozone update; and a note from ombudsman Don Squires
		Date Created:	08 19 2003
		Agency ID:
		ISL ID:	000000000756 Original UID: 802 FIRST WORD: Clean

1072:		Title:	Clean Air Clips
		Volume/Number:	2003 Spring
		Issuing Agency:
		Description:	Feature articles cover: US EPA updates; Illinois Updates; the Governor's Pollution Prevention Awards Program; and the Environmental Justice Office in Illinois
		Date Created:	08 19 2003
		Agency ID:
		ISL ID:	000000000757 Original UID: 803 FIRST WORD: Clean

1073:		Title:	Public ground-water supplies in Illinois
		Volume/Number:	1925
		Issuing Agency:
		Description:	GENTLEMEN : Herewith I submit a report on the ground water resources of the State of Illinois and recommend that it be published as Bulletin No. 21. Since the Directors' report includes a statement of the general activities of all divisions, it has seemed advisable to discontinue the publication of an annual report of this division and to prepare instead summaries of our various investigations as they are completed. This policy was adopted with the publication of Bulletin No. 18 in May of 1922, and has been followed since that date. A portion of this material has appeared in abstract form in annual reports published prior to 1920. That material was too meager and scattered to be of practical value. In the present collected form we believe this data will be of very considerable value to the State of Illinois. Respectfully submitted, A. M. BUSWELL, Chief.
		Date Created:	9 24 2004
		Agency ID:	B-21
		ISL ID:	000000000758 Original UID: 999999992021 FIRST WORD: Public

1074:		Title:	Solar energy information and data for Illinois
		Volume/Number:	1978
		Issuing Agency:
		Description:	In the spirit of the State's solar energy focus, and to serve the needs of the publicand those involved in the design and implementation of solar energy systems, we decided to present the readily available weather and climatic data relating to 1) solar energy and 2) the demands for energy. This report is essentially a solar data compendium for Illinois. It contains a minimum of text and consists mainly of tables and graphs, largely assembled from a wide variety of publications (many not easily found).
		Date Created:	9 24 2004
		Agency ID:	C-133
		ISL ID:	000000000759 Original UID: 999999993789 FIRST WORD: Solar

1075:		Title:	Verification of the potential yield and chemical quality of the shallow dolomite aquifer in DuPage County, Illinois
		Volume/Number:	1981
		Issuing Agency:
		Description:	Because of its responsibility for allocating the Lake Michigan water which Illinois is permitted to divert from the Great Lakes Basin, the Illinois Division of Water Resources must consider alternative sources of water available to the Chicago metropolitan region. In early 1979, the Division contracted with the Illinois State Water Survey to study the shallow dolomite aquifer in DuPage County, an important alternative source, to verify its potential yield. The plan of the investigation was to analyze the effects of continually increasing pumpage, and to identify areas of existing and potential problems and areas where additional pumpage can be developed. In the summer of 1979, as part of this study, a detailed data collection program in the shallow dolomite was conducted over a 700-square-mile area, shown in figure 1. The area centered on DuPage County but also included parts of west and northwest Cook County, east Kane County, northeast Kendall County, and north Will County. It was bounded on the west by the Fox River and on the east and southeast by the Des Plaines River. Data obtained included pumpage from major water users and more than 1200 water level measurements. In addition, 282 water samples were collected for subsequent analysis.
		Date Created:	5 18 2005
		Agency ID:	C-149
		ISL ID:	000000000760 Original UID: 999999993807 FIRST WORD: Verification

1076:		Title:	Detecting drought conditions in Illinois
		Volume/Number:	1987
		Issuing Agency:
		Description:	A major study of Illinois droughts was conducted to develop a basis for quantitative assessments of drought conditions in Illinois. Such information should aid decision making related to local and state actions to ameliorate the effects of future droughts. Those who must deal directly with aspects of drought need to know 1) whether a drought is developing, 2) how severe the drought is at any given time, and 3) how long the drought will last. This report provides information to help address those questions. The report draws upon relevant results of in-depth studies of most critical aspects of drought, including the ways drought is reflected in the major components of the hydrologic cycle. Procedures are given for assessing drought presence and severity in terms of precipitation conditions, soil moisture conditions, shallow groundwater levels, and streamflows. Routine monitoring of these four conditions, coupled with the use of relationships developed in the drought study, serves to detect the onset of droughts in Illinois. Methods for determining the end of drought are not perfect, but the report discusses means by which the termination of drought can be estimated.
		Date Created:	9 24 2004
		Agency ID:	C-169
		ISL ID:	000000000761 Original UID: 999999993827 FIRST WORD: Detecting

1077:		Title:	Frequency distributions of heavy rainstorms in Illinois
		Volume/Number:	1989
		Issuing Agency:
		Description:	This publication represents a condensed version of an extensive report on the distributions of heavy rainstorms in Illinois, based on data for 61 precipitation stations operated during 1901-1983. Shown are annual frequency distributions of point rainfall for periods ranging from 5 minutes to 10 days and for recurrence intervals varying from 2 months to 100 years. Results are presented in two forms: mean relations for ten regions of approximately homogeneous precipitation climate, and statewide isohyetal maps based on the 61-station data The report also discusses the results of a special investigation pertaining to Chicago and the surrounding six counties subject to urban influences on the precipitation distribution. The final section of the report provides information on the urban influences on the two Illinois counties adjacent to St. Louis.
		Date Created:	9 24 2004
		Agency ID:	C-172
		ISL ID:	000000000762 Original UID: 999999993832 FIRST WORD: Frequency

1078:		Title:	Time distributions of heavy rainstorms in Illinois
		Volume/Number:	1990
		Issuing Agency:
		Description:	This document provides the best available in formation on the time-distribution characteristics of heavy rainstorms at a point and on small basins in Illinois and the Midwest. It is recommended for use in conjunction with Illinois State Water Survey Bulletin 70 and Circular 172 for runoff computations related to the design and operation of runoff control structures. It is also useful for post-storm assessment of individual storm events in weather modification operations. Information is presented in the form of families of curves derived for groups of storms categorized according to whether the greatest percentage of total storm rainfall occurred in the first, second, third, or fourth quarter of the storm period. The time distributions are expressed as cumulative percentages of storm rainfall and storm duration to enable comparisons between storms. The individual curves for each storm type provide estimates of the time-distribution characteristics at probability levels ranging from 10% to 90% of the total storm occurrences. Explanations are provided of how to use the results in design problems.
		Date Created:	9 24 2004
		Agency ID:	C-173
		ISL ID:	000000000763 Original UID: 999999993833 FIRST WORD: Time

1079:		Title:	100 - year rainstorms in the Midwest: design characteristics
		Volume/Number:	1993
		Issuing Agency:
		Description:	This document provides pertinent information on the spatial distribution characteristics of extremely heavy rainstorm events in Illinois and the Midwest. Relations were developed for those storms in which maximum rainfall at the center equaled or exceeded the point maximum experienced on the average of once in 100 years or longer. The study was limited to this group of storms because of existing needs for information on these extreme storm events in the design and operation of water control structures in small basins. It is recommended for use in conjunction with Illinois State Water Survey Bulletin 70, Bulletin 71 (Midwestern Climate Center Research Report 92-03), and Water Survey Circular 173 for runoff computations related to the design and operation of runoff control structures in small basins subject to extreme rainfall events. Area-depth relations were derived from information obtained through operation of several dense raingage networks, detailed field surveys and analyses of severe rainstorms in Illinois, analyses of heavy rainstorms in a six-basin hydroclimatic study, and exceptional storms recorded by the climate network of the National Weather Service in Illinois. Using data and information from these sources, curves defining spatial distributions for storms of various areal extent were derived. Results are presented in a form readily adaptable for use by hydrologists or other interested users.
		Date Created:	9 24 2004
		Agency ID:	C-176
		ISL ID:	000000000764 Original UID: 999999993836 FIRST WORD: 100

1080:		Title:	Illinois Climate Network: site descriptions, instrumentation, and data management
		Volume/Number:	1994
		Issuing Agency:
		Description:	The Illinois Climate Network (ICN) consists of 19 automated weather stations operated by the Illinois State Water Survey. Stations are located on the University of Illinois Agricultural Experiment Station Farms, the Southern Illinois University Agronomy Experiment Farms, and on community college campuses around the state. The ICN is part of the Water and Atmospheric Resources Monitoring (WARM) Network, which also collects information on soil moisture, groundwater, surface water, and suspended stream sediments. The ICN data have been used for agricultural purposes, such as for irrigation scheduling and to evaluate the progress of insect and crop development during spring and summer. The Illinois Department of Agriculture frequently requests the wind data when evaluating spray drift complaints. The ICN data are also used to assess the potential for using solar radiation and wind as alternative energy sources in Illinois. At each station a 10 meter tower equipped with weather instruments records hourly average air temperature, relative humidity, solar radiation, wind speed and direction, barometric pressure, and soil temperatures at 10 and 20 centimeters. Detailed descriptions of station sites are presented, including areal photographs of a 1,000 meter radius of each station. Hourly wind speed mean and variances were used to estimate the effect of obstructions around the weather towers on wind flow at each tower. Total hourly precipitation and hourly standard deviations of each weather variable are also recorded. The barometric pressure, including hourly maximum and minimum pressures and the time of the maxima and minima, have been recorded since early 1992. Daily data that are saved include maximum and minimum air temperature, maximum and minimum relative humidity, maximum and minimum soil temperatures, maximum wind gusts and direction, and their times of occurrence. The data are automatically retrieved from the stations once each day between midnight and 4:00 a.m. At least three times a week, a database management technician checks the data for quality control, and then the data are made available to the public on the Midwestern Climate Center's Midwestern Climate Information System.
		Date Created:	9 24 2004
		Agency ID:	C-178
		ISL ID:	000000000765 Original UID: 999999993838 FIRST WORD: Illinois

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