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Nonprofit · EIN 43-2093200

ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT

Tax-exempt · SAINT CHARLES, IL 60175

Financials

$282K$276K2023$288K$285K2024$407K$316K2025
Revenue Expenses · by fiscal year end
Financials of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$406,962$315,837$91,125$550,600$701$549,899
December 31, 2024990$287,964$284,501$3,463$458,929$1$458,928
December 31, 2023990$282,400$276,255$6,145$504,131$48,690$455,441
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$8,701
Program service revenue
$398,235
Investment income
$0
Other revenue
$26

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$0
Other salaries and wages
$27,493
Salaries, compensation and benefits (total)
$27,493
Professional fundraising fees
$0
Legal fees
$3,392
Accounting fees
$2,446
Program services (functional)
$282,724
Management and general (functional)
$33,113

Balance sheet and other

Total assets, start of year
$458,929
Total assets, end of year
$550,600
Total liabilities, end of year
$701
Net assets, end of year
$549,899
Net assets without donor restrictions
$549,899
Gross receipts
$406,962
Employees
0
Year formed
2005
State of legal domicile
IL

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Stephen AltmanChairman
Officer
6$0
Dallas AlleyPresident
Officer
5$0
Sharon OsterbyVice President
Officer
5$0
Mary RichardsonTreasurer
Officer
4$0
Sarah HarbaughExecutive Dir.
Officer
6$0
Jenny LoewensteinSecretary
Officer
5$0
990 for the year ended December 31, 2024: 6 people
NameTitleHours / weekCompensation
Stephen AltmanChairman
Officer
6$0
Dallas AlleyPresident
Officer
5$0
Sharon OsterbyVice President
Officer
5$0
Mary RichardsonTreasurer
Officer
4$0
Sarah HarbaughExecutive Dir.
Officer
6$0
Jenny LoewensteinSecretary
Officer
5$0
990 for the year ended December 31, 2023: 6 people
NameTitleHours / weekCompensation
Sarah HarbaughExecutive Dir.
Officer
6$28,233
Stephen AltmanChairman
Officer
6$0
Dallas AlleyPresident
Officer
5$0
Sharon OsterbyVice President
Officer
5$0
Mary RichardsonTreasurer
Officer
4$0
Jenny LoewensteinSecretary
Officer
5$0

Address and contacts

Address (IRS master file)
35W749 BLUFF DR, SAINT CHARLES, IL 60175-5192
In care of
% FRENCH WETMORE
Principal officer (990 for 2025)
Dallas Alley, 35W749 Bluff Dr, Saint Charles, IL 601755192
Signed the 990
Mary Richardson, Treasurer
Return prepared by
JS White & Associates LLC

Mission

To promote public awareness of proper floodplain and stormwater management

990 for the year ended December 31, 2025

Program accomplishments

  • To promote public awareness of proper floodplain and stormwater management
    Expenses $245,778
  • To promote professional status of floodplain and stormwater management and secure all benefits resulting therefrom
    Expenses $19,261
  • To promote a liasison between individuals concered with proper floodplain and stormwater management and to encourage the exchange of ideas
    Expenses $17,685

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
43-2093200
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2006
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$550,600
Income (IRS master file)
$406,962

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$406,962$315,837$550,600XML
990December 2024$287,964$284,501$458,929XML
990December 2023$282,400$276,255$504,131XML
990December 2022$179,648$155,557$485,115IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 43-2093200).

Questions about ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT

What is the EIN of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT?
The employer identification number (EIN) of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT is 43-2093200.
Is ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2006.
Are donations to ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT?
The 990 for the year ended December 31, 2025 names Dallas Alley.
Who are the officers and directors of ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT?
The 990 for the year ended December 31, 2025 lists 6 people; 0 received compensation from the organization.
How much revenue does ILLINOIS ASSOCIATION FOR FLOODPLAIN AND STORMWATER MANAGEMENT have?
On its 990 for the year ended December 31, 2025 it reported revenue of $406,962, expenses of $315,837 and total assets of $550,600 at year end.

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