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Nonprofit · EIN 98-6008060

INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI

Tax-exempt · GROSSE PT WDS, MI 48236

Financials

$141K$148K2022$146K$87K2023$122K$106K2024
Revenue Expenses · by fiscal year end
Financials of INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
June 30, 2025990$121,700$106,217$15,483$738,896$10,758$728,138
June 30, 2024990$145,957$86,670$59,287$719,823$8,151$711,672
June 30, 2023990$140,687$148,003-$7,316$654,351$983$653,368
Financial details: 990 for the year ended June 30, 2025

Revenue

Contributions, gifts and grants
$21
Membership dues
$21
Program service revenue
$25,628
Investment income
$50,467
Royalties
$45,584
Other revenue
$45,584

Expenses

Grants and similar amounts paid
$70,831
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Program services (functional)
$70,831
Management and general (functional)
$35,386

Balance sheet and other

Total assets, start of year
$719,823
Total assets, end of year
$738,896
Total liabilities, end of year
$10,758
Net assets, end of year
$728,138
Net assets without donor restrictions
$96,218
Net assets with donor restrictions
$631,920
Gross receipts
$121,700
Employees
0
Volunteers
10
Year formed
1922
State of legal domicile
MI

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 June 30, 2025, highest compensation first.

NameTitleHours / weekCompensation
D ANGELES GONZALEZ SAGRARIOPRESIDENT
Trustee or director
7$0
DR BJORN WISSELGENERAL SECRETARY-TREASURER
Trustee or director
10$0
DR ZEYNEP ERSOYVICE PRESIDENT-GLOBAL OUTREACH
Trustee or director
2$0
DR MIHIR KULKARNIECR REPRESENTATIVE-DEVELOPING ECONO
Trustee or director
2$0
DR LENA SCHALLENBERGECR REPRESENTATIVE-GLOBAL OUTREACH
Trustee or director
2$0
DR CECILIA BAROUILLETVICE PRESIDENT-COMMUNICATION
Trustee or director
2$0
BARBARA BARTAECR REPRESENTATIVE-EDUCATION
Trustee or director
2$0
DR MERYEM BEKLIOGLUVICE PRESIDENT-DEVELOPING ECONOMIES
Trustee or director
2$0
DR MARIANA MEERHOFFVICE PRESIDENT-EDUACTION
Trustee or director
2$0
DR DAVID HAMILTONEDITOR IN CHIEF-INLAND WATERS
Officer
10$0
DR JUAN DAVID GONZALEZ TRUJILOEDITOR SILNEWS
Officer
0$0
VERONICA NAVAWEBMASTER
Key employee
0$0
JANICE FAABORGEDITOR
Key employee
0$0
990 for the year ended June 30, 2024: 13 people
NameTitleHours / weekCompensation
DR DAVID HAMILTONEDITOR IN CHIEF-INLAND WATERS
Officer
10$5,000
DR BJORN WISSELGENERAL SECRETARY-TREASURER
Trustee or director
10$2,000
DR CECILIA BAROUILLETVICE PRESIDENT-COMMUNICATION
Trustee or director
2$0
DR LENA SCHALLENBERGECR REPRESENTATIVE-GLOBAL OUT
Trustee or director
2$0
DR MARIANA MEERHOFFVICE PRESIDENT-EDUACTION
Trustee or director
2$0
DR MERYEM BEKLIOGLUVICE PRESIDENT-DEVELOPING ECO
Trustee or director
2$0
BARBARA BARTAECR REPRESENTATIVE-EDUCATION
Trustee or director
2$0
D ANGELES GONZALEZ SAGRARIOPRESIDENT
Trustee or director
7$0
DR ZEYNEP ERSOYVICE PRESIDENT-GLOBAL OUTREAC
Trustee or director
2$0
DR MIHIR KULKARNIECR REPRESENTATIVE-DEVELOPING
Trustee or director
2$0
DR JUAN DAVID GONZALEZ TRUJILOEDITOR SILNEWS
Officer
2$0
DR INES O FARRELLVICE PRESIDENT-DEVELOPING ECO
Former
2$0
DR THOMAS MEHNERPRESIDENT
Former
7$0
990 for the year ended June 30, 2023: 10 people
NameTitleHours / weekCompensation
BJORN WISSELGENERAL SECRETARY TREASURER
Trustee or director, Institutional trustee
10$0
DR JUAN DAVID GONZALEZ TRUJILLOECR REPRESENTATIVE-Communicat
Trustee or director
2$0
DR ZEYNEP ERSOYVICE PRESIDENT GLOBAL OUTREAC
Trustee or director, Institutional trustee
2$0
DR MIHIR KULKARNIECR REPRESENTATIVE-Communicat
Trustee or director, Institutional trustee
2$0
DR LENA SCHALLENGERGECR REPRESENTATIVE- Global Ou
Trustee or director, Institutional trustee
2$0
D ANGELES GONZALEZ SAGRARIOVP-EDUCATION EDUCATION
Trustee or director, Institutional trustee
2$0
DR THOMAS MEHNERPRESIDENT
Trustee or director, Institutional trustee
7$0
DRCECILIA BAROUILLETVP-COMMUNICATION COMMUNICATIO
Trustee or director
2$0
BARBARA BARTAECR REPRESENTATIVE-Education
Trustee or director
2$0
INES O FARRELLVICE PRESIDENT DEVELOPING COU
Trustee or director
2$0

Address and contacts

Address (IRS master file)
1356 FAIRHOLME RD, GROSSE PT WDS, MI 48236-2313
In care of
% DR MARIA DE LOS ANGELES GONZALEZ
Signed the 990
DR MARIA DE LOS ANGELES GONZALEZ SA, PRESIDENT
Phone
(514) 608-5593
Return prepared by
Entelyglobal Solutions LLC

Mission

OPERATION OF A SCIENTIFIC NON-PROFIT ASSOCIATION OF FRESHWATER RESEARCH FOR 946 MEMBERS IN 66 COUNTRIES INTERNATIONALLY PRIMARY FUNCTIONS ARE TO HOLD CONGRESSES AND SCIENTIFIC SUBJECT MEETINGS, AND PUBLISH SCIENTIFIC JOURNALS.

990 for the year ended June 30, 2025

Program accomplishments

  • OPERATION OF A SCIENTIFIC NON-PROFIT ASSOCIATION OF FRESHWATER RESEARCH FOR 946 MEMBERS IN 66 COUNTRIES INTERNATIONALLY PRIMARY FUNCTIONS ARE TO HOLD CONGRESSES AND SCIENTIFIC SUBJECT MEETINGS, AND PUBLISH SCIENTIFIC JOURNALS.
    Expenses $70,831 · grants $30,313

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 June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026Not due yet
2024June 30, 2025November 17, 2025990 on file
2023June 30, 2024November 15, 2024990 on file

IRS record

EIN
98-6008060
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
1977
Accounting year ends
June
Files
Form 990 or 990-EZ
Category (NTEE)
Environment (C32Z)
Assets (IRS master file)
$738,896
Income (IRS master file)
$121,700

Filing history

FormYear endedRevenueExpensesAssetsReturn
990June 2025$121,700$106,217$738,896XML
990June 2024$145,957$86,670$719,823XML
990June 2023$140,687$148,003$654,351XML
990June 2021–––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 98-6008060).

Questions about INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI

What is the EIN of INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI?
The employer identification number (EIN) of INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI is 98-6008060.
Is INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1977.
Are donations to INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI 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 INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI due?
The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended June 2025.
Who are the officers and directors of INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI?
The 990 for the year ended June 30, 2025 lists 13 people; 0 received compensation from the organization.
How much revenue does INTERNATIONAL SOCIETY OF LIMNOLOGY SOCIETAS INTERNATIONALIS LIMNOLOGI have?
On its 990 for the year ended June 30, 2025 it reported revenue of $121,700, expenses of $106,217 and total assets of $738,896 at year end.

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