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Nonprofit · EIN 52-2301464

ARUNDEL RIVERS FEDERATION INC

Tax-exempt · EDGEWATER, MD 21037

Financials

$2M$2.6M2023$3.5M$3.4M2024$3.5M$3.4M2025
Revenue Expenses · by fiscal year end
Financials of ARUNDEL RIVERS FEDERATION INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$3,510,892$3,390,904$119,988$2,667,562$285,980$2,381,582
December 31, 2024990$3,533,048$3,378,102$154,946$2,629,729$408,987$2,220,742
December 31, 2023990$1,961,843$2,582,864-$621,021$2,208,935$185,133$2,023,802
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$3,341,080
of which government grants
$2,220,168
Program service revenue
$28,895
Investment income
$139,580
Net gain from sales of assets
$91,705
Other revenue
$1,337

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$151,418
Other salaries and wages
$480,899
Salaries, compensation and benefits (total)
$822,274
Professional fundraising fees
$0
Accounting fees
$92,078
Occupancy
$34,467
Travel
$12,346
Depreciation
$21,210
Program services (functional)
$2,890,327
Management and general (functional)
$289,757
Fundraising (functional)
$210,820

Balance sheet and other

Total assets, start of year
$2,629,729
Total assets, end of year
$2,667,562
Total liabilities, end of year
$285,980
Net assets, end of year
$2,381,582
Land, buildings and equipment
$79,972
Publicly traded securities
$1,654,565
Net assets without donor restrictions
$1,069,770
Net assets with donor restrictions
$1,311,812
Gross receipts
$3,924,384
Employees
13
Volunteers
449
Year formed
2000
State of legal domicile
MD

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 / weekCompensationOther / benefits
MATTHEW JOHNSTONEXECUTIVE DIRECTOR
Officer
40$146,583$4,835
JENNIFER PILHOLSKIDIRECTOR OF GRANTS AND RESTORATION
Highest-paid employee
40$102,140$3,346
ROBERT OTTENHOFFCHAIR
Trustee or director, Officer
1$0$0
MARK LAIDLAWTREASURER
Trustee or director, Officer
1$0$0
CATE BOWERVICE CHAIR/ GOVERNANCE CHAIR
Trustee or director, Officer
1$0$0
SHERRY SCHILLERSECRETARY
Trustee or director, Officer
1$0$0
PAUL KALADASSOUTH ADV. CHAIR
Trustee or director, Officer
1$0$0
MELANIE HARTWIG-DAVISPOLICY COMMITTEE CHAIR
Trustee or director, Officer
1$0$0
VK HOLTZENDORFWEST/RHODE WAC CHAIR
Trustee or director, Officer
1$0$0
MIKE KRISSOFFDIRECTOR
Trustee or director
1$0$0
NANCY BOOTHDIRECTOR
Trustee or director
1$0$0
DAVID BRASHEARDIRECTOR
Trustee or director
1$0$0
HOWARD KEADIRECTOR
Trustee or director
1$0$0
BRUCE OGDENDIRECTOR
Trustee or director
1$0$0
RANDEZ HADDENDIRECTOR
Trustee or director
1$0$0
3 more people on this return
NameTitleHours / weekCompensation
CHRIS GRAAEDIRECTOR
Trustee or director
1$0
ERIC SWANSONDIRECTOR
Trustee or director
1$0
AMELIA WHITMANDIRECTOR
Trustee or director
1$0
990 for the year ended December 31, 2024: 17 people
NameTitleHours / weekCompensationOther / benefits
MATTHEW JOHNSTONEXECUTIVE DIRECTOR
Officer
40$137,000$23,470
ROBERT OTTENHOFFCHAIR
Trustee or director, Officer
1$0$0
JOHN WYSSTREASURER
Trustee or director, Officer
1$0$0
CATE BOWERVICE CHAIR
Trustee or director, Officer
1$0$0
CHRIS GRAAEDIRECTOR
Trustee or director
1$0$0
JOHN DANKOWSKIDEVELOPMENT CHAIR
Trustee or director, Officer
1$0$0
MELANIE HARTWIG-DAVISPOLICY CHAIR
Trustee or director, Officer
1$0$0
MIKE KRISSOFFDIRECTOR
Trustee or director
1$0$0
JOHN FLOODWEST/RHODE WAC CHAIR
Trustee or director, Officer
1$0$0
STONEY SIMONSDIRECTOR
Trustee or director
1$0$0
VK HOLTZENDORFSECRETARY
Trustee or director, Officer
1$0$0
PAUL KALADASSOUTH WAC CHAIR
Trustee or director, Officer
1$0$0
GREGORY ZIEGLERDIRECTOR
Trustee or director
1$0$0
DAVID BRASHEARDIRECTOR
Trustee or director
1$0$0
HOWARD KEADIRECTOR
Trustee or director
1$0$0
SHERRY SCHILLERDIRECTOR
Trustee or director
1$0$0
RANDEZ HADDENDIRECTOR
Trustee or director
1$0$0
990 for the year ended December 31, 2023: 14 people
NameTitleHours / weekCompensationOther / benefits
MATTHEW JOHNSTONEXECUTIVE DIRECTOR
Officer
40$130,000$4,415
ROBERT OTTENHOFFCHAIR
Trustee or director, Officer
1$0$0
JOHN WYSSTREASURER
Trustee or director, Officer
1$0$0
CATE BOWERVICE CHAIR
Trustee or director, Officer
1$0$0
CHRIS GRAAEDIRECTOR
Trustee or director
1$0$0
JOHN DANKOWSKIDIRECTOR
Trustee or director
1$0$0
LYNN LANGERDIRECTOR
Trustee or director, Officer
1$0$0
MIKE KRISSOFFDIRECTOR
Trustee or director
1$0$0
JOHN FLOODDIRECTOR
Trustee or director
1$0$0
STONEY SIMONSDIRECTOR
Trustee or director
1$0$0
VK HOLTZENDORFSECRETARY
Trustee or director, Officer
1$0$0
PAUL KALADASDIRECTOR
Trustee or director
1$0$0
GREG ZIEGLERDIRECTOR
Trustee or director
1$0$0
DANA COLEDIRECTOR
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
PO BOX 760, EDGEWATER, MD 21037-0760
In care of
% ERIK MICHELSEN
Principal officer (990 for 2025)
ROBERT OTTENHOFF, PO BOX 760, EDGEWATER, MD 21037
Signed the 990
MATTHEW JOHNSTON, EXECUTIVE DIRECTOR
Phone
(410) 224-3802
Return prepared by
Alta CPA GroupLLC

Mission

DEEPLY ROOTED IN THE SOUTH, WEST, AND RHODE RIVERS, ARUNDEL RIVERS FEDERATION HEALS AND PROTECTS OUR WATERWAYS AND CHAMPIONS CLEAN WATER ACROSS MARYLAND.

990 for the year ended December 31, 2025

Program accomplishments

  • THE ARUNDEL RIVERS RESTORATION PROGRAM WORKS WITH COMMUNITIES, FUNDERS, AND OTHER PARTNERS TO RESTORE OUR LAND AND WATERWAYS. THESE PROJECTS, BOTH SMALL AND LARGE IN SCALE, ACTIVELY TRAP AND FILTER POLLUTANTS FROM STORMWATER, SLOW EROSION, CREATE HABITAT FOR CREATURES IN AND AROUND OUR RIVERS AND MAKE OUR LANDS AND COMMUNITIES MORE RESILIENT.
    Expenses $2,464,923
  • AS A LICENSED MEMBER OF THE WATERKEEPER ALLIANCE, OUR SOUTH, WEST, AND RHODE RIVERKEEPER MONITORS WATER QUALITY ACROSS OUR RIVERS, ADVOCATES FOR ENVIRONMENTAL LAWS, RESPONDS TO CITIZEN COMPLAINTS ABOUT POLLUTION, AND IDENTIFIES POLLUTION SOURCES AND REMEDIES TO HEAL OUR RIVERS.
    Expenses $248,289
  • THE ARUNDEL RIVERS EDUCATION AND OUTREACH PROGRAM ENGAGES AND EDUCATES COMMUNITIES ACROSS OUR WATERSHEDS WITH A GOAL TO TAKE COMMUNITY MEMBERS FROM CURIOSITY TO AWARENESS TO ACTION. THE PROGRAM PROVIDES ENVIRONMENTAL EDUCATION TO YOUTH IN SCHOOLS, CAMPS, AND CLUBS AND ORGANIZES VOLUNTEER EFFORTS TO RESTORE OUR LANDS AND RIVERS.
    Expenses $177,115

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
52-2301464
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2001
Accounting year ends
December
Files
Form 990 or 990-EZ
Category (NTEE)
Environment (C013)
Assets (IRS master file)
$2,667,562
Income (IRS master file)
$3,924,384

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$3,510,892$3,390,904$2,667,562IRS
990December 2024$3,533,048$3,378,102$2,629,729IRS
990December 2023$1,961,843$2,582,864$2,208,935XML
990December 2022$5,459,446$4,844,253$3,141,278IRS
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 52-2301464).

Questions about ARUNDEL RIVERS FEDERATION INC

What is the EIN of ARUNDEL RIVERS FEDERATION INC?
The employer identification number (EIN) of ARUNDEL RIVERS FEDERATION INC is 52-2301464.
Is ARUNDEL RIVERS FEDERATION INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2001.
Are donations to ARUNDEL RIVERS FEDERATION INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does ARUNDEL RIVERS FEDERATION INC 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 ARUNDEL RIVERS FEDERATION INC 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 ARUNDEL RIVERS FEDERATION INC 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 ARUNDEL RIVERS FEDERATION INC?
The 990 for the year ended December 31, 2025 names ROBERT OTTENHOFF.
Who are the officers and directors of ARUNDEL RIVERS FEDERATION INC?
The 990 for the year ended December 31, 2025 lists 18 people; 2 received compensation from the organization, the highest $146,583 (MATTHEW JOHNSTON, EXECUTIVE DIRECTOR).
How much revenue does ARUNDEL RIVERS FEDERATION INC have?
On its 990 for the year ended December 31, 2025 it reported revenue of $3,510,892, expenses of $3,390,904 and total assets of $2,667,562 at year end.

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