Nonprofit · EIN 81-1641673
THUNDER BAY RIVER CENTER INC
Tax-exempt · ALPENA, MI 49707
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $16,494 | $3,039 | $13,455 | $342,738 | – | $342,738 |
| December 31, 2024 | 990-EZ | $14,951 | $4,313 | $10,638 | $329,527 | – | $329,527 |
| December 31, 2023 | 990-EZ | $39,394 | $4,817 | $34,577 | $319,713 | – | $319,713 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $2,202
- Investment income
- $13,142
- Net income from fundraising events
- $1,150
Expenses
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $1,200
- Other expenses
- $1,839
- Program services (functional)
- $1,746
Balance sheet and other
- Total assets, start of year
- $329,529
- Total assets, end of year
- $342,738
- Total liabilities, end of year
- –
- Net assets, end of year
- $342,738
- Cash, savings and investments
- $138,541
- Gross receipts
- $24,506
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM HAASE | TREASURER | 2 | $0 |
| DAN MITCHEL | VICE CHAIR | 2 | $0 |
| BEVERLY BODEM | DIRECTOR | 1 | $0 |
| BRIAN BARTOSH | DIRECTOR | 1 | $0 |
| KAROL WALCHAK | SECRETARY | 2 | $0 |
| JUDY KALMANEK | CHAIR | 2 | $0 |
| STEFFEN MANTLO | DIRECTOR | 1 | $0 |
| MONTIEL BIRMINGHAM | DIRECTOR | 1 | $0 |
| MAISY WHEATON | DIRECTOR | 1 | $0 |
| KEVIN FISHER | DIRECTOR | 1 | $0 |
990-EZ for the year ended December 31, 2024: 10 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM HAASE | TREASURER | 2 | $0 |
| DAN MITCHEL | VICE CHAIR | 2 | $0 |
| BEVERLY BODEM | DIRECTOR | 1 | $0 |
| BRIAN BARTOSH | DIRECTOR | 1 | $0 |
| KAROL WALCHAK | SECRETARY | 2 | $0 |
| JUDY KALMANEK | CHAIR | 2 | $0 |
| STEFFEN MANTLO | DIRECTOR | 1 | $0 |
| MONTIEL BIRMINGHAM | DIRECTOR | 1 | $0 |
| MAISY WHEATON | DIRECTOR | 1 | $0 |
| KEVIN FISHER | DIRECTOR | 1 | $0 |
990-EZ for the year ended December 31, 2023: 11 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM HAASE | TREASURER | 2 | $0 |
| DAN MITCHEL | VICE CHAIR | 2 | $0 |
| BEVERLY BODEM | DIRECTOR | 1 | $0 |
| BRIAN BARTOSH | DIRECTOR | 1 | $0 |
| CHRIS POWLEY | SECRETARY | 2 | $0 |
| GLENN TAYLOR | DIRECTOR | 1 | $0 |
| JUDY KALMANEK | CHAIR | 2 | $0 |
| STEFFEN MANTLO | DIRECTOR | 1 | $0 |
| LYDIA THOMSON | DIRECTOR | 1 | $0 |
| MONTIEL BIRMINGHAM | DIRECTOR | 1 | $0 |
| MAISY WHEATON | DIRECTOR | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 208 N FIRST AVE, ALPENA, MI 49707-2864
- Mailing address (990-N for 2018)
- 176 Long Rapids Rd, Alpena MI 49707
- Principal officer (990-N for 2018)
- Roger Witherbee, 176 Long Rapids Rd, Alpena MI 49707
- Signed the 990-EZ
- JUDY KALMANEK, CHAIR
- Phone
- (616) 527-0419
- Return prepared by
- BOLDREY SENCHUK ROULEAU & WILLIAMS CPAS
Mission
THE MISSION OF THE THUNDER BAY RIVER CENTER IS TO PRESERVE, PROTECT & INTERPRET THE THUNDER BAY RIVER WATERSHED. THE RIVER CENTER AIMS TO PROMOTE THE ECONOMIC VITALITY & ECOLOGICAL INTEGRITY OF THE THUNDER BAY RIVER WATERSHED'S FIVE COUNTIES (ALCONA, ALPENA, MONTMORENCY, OSCODA, PRESQUE ISLE) THROUGH EDUCATION, RESEARCH & ENVIRONMENTAL STEWARDSHIP. IT IS THE GUARDIAN OF THE THUNDER BAY RIVER WATERSHED, A CENTER FOR RESEARCH, AN INSTITUTE FOR ENVIRONMENTAL EDUCATION, A SHOWCASE FOR GREEN TECHNOLOGY, & A HUB FOR ECOLOGICALLY SUSTAINABLE OUTDOOR RECREATION. THE INTENTION IS TO CONSTRUCT A STATE OF THE ART, INTERPRETIVE NATURE CENTER THAT FLAWLESSLY PROVIDES "STEAM" (SCIENCE, TECHNOLOGY, EDUCATION, ART,AND MATH) EDUCATION FOR ALL AGES. IT IS VITAL THAT NORTHEAST MICHIGAN HAS A PLACE THAT ALLOWS PEOPLE OF ALL AGES TO CELEBRATE ITS INDUSTRIAL PAST AND LEARN ABOUT HOW HUMANS IMPACT THE LOCAL ECOSYSTEMS. THE ORGANIZATION HAS COMPLETED THE ARCHITECTURAL AND ENGINEERING PLANS FOR PHASE I(PAVILIO
Program accomplishments
- THE ORGANIZATION HAS COMPLETED THE PLANNING STAGES OF THE PLAN TO BUILD AND SUSTAIN THE RIVER CENTER. THE PLANNING STAGE CONSISTED OF SPECIAL EVENTS, PROMOTION, FUNDRAISING, FEASIBILITY STUDIES AND ARCHITECTURAL PLANNING/CONSULTATIONS. THE ORGANIZATION CONTINUES TO SPONSOR SPECIAL EVENTS AND OPPORTUNITIES TO RAISE FUNDS FOR PHASE II AS DESCRIBED IN THE MISSION STATEMENT.Expenses $1,746
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 81-1641673
- 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
- 2016
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Environment (C01)
- Assets (IRS master file)
- $342,738
- Income (IRS master file)
- $24,506
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $16,494 | $3,039 | $342,738 | IRS |
| 990-EZ | December 2024 | $14,951 | $4,313 | $329,527 | IRS |
| 990-EZ | December 2023 | $39,394 | $4,817 | $319,713 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-N for 2018 Officer: Roger Witherbee | December 31, 2018 | ≤ $50,000 receipts | – | – | e-Postcard |
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 81-1641673).
Questions about THUNDER BAY RIVER CENTER INC
- What is the EIN of THUNDER BAY RIVER CENTER INC?
- The employer identification number (EIN) of THUNDER BAY RIVER CENTER INC is 81-1641673.
- Is THUNDER BAY RIVER CENTER INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2016.
- Are donations to THUNDER BAY RIVER CENTER INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does THUNDER BAY RIVER CENTER INC file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of THUNDER BAY RIVER CENTER 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 THUNDER BAY RIVER CENTER INC last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who is the principal officer of THUNDER BAY RIVER CENTER INC?
- The 990-N for 2018 names Roger Witherbee.
- Who are the officers and directors of THUNDER BAY RIVER CENTER INC?
- The 990-EZ for the year ended December 31, 2025 lists 10 people; 0 received compensation from the organization.
- How much revenue does THUNDER BAY RIVER CENTER INC have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $16,494, expenses of $3,039 and total assets of $342,738 at year end.
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