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TO ADVANCE KNOWLEDGE OF STREAM AND RIVER ECOSYSTEMS THROUGH INTERDISCIPLINARY RESEARCH, TO DEVELOP & COMMUNICATE NEW ECOLOGICAL IDEAS, TO PROVIDE SOLUTIONS FOR WATER RESOURCE PROBLEMS WORLDWIDE, AND TO PROMOTE PUBLIC UNDERSTANDING OF FRESHWATER ECOLOGY THROUGH EDUCATIONAL PROGRAMS, WATERSHED RESTORATION, CONSERVATION LEADERSHIP AND PROFESSIONAL SERVICE.
Source: IRS Form 990 (Tax Year 2024)
Source: IRS e-Filed Form 990 (from the IRS e-File system), Tax Year 2024
Total Revenue
▼$11.9M
Program Spending
73%
of total expenses go to program services
Total Contributions
$8.9M
Total Expenses
▼$11.7M
Total Assets
$59.1M
Total Liabilities
▼$5.5M
Net Assets
$53.6M
Officer Compensation
→$655.3K
Other Salaries
$4.1M
Investment Income
$2.8M
Fundraising
▼$25.4K
Source: USAspending.gov
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Source: Federal Audit Clearinghouse (fac.gov)
Years audited
10
Clean years
8
Material Weakness
No
Noncompliance Issues
No
| Year | Status | Financial Report | Federal Expenditurecombined across all audits filed that year | Low Risk | Accepted |
|---|---|---|---|---|---|
| 2025 | Clean | Unmodified (Clean) | $4.1M | Yes | 2026-09-09 |
| 2024 | Clean | Unmodified (Clean) | $4M | Yes | 2025-09-08 |
| 2023 | Minor Findings | Unmodified (Clean) | $2.1M | Yes | 2024-09-26 |
| 2022 | Clean | Unmodified (Clean) | $1.5M | Yes | 2023-08-23 |
| 2021 | Clean | Unmodified (Clean) | $1.2M | Yes | 2022-08-30 |
| 2020 | Clean | Unmodified (Clean) | $838.5K | No | 2021-09-23 |
| 2019 | Clean | Unmodified (Clean) | $1.5M | No | 2020-10-01 |
| 2018 | Minor Findings | Unmodified (Clean) | $1.5M | Yes | 2019-09-05 |
| 2017 | Clean | Unmodified (Clean) | $3.3M | Yes | 2018-09-23 |
| 2016 | Clean | Unmodified (Clean) | $2.8M | Yes | 2017-09-24 |
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$4.1M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$4M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$2.1M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$1.5M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$1.2M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$838.5K
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$1.5M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$1.5M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$3.3M
Financial Report
Unmodified (Clean)
Federal Expenditure, combined across all audits filed that year
$2.8M
Tax Year 2024 · Source: IRS e-Filed Form 990Schedule J available
Individuals serving as officers, directors, or trustees of the organization.
| Name | Title | Hrs/Wk | Compensation | Related Orgs | Other |
|---|
Source: IRS Publication 78, Auto-Revocation List & e-Postcard Data
Tax-deductible contributions: Yes
Deductibility code: PC
Sources: IRS e-Filed Form 990 (XML) & ProPublica Nonprofit Explorer
Scroll →
| Year | Revenue | Contributions | Expenses | Assets | Net Assets |
|---|---|---|---|---|---|
| 2024IRS e-File | $11.9M | $8.9M | $11.7M | $59.1M | $53.6M |
| 2023IRS e-File | $10.1M | $9M | $10.6M | $59.4M | $51.3M |
| 2022 | $8.6M | $7.6M | $9.5M | $54.4M | $47.9M |
| 2021 | $11.5M |
Sources: ProPublica Nonprofit Explorer & IRS e-File Index
Financial data: IRS e-Filed Form 990 (Tax Year 2024)
Leadership & compensation: IRS e-Filed Form 990, Part VII (Tax Year 2024)
Organization info: IRS Business Master File
Tax-deductibility: IRS Publication 78
| Total |
|---|
| David B Arscott Phd | President & Executive Director | 40 | $194.9K | $0 | $44.2K | $239K |
| John Pepe | Treasurer & Controller | 40 | $153.4K | $0 | $34.8K | $188.1K |
| Scott Ensign | Vice President | 40 | $125.5K | $0 | $28.4K | $153.9K |
| Susan Fitzpatrick | Secretary | 40 | $60.5K | $0 | $13.7K | $74.2K |
| Michael Bucklin | Chair | 2 | $0 | $0 | $0 | $0 |
| Rodman W Moorhead Iv | Vice Chair | 2 | $0 | $0 | $0 | $0 |
David B Arscott Phd
President & Executive Director
$239K
Hrs/Wk
40
Compensation
$194.9K
Related Orgs
$0
Other
$44.2K
John Pepe
Treasurer & Controller
$188.1K
Hrs/Wk
40
Compensation
$153.4K
Related Orgs
$0
Other
$34.8K
Scott Ensign
Vice President
$153.9K
Hrs/Wk
40
Compensation
$125.5K
Related Orgs
$0
Other
$28.4K
Susan Fitzpatrick
Secretary
$74.2K
Hrs/Wk
40
Compensation
$60.5K
Related Orgs
$0
Other
$13.7K
Michael Bucklin
Chair
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Rodman W Moorhead Iv
Vice Chair
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Highest compensated employees who are not officers or directors.
| Name | Title | Hrs/Wk | Compensation | Related Orgs | Other | Total |
|---|---|---|---|---|---|---|
| John Jackson | Senior Research Scientist | 40 | $186.9K | $0 | $42.5K | $229.3K |
| Melinda Daniels | Associate Research Scientist | 40 | $166.8K | $0 | $37.9K | $204.7K |
| Matthew Ehrhart | Director Of Watershed Research | 40 | $163.4K |
John Jackson
Senior Research Scientist
$229.3K
Hrs/Wk
40
Compensation
$186.9K
Related Orgs
$0
Other
$42.5K
Melinda Daniels
Associate Research Scientist
$204.7K
Hrs/Wk
40
Compensation
$166.8K
Related Orgs
$0
Other
$37.9K
Matthew Ehrhart
Director Of Watershed Research
$200.6K
Hrs/Wk
40
Compensation
$163.4K
Related Orgs
$0
Other
$37.1K
Members of the governing board. Board members often serve without compensation.
| Name | Title | Hrs/Wk | Compensation | Related Orgs | Other | Total |
|---|---|---|---|---|---|---|
| Bert Kerstetter | Director | 2 | $0 | $0 | $0 | $0 |
| Bryan Colket | Director | 2 | $0 | $0 | $0 | $0 |
| Christy Watkins | Director | 2 | $0 | $0 | $0 | $0 |
| Frances Abbott | Director | 2 | $0 | $0 | $0 | $0 |
| Holly Michael Ph D | Director | 2 | $0 | $0 | $0 | $0 |
| Josh Auld Phd | Director |
Bert Kerstetter
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Bryan Colket
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Christy Watkins
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
| $8M |
| $8.6M |
| $63.1M |
| $54.4M |
| 2020 | $6.7M | $5.9M | $7.4M | $57.6M | $46.1M |
| 2019 | $6.8M | $5.8M | $7.8M | $54.4M | $44.8M |
| 2018 | $10.8M | $8.2M | $8.5M | $51.6M | $42.8M |
| 2017 | $13.5M | $12.3M | $9.5M | $54.5M | $45.4M |
| 2016 | $9.1M | $7.5M | $8M | $47M | $38.6M |
| 2015 | $9.7M | $8.1M | $7.9M | $45.9M | $37.7M |
| 2014 | $9.6M | $7.5M | $6.3M | $46.8M | $38.4M |
| 2013 | $6M | $4.6M | $5.5M | $44.7M | $36.9M |
| 2012 | $6.8M | $6M | $4.7M | $41.5M | $32.7M |
| 2011 | $6M | $5.1M | $4.7M | $38.4M | $29M |
| 2021 | 990 | Data |
| 2020 | 990 | Data | PDF not yet published by IRS |
| 2019 | 990 | Data |
| 2018 | 990 | Data |
| 2017 | 990 | Data | PDF not yet published by IRS |
| 2016 | 990 | Data |
| 2015 | 990 | Data |
| 2014 | 990 | Data |
| 2013 | 990 | Data |
| 2012 | 990 | Data |
| 2011 | 990 | Data |
| 2010 | 990 | — |
| 2009 | 990 | — |
| 2008 | 990 | — |
| 2007 | 990 | — |
| 2006 | 990 | — |
| 2005 | 990 | — |
| 2004 | 990 | — |
| 2003 | 990 | — |
| 2002 | 990 | — |
| 2001 | 990 | — |
| 2000 | 990 | — |
| $0 |
| $37.1K |
| $200.6K |
| Jinjun Kan | Associate Research Scienti | 40 | $154.8K | $0 | $35.2K | $189.9K |
| Charles Dow | Director Of Information Services | 40 | $125.5K | $0 | $28.5K | $154K |
Jinjun Kan
Associate Research Scienti
$189.9K
Hrs/Wk
40
Compensation
$154.8K
Related Orgs
$0
Other
$35.2K
Charles Dow
Director Of Information Services
$154K
Hrs/Wk
40
Compensation
$125.5K
Related Orgs
$0
Other
$28.5K
| 2 |
| $0 |
| $0 |
| $0 |
| $0 |
| Lan Chi Vo Md | Director | 2 | $0 | $0 | $0 | $0 |
| Lee Clark | Director | 2 | $0 | $0 | $0 | $0 |
| Michael James | Director | 2 | $0 | $0 | $0 | $0 |
| Peter Welling | Director | 2 | $0 | $0 | $0 | $0 |
| Richard Jones | Director | 2 | $0 | $0 | $0 | $0 |
| Robert F Johnston | Director | 2 | $0 | $0 | $0 | $0 |
| Robert M Difilippo Ph D | Director | 2 | $0 | $0 | $0 | $0 |
| Seetha Coleman-Kammula Phd | Director | 2 | $0 | $0 | $0 | $0 |
| Tracey Nguyen | Director | 2 | $0 | $0 | $0 | $0 |
| Wb Dixon Stroud Jr | Director | 2 | $0 | $0 | $0 | $0 |
Frances Abbott
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Holly Michael Ph D
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Josh Auld Phd
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Lan Chi Vo Md
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Lee Clark
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Michael James
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Peter Welling
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Richard Jones
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Robert F Johnston
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Robert M Difilippo Ph D
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Seetha Coleman-Kammula Phd
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Tracey Nguyen
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0
Wb Dixon Stroud Jr
Director
$0
Hrs/Wk
2
Compensation
$0
Related Orgs
$0
Other
$0