River Management Society
Donations deductibleRiver Management Society's network
15 people2 organisationsi15 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (15). Violet dotted lines (2) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.The board
15 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 16 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.| Name | Role as filed | Since | On the board |
|---|---|---|---|
| Bob Randall | Director | 2020 | 6 yrs |
| Cannon Colegrove | Director | 2024 | 2 yrs |
| ED Fite | Director | 2023 | 3 yrs |
| Edward Sherman | Director | 2024 | 2 yrs |
| Emma Lord | Director | 2020 | 6 yrs |
| Helen Clough | Company secretary | 2020 | 6 yrs |
| James Vonesh | Director | 2024 | 2 yrs |
| Judy Culver | President | 2022 | 4 yrs |
| Kristina Rylands | Director | 2022 | 4 yrs |
| Lelia Mellen | Director | 2024 | 2 yrs |
| Nathaniel Hunt | Director | 2020 | 6 yrs |
| Rob White | Treasurer | 2020 | 6 yrs |
| Shannon Bassista | V. President | 2022 | 4 yrs |
| Steve Chesterton | Director | 2020 | 6 yrs |
| Tony Mancuso | Director | 2024 | 2 yrs |
Officers and senior leadership
1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.| Name | Title as filed | On the filings |
|---|---|---|
| Risa Shimoda | Exe. Director | since 2018 |
Pay and hours
year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.| Name | Title as filed | Hours a week | Pay from the organisation | Related organisations | Other |
|---|---|---|---|---|---|
| Risa Shimoda | Exe. Director | 40 | $74k | $7k | |
| Judy Culver | President | 3 | $0 | ||
| Helen Clough | Secretary | 16 | $0 | ||
| Shannon Bassista | V. President | 8 | $0 | ||
| Steve Chesterton | Director | 1 | $0 | ||
| Bob Randall | Director | 1 | $0 | ||
| Nathaniel Hunt | Director | 1 | $0 | ||
| Tony Mancuso | Director | 1 | $0 | ||
| Rob White | Treasurer | 4 | $0 | ||
| Emma Lord | Director | 5 | $0 | ||
| Edward Sherman | Director | 1 | $0 | ||
| Kristina Rylands | Director | 2 | $0 | ||
| James Vonesh | Director | 1 | $0 | ||
| Ed Fite | Director | 1 | $0 | ||
| Cannon Colegrove | Director | 4 | $0 | ||
| Lelia Mellen | Director | 1 | $0 | ||
| Edward Sherman | Director | 1 | $0 |
About
- Legal name
- River Management Society
- EIN
- 311297130
- Address
- 601 Hudson Ave Apt 102, Takoma Park, MD, 20912-3213
- State
- Maryland
- Mission
- Managing public rivers (as filed on the Form 990)
- Activity (NTEE)
- B60Z Education
- IRS classification
- 501(c)03 (tax-exempt under section 501(c)(3) where shown)
- Classified purpose
- Education
- Size band
- 4 (IRS master file code)
- Formed
- 1989
- Principal officer
- Risa Shimoda (as named on the Form 990)
- IRS ruling date
- 1 January 1991
- Status
- Code 01 (unconditional exemption)
- Form 990 filings on record
- 4, latest 2024
- IRS Publication 78
- PC (contributions deductible)
Most connected
Longest observed on the filings
≥6years on the filingsBob Randall
≥6years on the filingsEmma Lord
≥6years on the filingsHelen Clough
≥6years on the filingsNathaniel Hunt
Latest return
year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.- Total assets
- $153k
- Total liabilities
- $6k
- Net assets or fund balances
- $147k
- Contributions and grants received
- $269k
- Program service revenue
- $103k
- Grants and similar paid out
- $500
- Employees
- 4
Filed finances
1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.| Tax year | Total revenue | Total expenses | Surplus or deficit |
|---|---|---|---|
| 2024 | $374k | $420k | Deficit $45k |
As filed on the IRS Form 990. US dollars.