North & South Rivers Watershed
To preserve, restore and maintain and conserve the north and south rivers watershed.
North & South Rivers Watershed at a glance
- Total assets
- $4,252,696
- +36.5% vs 2024
- Revenue (2025)
- $2,098,415
- +63.9% vs 2024
- Net investment income (2025)
- $93,525
- -2.5% vs 2024
- Expenses (2025)
- $1,233,017
- +39.2% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who North & South Rivers Watershed funds
How this funder distributes its grants
Grant Size Distribution
4 grants across all recorded years
The most common grant size was under $50K: 4 grants of 4 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
In 2022 it made 4 grants totaling $31K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Cohasset Center for Student C Cohasset, MA | Test water quality and conductivity | $10,150 |
| OARS Inc Concord, MA | Test water quality and conductivity | $7,800 |
| Neponset River Watershed Asso Canton, MA | Test water quality and conductivity | $7,172 |
| Charles River Watershed Boston, MA | Test water quality and conductivity | $5,562 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $4,252,696 | $2,098,415 | $1,233,017 | — | — | $93,525 |
| 2024 | $3,115,736 | $1,279,925 | $885,561 | — | — | $95,878 |
| 2023 | $2,784,307 | $1,850,192 | $1,047,322 | — | — | $59,075 |
| 2022 | $1,926,488 | $950,506 | $810,728 | $30,684 | 4 | $12,840 |
| 2021 | $1,924,066 | $1,297,771 | $597,348 | — | — | $7,033 |
| 2020 | $1,220,232 | $734,338 | $633,138 | — | — | $40,046 |
About North & South Rivers Watershed
Based on IRS filings
North & South Rivers Watershed is a public charity focused on Environment & Animals, based in Norwell, MA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $4.3M in total assets. Net investment income was $94K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
North & South Rivers Watershed is led by John Mayfield, President on the 2025 filing; none of the 15 officers listed in 2025 report compensation.
Officers on the 2025 filing
John Mayfield
President
New on the 2025 filing
No compensation reported
Caleb Estabrooks
Director
On filings since 2020
No compensation reported
Craig Hannafin
Director
On filings since 2020
No compensation reported
Janet Fairbanks
Director
On filings since 2020
No compensation reported
Kevin Cassidy
Director
Vice President → Director, 2021
On filings since 2020
No compensation reported
Margery Parker
Director
On filings since 2020
No compensation reported
Peter Hainer
Director
President → Director, 2021
On filings since 2020
No compensation reported
Tad Beagley
Director
On filings since 2020
No compensation reported
Josh Hoch
Director
On filings since 2022
No compensation reported
Russell Landon
Director
On filings since 2022
No compensation reported
Geoffrey Gordon
Director
On filings since 2023
No compensation reported
Jocelyn Keegan
Director
On filings since 2023
No compensation reported
Jeff Demarco
Director
On filings since 2024
No compensation reported
Barbara Carney
Clerk
Secretary → Clerk, 2023
On filings since 2020
No compensation reported
Ariel Hurley
Treasurer
On filings since 2024
No compensation reported
Former officers (15)
- Former: Rick Mayfield (2020–2024) — President
- Former: Samantha Woods (2020–2024) — Executive Di
- Former: Susan Darnell (2020–2024) — Vice President
- Former: Debbie Lenahan (2023–2024) — Director
- Former: Jack Zarkauskas (2020–2023) — Treasurer
- Former: Deborah Lenahan (2020–2022) — Director
- Former: Geoff Gordon (2020–2022) — Director
- Former: Nick Vercollone (2020–2022) — Director
- Former: George Humphrey (2021–2022) — Director
- Former: Jocelyn Reardon (2022) — Director
- Former: Sally Caverly-Resign In (2022) — Director
- Former: Sally Caverly (2020–2021) — Director
- Former: Lindsay Flaherty resign (2021) — Director
- Former: Lindsey Flaherty (2020) — Director
- Former: Martha Twigg (2020) — Director · Filing note: Resigned 2020
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about North & South Rivers Watershed
How large is North & South Rivers Watershed?
North & South Rivers Watershed reported $4.3M in total assets on its 2025 IRS Form 990. Its revenue that year was $2.1M.
What is North & South Rivers Watershed?
North & South Rivers Watershed is a public charity focused on Environment & Animals, based in Norwell, MA. It holds $4.3M in total assets as of 2025.
Where does North & South Rivers Watershed operate?
North & South Rivers Watershed has awarded grants in Massachusetts.
What is North & South Rivers Watershed's EIN?
North & South Rivers Watershed's EIN (Employer Identification Number) is 23-7181992. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2025 (received by the IRS June 30, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work North & South Rivers Watershed funds
Environment & Animals Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in North & South Rivers Watershed's focus areas in our free grants database
Similar Funders
Funders with grantees in common
Charles River Watershed Association Inc
Boston, MA
The organization's mission is to protect, restore, and enhance the charles river and its watershed through science, advocacy, and the law. The organization develops science-based strategies to increase resilience, protect public health, and promote environmental equity as they confront a changing climate.
Assets
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The Charlesview Foundation
Beverly, MA
The Charlesview Foundation supports charitable organizations working in areas including community projects, early-childhood education, libraries, and teacher development. Its 2024 grants ranged from $10,000 to $15,000, primarily in Massachusetts, with additional giving in Illinois, Vermont, and Oregon. It funds only preselected organizations and does not accept unsolicited requests.
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Mystic River Watershed Association Inc
Arlington, MA
Mystic River Watershed Association funds projects in environmental restoration, water quality, climate resilience, greenways and recreation, education, and environmental justice. Its 2025 grants ranged from $6,000 to $130,000, with a median of $14,556, and went to Massachusetts recipients, primarily in the Mystic River watershed; whether it accepts unsolicited requests is not stated.
Assets
$11.1M
Grants
14
Total Given
$356K
The Spofford Foundation Inc
Wilmington, DE
The Spofford Foundation funds charitable work including community activities, health care, research, arts, education, and conservation, with recent grants mainly in New York and North Carolina and others across several states. Its 2024 grants ranged from $500 to $35,000, with a median of $2,500. It gives only to preselected organizations and does not accept unsolicited requests.
Assets
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The Fleetwing Charitable Foundation Trust
Wilmington, DE
The Fleetwing Charitable Foundation Trust supports organizations working in areas including food systems, land and cultural-resource preservation, housing, disability services, and community programs, with most of its giving in Massachusetts. In 2025, grants ranged from $1,000 to $50,000, with a median of $2,500. It funds only preselected organizations and does not accept unsolicited requests.
Assets
$3.7M
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$263K
Edwin M Johnston Jr Family Foundation
Buffalo, NY
The Edwin M Johnston Jr Family Foundation supports education, disability services, community programs, youth development, arts, and wildlife and habitat conservation. Its 2025 grants ranged from $2,500 to $37,000, with a median of $10,000, and went to organizations in multiple states, especially Massachusetts and New York. It funds only preselected charities and does not accept unsolicited requests.
Assets
$4.5M
Grants
24
Total Given
$298K
More similar funders
More Funders in Massachusetts
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