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California · Nonprofit

International Rivers Network

International Rivers Network (California) receives grants from 40 organizations whose IRS filings report $8,391,119 to it, the largest being ARCUS FOUNDATION ($1,525,000). 25 of them have funded it in more than one year.

$2.2M
Revenue FY2025
40
Funders on record
$8.4M
Grants received
$1.8M
Net assets
25/40 repeat funderspeak grant-dependency 98%

Against its field

International Rivers Network is better cushioned than half of the 881 environment nonprofits its size.

Operating margin7% · below the median
Months of reserve8.9mo · above the median
Revenue growth (annualized)0% · bottom quartile

this organization peer median middle 50% of peers· 881 environment nonprofits $1M–$10M, FY2025

Three funders worth looking at

Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.

See all 12 prospects and why each one surfaced →
01The organization over time

The organization over time

Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.

100 = 20172017 Revenue 100 ($2.1M) Expenses 100 ($2.1M) Net assets 100 ($1.5M)2018 Revenue 176 ($3.7M) Expenses 112 ($2.4M) Net assets 164 ($2.4M)2019 Revenue 81 ($1.7M) Expenses 115 ($2.4M) Net assets 119 ($1.7M)2020 Revenue 195 ($4.0M) Expenses 111 ($2.4M) Net assets 234 ($3.4M)2021 Revenue 66 ($1.4M) Expenses 99 ($2.1M) Net assets 176 ($2.6M)2022 Revenue 78 ($1.6M) Expenses 88 ($1.9M) Net assets 160 ($2.3M)2023 Revenue 106 ($2.2M) Expenses 89 ($1.9M) Net assets 181 ($2.6M)2024 Revenue 53 ($1.1M) Expenses 98 ($2.1M) Net assets 115 ($1.7M)2025 Revenue 103 ($2.2M) Expenses 94 ($2.0M) Net assets 126 ($1.8M)
'17'18'19'20'21'22'23'24'25
Revenue (103)Expenses (94)Net assets (126)Peer revenue range

How it's funded, over time

Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.

2017
2018
2019
2020
2021
2022
2023
2024
2025
ContributionsProgram revenueInvestmentOther

Government-grant reliance: 2021 14%. Grants only. Government contracts and fees sit inside program revenue.

99% of International Rivers Network’s revenue is contributions — more reliant on donations than three-quarters of its peers (88% for the typical peer).

This organization
Typical peer · 2,285 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 5 of the last 9 reported years ran a deficit.

$43k
17
$1.3M
18
$745k
19
$1.7M
20
$750k
21
$249k
22
$315k
23
$971k
24
$160k
25
8.9
months of
reserve
02Who funds it

Who funds it, year by year

2017 → 2023: the base narrowed from 14 funders to 11 funders, grant income fell $749k → $490k.

11 of 40 of your funders are donor-advised or pass-through sponsors (tagged DAF)21% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.

Left out of every figure on this page: $208k from one payer (the payer shares this organization's board, largest Fund for International Rivers). These are real filings, and they are not money International Rivers Network raised.

From the IRS filings of International Rivers Network’s funders (the co-funder graph). Top 30 of 40 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

How concentrated its funding is

International Rivers Network has a broad base — no single funder exceeds 18% of grant income, and it takes 4 funders to reach half.

the vertical line marks half of all grant income — 4 funders to its left

26% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund International Rivers Network.

18%
largest funder
42%
top three
~11
effective funders

Largest funder’s share by year: 2017 37% · 2018 30% · 2019 43% · 2020 60% · 2021 22% · 2022 41% · 2023 71%growing more concentrated.

“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

How long its funders stay

31% of International Rivers Network's funders are still giving 3 years after their first grant; 63% give in more than one year at all.

first grant+1y+2y+3y+4y+5y+6y

Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.

Where its funders are

International Rivers Network draws 75% of its grant income from funders outside California, across 13 states in all.

WA
MN
IL
MI
NY
MA
NV
PA
CA
VA
DE
DC
TX

In-state vs out-of-state, by year

17
18
19
20
21
22
23
California out of state home

Funder states come from each funder’s own filing. $1.7M arriving through sponsors registered in 8 statesis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

03Its place in the field

Funders to approach

Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 40 funders put you under-funded among the 400 organizations that share them.

From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.

Organizations like International Rivers Network

Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.

In California

Nationally

04Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Where the money goes

89% of spending goes to programs.

Program 89%Management 7%Fundraising 4%

Governance

7
board members
100%
independent
Conflict-of-interest policyWhistleblower policyDocument retentionBoard reviewed the 990Audited financials

Public support

39%

Share of support from the public (Schedule A) — the basis for its public-charity status.

Footprint & structure

Files a return copy in 24 states

AK
WA
MN
IL
WI
MI
NY
MA
OR
NV
PA
NJ
CT
RI
CA
CO
VA
MD
NM
NC
SC
DC
HI
FL

Part of a family of 1 related entity

  • Fund for International Rivers · exempt

Screen this organization

A dated, signed PDF of the compliance screen for International Rivers Network: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.

A paid feature, included from the $75 plan up. Sign in to download.

Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf

Questions and answers

Who funds International Rivers Network?
International Rivers Network (California) receives grants from 40 organizations whose IRS filings report $8,391,119 to it, the largest being ARCUS FOUNDATION ($1,525,000). 25 of them have funded it in more than one year.
How many funders does International Rivers Network have?
IRS filings report 40 organizations giving $8,391,119 in grants to International Rivers Network, 25 of which have funded it in more than one year.
Who is the largest funder of International Rivers Network?
ARCUS FOUNDATION is the largest funder on record, with $1,525,000 in grants. The full list of funders is on this page.
How can an organization like International Rivers Network find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 40funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing