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Stewardship · Professional society

River Management Society

“Support professional river management to preserve river values.”

Home groundMissoula, MT
Founded1996
Tax status501(c)(3)
Led byRisa Shimoda

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The work

What they do

Professional organization for river managers from federal, state, and local agencies. Training, knowledge sharing, and river management best practices.

Where the money went, FY2024

The work, and what it cost

Fielded in-person and virtual workshops through the RMS

$170K, 41% of spending

Fielded in-person and virtual workshops through the RMS river training center produced and hosted peer-learning river trips supported the river studies and leadrship certificate program expanded the national river…

Read it as they filed it
FIELDED IN-PERSON AND VIRTUAL WORKSHOPS THROUGH THE RMS RIVER TRAINING CENTER PRODUCED AND HOSTED PEER-LEARNING RIVER TRIPS SUPPORTED THE RIVER STUDIES AND LEADRSHIP CERTIFICATE PROGRAM EXPANDED THE NATIONAL RIVER RECREATION DATABASE AND PRODUCED AND POSTED QUARTERLY JOURNALS ON RIVER MANAGEMENT.

IRS Form 990 Part III, fiscal year 2024, signed under penalty of perjury.

Follow the dollar

41 cents of every dollar goes to the work

41¢
41¢ the work59¢ keeping the lights on0¢ raising the next dollar

One year’s split is a snapshot, not a verdict. Splits swing hard with land deals, grants, and campaign timing.

$170,156 programs, $248,462 management, $885 fundraising. Form 990, FY2024.

The people

Who does the work

4paid staff
16board members
Risa ShimodaExec DirectorSigned the 2025 federal filing as Executive Director

Took over from Judy Culver; the FY2024 officer table still lists them.

Honesty note: leadership comes from each year’s federal filing, so it can run a year behind. If it’s out of date, tell us. Work at the River Management Society? Claim this page.

The filings

14 years of filings

Total revenue by fiscal year, as filed. Point at or tap the line for any year.

$374K FY2420112024
Total revenue by fiscal year
YearRevenue
2011$139,663
2012$222,222
2013$145,735
2014$184,964
2015$183,902
2016$202,282
2017$298,916
2018$408,384
2019$295,053
2020$381,449
2021$323,212
2022$384,847
2023$468,390
2024$374,433

From $140K in 2011 to $374K in FY24, with no missed filing in 14 years.

Stand with the River Management Society

The mission is theirs. The backing is yours.

Sources and methodFinancials, headcounts, and program text: IRS Form 990, FY2024 and 13 prior filings via ProPublica Nonprofit Explorer, EIN 31-1297130. Leadership and compensation: Form 990 Part VII and the return’s signature block, FY2024 filing. Org-reported figures are always labeled. Data verified as of 2026-09-23. Nothing on this page is pay-to-play.