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Nonprofit · EIN 77-0051124

THE MONO LAKE FOUNDATION

Tax-exempt · LEE VINING, CA 93541

Financials

$4.6M$2.8M2021$3.7M$3.7M2023$5.2M$4.1M2024
Revenue Expenses · by fiscal year end
Financials of THE MONO LAKE FOUNDATION by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2024990$5,226,688$4,113,833$1,112,855$17,747,859$266,820$17,481,039
December 31, 2023990$3,695,725$3,695,027$698$15,293,399$155,685$15,137,714
December 31, 2021990$4,631,166$2,802,081$1,829,085$16,255,498$238,196$16,017,302
Financial details: 990 for the year ended December 31, 2024

Revenue

Contributions, gifts and grants
$4,569,755
Program service revenue
$98,474
Investment income
$350,324
Net rental income
$71,327
Net gain from sales of assets
$3,808
Net income from sales of inventory
$136,808
Other revenue
$208,135

Expenses

Grants and similar amounts paid
$37,910
Compensation of officers, directors and key employees
$154,128
Other salaries and wages
$1,284,852
Salaries, compensation and benefits (total)
$1,704,467
Professional fundraising fees
$102,767
Legal fees
$50,622
Accounting fees
$178,084
Occupancy
$116,242
Travel
$73,947
Depreciation
$82,352
Program services (functional)
$3,604,347
Management and general (functional)
$199,450
Fundraising (functional)
$310,036

Balance sheet and other

Total assets, start of year
$15,293,399
Total assets, end of year
$17,747,859
Total liabilities, end of year
$266,820
Net assets, end of year
$17,481,039
Land, buildings and equipment
$2,850,786
Publicly traded securities
$13,735,393
Net assets without donor restrictions
$14,965,658
Net assets with donor restrictions
$2,515,381
Gross unrelated business income
$60,441
Gross receipts
$7,131,480
Employees
37
Volunteers
110
Year formed
1985
State of legal domicile
CA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2024, highest compensation first.

NameTitleHours / weekCompensationOther / benefits
GEOFFREY MCQUILKINEXCUTIVE DIRECTOR
Officer
40$149,639$4,489
SALLY GAINESCHAIRPERSON
Trustee or director, Officer
5$0$0
DAVID KANNERTREASURER
Trustee or director, Officer
5$0$0
TOM SOTOSECRETARY
Trustee or director, Officer
5$0$0
MARTHA DAVISDIRECTOR
Trustee or director
5$0$0
DOUG VIRTUEDIRECTOR
Trustee or director
5$0$0
SHERRYL TAYLORDIRECTOR
Trustee or director
5$0$0
VIREO GAINESDIRECTOR
Trustee or director
5$0$0
GINA RADIEVEDIRECTOR
Trustee or director
5$0$0
KRISTINE ZEIGLERDIRECTOR
Trustee or director
5$0$0
990 for the year ended December 31, 2023: 10 people
NameTitleHours / weekCompensationOther / benefits
GEOFFREY MCQUILKINEXECUTIVE DIRECTOR
Officer
40$123,000$3,690
SALLY GAINESCHAIRPERSON
Trustee or director, Officer
5$0$0
DAVID KANNERTREASURER
Trustee or director, Officer
5$0$0
TOM SOTOSECRETARY
Trustee or director, Officer
5$0$0
MARTHA DAVISDIRECTOR
Trustee or director
5$0$0
DOUG VIRTUEDIRECTOR
Trustee or director
5$0$0
SHERYL TAYLORDIRECTOR
Trustee or director
5$0$0
VIREO GAINESDIRECTOR
Trustee or director
5$0$0
GINA RADIEVEDIRECTOR
Trustee or director
5$0$0
KRISTINE ZEIGLERDIRECTOR
Trustee or director
5$0$0
990 for the year ended December 31, 2021: 10 people
NameTitleHours / weekCompensationOther / benefits
GEOFFREY MCQUILKINEXECUTIVE DIRECTOR
Officer
40$103,389$2,894
SALLY GAINESCHAIRPERSON
Trustee or director, Officer
5$0$0
DAVID KANNERTREASURER
Trustee or director, Officer
5$0$0
TOM SOTOSECRETARY
Trustee or director, Officer
5$0$0
MARTHA DAVISDIRECTOR
Trustee or director
5$0$0
DOUG VIRTUEDIRECTOR
Trustee or director
5$0$0
SHERYL TAYLORDIRECTOR
Trustee or director
5$0$0
VIREO GAINESDIRECTOR
Trustee or director
5$0$0
GINA RADIEVEDIRECTOR
Trustee or director
5$0$0
KRISTINE ZEIGLERDIRECTOR
Trustee or director
5$0$0

Address and contacts

Address (IRS master file)
PO BOX 29, LEE VINING, CA 93541-0029
Principal officer (990 for 2024)
GEOFFREY MCQUILKIN, PO BOX 29, LEE VINING, CA 93541
Signed the 990
GEOFFREY MCQUILKIN, EXECUTIVE DIRECTOR
Phone
(760) 647-6595
Return prepared by
GILBERT CPAS

California records

California keeps its own records of charities and corporations. Search them by EIN 77-0051124 or by the name THE MONO LAKE FOUNDATION.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

THE MONO LAKE FOUNDATION (KNOWN AS THE MONO LAKE COMMITTEE) IS A NON-PROFIT CITIZEN'S GROUP DEDICATED TO PROTECTING AND RESTORING MONO LAKE, ITS TRIBUTARY STREAMS, AND SURROUNDING LANDS, EDUCATING THE PUBLIC ABOUT MONO LAKE AND THE IMPACTS ON THE ENVIRONMENT OF EXCESSIVE WATER USE, AND PROMOTING COOPERATIVE SOLUTIONS THAT PROTECT MONO LAKE AND MEET REAL WATER NEEDS WITHOUT TRANSFERRING ENVIRONMENTAL PROBLEMS TO OTHER AREAS.

990 for the year ended December 31, 2024

Program accomplishments

  • PROTECTION & RESTORATION: THE MONO LAKE COMMITTEE PROTECTS THE ECOLOGICAL HEALTH AND SCENIC QUALITIES OF MONO LAKE, ITS TRIBUTARY STREAMS, AND SURROUNDING LANDS. THE COMMITTEE ADVOCATES AND IMPLEMENTS RESTORATION PROGRAMS THAT HEAL THE DAMAGE DONE BY EXCESSIVE WATER DIVERSIONS TO LOS ANGELES IN PAST DECADES INCLUDING RAISING MONO LAKE TO THE STATE-MANDATED ECOLOGICALLY SUSTAINABLE LEVEL AND RESTORING THE HEALTH OF MONO'S TRIBUTARY STREAMS AND WATERFOWL HABITAT. WORKING CLOSELY WITH OUR COMMUNITY AND STATE, FEDERAL, AND REGIONAL GROUPS, THE MONO LAKE COMMITTEE SEEKS TO DEMONSTRATE THE INTERCONNECTION BETWEEN A HEALTHY ECOSYSTEM AND A SUSTAINABLE ECONOMY. THE MONO LAKE COMMITTEE'S STATEWIDE WATER POLICY WORK FOCUSES ON USING THE LESSONS LEARNED AT MONO LAKE AS A TOOL TO ADVOCATE FOR CONSERVATION, RECLAMATION, AND WISE WATER USE. THE MONO LAKE COMMITTEE ALSO MAINTAINS AN ACTIVE PRESENCE IN LOS ANGELES, REFLECTING THE LONG-TERM INTERTWINED RELATIONSHIP BETWEEN THE CITY AND MONO LAKE.
    Expenses $3,604,347 · grants $37,910 · revenue $174,841
  • EDUCATION: THE MONO LAKE COMMITTEE SEEKS TO SHARE THE MONO LAKE STORY WITH THE GENERAL PUBLIC AND A DIVERSE RANGE OF SCHOOLS AND COMMUNITY GROUPS. EDUCATION PROGRAMS INCLUDE INTERPRETIVE WALKS AND CANOE TOURS AT MONO LAKE, BIRD WALKS, ENVIRONMENTAL EDUCATION FOR SCHOOL GROUPS, WEEKEND FIELD SEMINARS, A PUBLIC INFORMATION CENTER WITH EXHIBITS AND A FILM, AND THE OUTDOOR EDUCATION CENTER THAT CONNECTS LOS ANGELES YOUTH TO THE SOURCE OF THEIR WATER. THESE PROGRAMS, WHICH REACH THOUSANDS OF PEOPLE ANNUALLY, EMPHASIZE PERSONAL ENVIRONMENTAL RESPONSIBILITY THROUGH UNDERSTANDING THE BALANCE BETWEEN MONO LAKE'S UNIQUE ECOSYSTEM AND HUMANS' NEED FOR WATER.MONO LAKE COMMITTEE COMMUNICATIONS PROVIDE VALUABLE EDUCATIONAL INFORMATION TO THE PUBLIC. THE QUARTERLY MONO LAKE NEWSLETTER CONTAINS DETAILED INFORMATION ABOUT PUBLIC POLICY, NATURAL HISTORY, AND OTHER ITEMS RELEVANT TO MONO LAKE AND IS MAILED TO THE MONO LAKE COMMITTEE'S 16,000 MEMBERS AND GIVEN TO THE PUBLIC FOR FREE. THE MONO LAKE COMMITTEE'S WEBSITE, MONOLAKE.ORG PROVIDES A WIDE RANGE OF CURRENT NEWS AND INFORMATION ABOUT MONO LAKE.
  • SCIENTIFIC RESEARCH: THE MONO LAKE COMMITTEE RUNS THE MONO BASIN FIELD STATION TO SUPPORT SCIENTIFIC RESEARCH IN THE MONO BASIN BY PROVIDING HOUSING AND BASIC RESOURCES NEEDED FOR RESEARCH. THE INFORMATION GATHERED AT THE FIELD STATION IS INSTRUMENTAL IN UNDERSTANDING MONO LAKE AND IN SHAPING THE MONO LAKE COMMITTEE'S POLICIES AND SCIENCE-BASED LAND MANAGEMENT BY AGENCIES. THE MONO LAKE COMMITTEE ALSO RUNS THE VORSTER CENTER FOR MONO BASIN HYDROLOGY, A SCIENCE AND RESEARCH HUB FOR DATA COLLECTION, MODELING, ANALYSIS, FORECASTING, AND REAL-WORLD APPLICATION OF MONO LAKE AND MONO BASIN HYDROLOGY. THE MONO LAKE COMMITTEE ALSO MAINTAINS AN ONLINE LIBRARY FOR SCIENTIFIC RESEARCH, ENVIRONMENTAL STUDIES, AND HISTORICAL DOCUMENTS AT MONOBASINRESEARCH.ORG.

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026Not on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
77-0051124
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1985
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$17,747,859
Income (IRS master file)
$7,131,480

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2024$5,226,688$4,113,833$17,747,859XML
990-TDecember 2024–––IRS
990December 2023$3,695,725$3,695,027$15,293,399XML
990-TDecember 2023–––IRS
990December 2022$3,794,468$3,290,303$14,233,787IRS
990-TDecember 2022–––IRS
990December 2021$4,631,166$2,802,081$16,255,498XML
990-TDecember 2021–––IRS
990December 2020–––IRS
990-TDecember 2020–––IRS
990December 2018–––IRS
990December 2017–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 77-0051124).

Questions about THE MONO LAKE FOUNDATION

What is the EIN of THE MONO LAKE FOUNDATION?
The employer identification number (EIN) of THE MONO LAKE FOUNDATION is 77-0051124.
Is THE MONO LAKE FOUNDATION tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1985.
Are donations to THE MONO LAKE FOUNDATION tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does THE MONO LAKE FOUNDATION file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of THE MONO LAKE FOUNDATION due?
The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
When did THE MONO LAKE FOUNDATION last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2024.
Who is the principal officer of THE MONO LAKE FOUNDATION?
The 990 for the year ended December 31, 2024 names GEOFFREY MCQUILKIN.
Who are the officers and directors of THE MONO LAKE FOUNDATION?
The 990 for the year ended December 31, 2024 lists 10 people; 1 received compensation from the organization, the highest $149,639 (GEOFFREY MCQUILKIN, EXCUTIVE DIRECTOR).
How much revenue does THE MONO LAKE FOUNDATION have?
On its 990 for the year ended December 31, 2024 it reported revenue of $5,226,688, expenses of $4,113,833 and total assets of $17,747,859 at year end.

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