Liabilities / Assets
14th percentile
Higher debt load relative to assets than 14% of similar nonprofits.
990 • Fiscal year 2015 • EIN 94-2823247
Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.
Liabilities / Assets
14th percentile
Higher debt load relative to assets than 14% of similar nonprofits.
Liabilities / Revenue
44th percentile
Higher debt load relative to revenue than 44% of similar nonprofits.
Net Margin
12th percentile
Higher net margin than 12% of similar nonprofits.
Top Officer Pay
23rd percentile
Higher top officer pay than 23% of similar nonprofits.
Top officer pay equals 7.0% of source-year revenue.
Asset Growth
27th percentile
Faster asset growth than 27% of similar nonprofits.
Revenue Growth
5th percentile
Faster revenue growth than 5% of similar nonprofits.
Assets
Down$30,818,947
Down $809,960 (-2.6%) from 2014
Net Assets
Down$30,244,132
Down $301,733 (-1.0%) from 2014
Liabilities
Down$574,815
Down $508,227 (-47%) from 2014
Revenue
Down$2,150,003
Down $1,429,371 (-40%) from 2014
Expenses
Down$2,409,420
Down $290,843 (-11%) from 2014
Net Income
Down-$259,417
Down $1,138,528 (-130%) from 2014
The Elkhorn Slough Foundation's mission is to conserve and restore Elkhorn Slough and its watershed, California's largest tidal salt marsh south of San Francisco Bay. Renowned for its extraordinary biodiversity, Elkhorn Slough features a dynamic working landscape intertwined with rich natural habitats. To achieve its mission, the Elkhorn Slough Foundation focuses on the direct acquisition and stewardship of key lands while collaborating with partnerorganizations and agencies. Together, they advance sound scientific research, deliver impactful education programs, and foster meaningful community engagement. As an accredited organization through the Land Trust Alliance Accreditation Commission, the Foundation upholds the highest standards in conservation and land stewardship.
To conserve and restore Elkhorn Slough and its watershed, Monterey Bay's premier estuarine wetland.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Land, Buildings, and Equipment, Net | $23,110,095 | $23,028,946 | ▼ $81,149 |
| Investments in Publicly Traded Securities | $6,705,415 | $6,399,771 | ▼ $305,644 |
| Pledges and Grants Receivable | $935,381 | $512,029 | ▼ $423,352 |
| Savings and Temporary Cash Investments | $268,468 | $268,549 | ▲ $81 |
| Cash and Non-Interest-Bearing Accounts | $197,796 | $216,974 | ▲ $19,178 |
| Prepaid Expenses and Deferred Charges | $29,133 | $30,540 | ▲ $1,407 |
| Inventories for Sale or Use | $13,159 | $13,527 | ▲ $368 |
| Accounts Receivable | $4,558 | $1,102 | ▼ $3,456 |
| Other Notes and Loans Receivable, Net | - | $0 | - |
| Receivable From Disqualified Prsn | - | $0 | - |
| Receivables From Officers Etc | - | $0 | - |
| Investments Other Securities | - | $0 | - |
| Investments Program Related | - | $0 | - |
| Intangible Assets | - | $0 | - |
| Total Assets | $31,628,907 | $30,818,947 | ▼ $809,960 |
| Other Assets Total | $364,902 | $347,509 | ▼ $17,393 |
| Liabilities | |||
| Deferred Revenue | $268,333 | $268,333 | → $0 |
| Accounts Payable and Accrued Expenses | $647,706 | $239,479 | ▼ $408,227 |
| Other Liabilities | $167,003 | $67,003 | ▼ $100,000 |
| Total Liabilities | $1,083,042 | $574,815 | ▼ $508,227 |
| Net Assets / Fund Balance | |||
| Unrestricted Net Assets | $19,774,530 | $19,599,261 | ▼ $175,269 |
| Permanently Rstr Net Assets | $9,502,307 | $9,503,307 | ▲ $1,000 |
| Temporarily Rstr Net Assets | $1,269,028 | $1,141,564 | ▼ $127,464 |
| Total Net Assets Fund Balance | $30,545,865 | $30,244,132 | ▼ $301,733 |
| Total Liabilities and Net Assets / Fund Balance | $31,628,907 | $30,818,947 | ▼ $809,960 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Land | $22,176,305 | - | $22,176,305 |
| Buildings | $586,814 | $207,634 | $794,448 |
| Equipment | $61,100 | $442,623 | $503,723 |
| Leasehold Improvements | $204,727 | $213,562 | $418,289 |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2014 | $6,125,395 | $1,000 | ▲ $55,278 | $245,915 | $5,906,471 |
| 2013 | $4,561,062 | $1,076,660 | ▲ $972,821 | $469,827 | $6,125,395 |
| 2012 | $3,570,631 | $450,000 | ▲ $629,191 | $77,674 | $4,561,062 |
| 2011 | $4,076,726 | - | ▼ $52,700 | $443,211 | $3,570,631 |
| 2010 | $3,139,456 | $230,739 | ▲ $792,331 | $74,872 | $4,076,726 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Mark Silberstein | Executive Direc | FT | $130,753 | $18,813 | $149,566 |
| Lorili Toth | Dev. Director | FT | $106,455 | $16,769 | $123,224 |
| Name | Title |
|---|---|
| Judith Connor | President |
| Anne Olsen | Vice President |
| Anne Secker | Trustee |
| Ed Boutonnet | Trustee |
| Kent Marshall | Trustee |
| Mary Wright | Trustee |
| Murray Schekman | Trustee |
| Sandy Hale | Trustee |
| Steve Green | Trustee |
| Terry Eckhardt | Trustee |
| Tom Williams | Trustee |
| Robert Hartmann | Secretary |
| Michael Pinto | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Ducks Unlimited | Whistlestop Construc | 3074 GOLD CANAL DRIVE, Rancho Cordova, CA 95670 | $312,774 |
| Esapwa | Tidal Marsh Restorat | PO Box 92170, Elk Grove, IL 60009 | $152,944 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $1,528,184 |
| Other Expenses | $874,736 |
| Total Fundraising Expense | $185,344 |
| Grants and Similar Amounts Paid | $6,500 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $880,973 | $138,115 | $96,166 | $1,115,254 |
| Fees for Services Other | $347,254 | $32,054 | $8,245 | $387,553 |
| Office Expenses | $126,442 | $14,029 | $26,703 | $167,174 |
| Current Officers, Directors, Trustees, and Key Employees | $108,891 | $23,335 | $23,335 | $155,561 |
| Other Employee Benefits | $112,681 | $19,831 | $16,233 | $148,745 |
| Payroll Taxes | $78,140 | $12,598 | $9,214 | $99,952 |
| Depreciation Depletion | $63,539 | $25,893 | - | $89,432 |
| Fees for Services Accounting | - | $68,430 | - | $68,430 |
| Conferences and Meetings | $28,904 | $3,851 | $631 | $33,386 |
| Fees for Service Investment Mgmnt Fees | $457 | $32,812 | - | $33,269 |
| Travel | $25,592 | $2,704 | $390 | $28,686 |
| Insurance | $2,139 | $23,140 | - | $25,279 |
| Pension Plan Contributions | $5,953 | $1,781 | $938 | $8,672 |
| Fees for Services Legal | $7,100 | $125 | - | $7,225 |
| Interest | - | $6,534 | - | $6,534 |
| Grants to Domestic Individuals | $6,500 | - | - | $6,500 |
| Occupancy | $4,873 | - | - | $4,873 |
| Other Expenses | $1,033 | $1,581 | $2,098 | $1,033 |
| Total Functional Expenses | $1,817,263 | $406,813 | $185,344 | $2,409,420 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $2,413,665 |
| Expenses per Audited Statements | $2,409,420 |
| Total Expenses per Form 990 | $2,409,420 |
| Expenses Not Reported on Form 990 | $4,245 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Line Item | Beginning | End | Change |
|---|---|---|---|
| Receivables from Disqualified Persons | - | $0 | - |
| Receivables from Officers, Directors, Trustees, and Key Employees | - | $0 | - |
| Liability | Amount |
|---|---|
| Line of Credit | $67,003 |
“The 990 is reviewed by Elkhorn Slough Foundation's management staff including the Executive Director, Administrative Director, Bookkeeper and our consulting CPA. The second level of review is conducted by the Finance Committee of the Board of ESF which includes the Treasurer. This review is conducted in advance of submission of the 990 to the IRS. Once the staff and the Finance Committee have approved the 990, it is posted on the secure Board web-site for reviewing by the entire Board of Directors. This would typically occur before submission.”
“The Elkhorn Slough Foundation Board discusses and approves all real estate and other significant transactions and includes a review of conflicts of interest. Any links of board members or key employees to financial transactions are discussed at both the committee level and by the full board. If a real conflict of interest is identified, that board or staff member would identify their interest and recuse themselves from any decision-making process. As noted, officers and board members are required annually, to disclose any interests that could give rise to conflicts.”
“Compensation for the Executive Director is set by the Board of Directors. The process begins with an annual evaluation of the E.D. by the Executive Committee of the Board. This is presented to the full board for approval. Once approved, the Executive Committee assigns a compensation committee of independent directors from the board. The compensation committee secures and reviews current salary and compensation data for the non-profit sector from at least two sources. The committee then recommends a compensation level to the board for approval.”
“The Elkhorn Slough Foundation makes all governing documents available to the public. Copies of articles of incorporation, by-laws, IRS confirmation of 501(c)(3) status, employee manuals, fiscal policies, Board agendas and minutes, Board resolutions, conflict of interest policy and audited financial statements are available for review and inspection at the Foundation offices located at the Elkhorn Reserve Public Facility. In addition, Elkhorn slough Foundation's 990 forms are posted on Guidestar.org.”
“OTHER PROGRAM SERVICES 4: RAM-The Research and Monitoring program on the Elkhorn Slough National Estuarine Research Reserve is the primary vehicle for conducting the water quality monitoring, habitat monitoring and biological monitoring on the Reserve and throughout the Elkhorn Slough Watershed. The research and monitoring team has also been responsible for the publication of a series of peer reviewed scientific publications, listed on the website: www.elkhornslough.org. This is an ongoing program funded by the National Oceanic and Atmospheric Administration. Elkhorn Slough Foundation administers these funds for the benefit of ESNERR and slough conservation in concert with the California Department of Fish and Wildlife. OTHER PROGRAM SERVICES 5: EPR-The education and public outreach programs of the Foundation include the web site www.elkhornslough.org, our presence on social media and our talks, walks, lectures and programs for the public and for school and community groups. This includes volunteer programs with community groups: Boy Scouts, Girl Scouts, church groups, corporate volunteer programs and a host of others. This also includes support for the education programs on the National Estuarine Research Reserve that sees 6,000 to 8,000 students per year and assistance with the Public Visitor Center that hosts a total of 40,000 to 50,000 visitors per year. OTHER PROGRAM SERVICES 6: CTP- The Coastal Training Program is a NOAA funded program of ESNERR that brings diverse people together, farmers, fishermen, regulatory personnel, elected officials, landowners, and scientists, to define natural resource issues and explore solutions. CTP builds collaborative networks that develop expertise and leadership to conserve Elkhorn Slough, one of the biodiversity hotspots of the U.S.”
“X-LTA Standards”
“Since the benefit of easements accrue to the public upon acquisition, the fair market value of easements acquired is shown in the year of acquisition as an addition to net assets if acquired by donor gift and unless conveyed to a public agency for consideration, shown as a reduction in net assets to record the value of the public's benefit and to recognize that these easements have no marketable value once severed from the land and held by Elkhorn Slough Foundation. The purchases of easements are also shown as a reduction in net assets.”
“Stewardship, scholarship and general operations.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 239479 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 4558 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 1102 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | To conserve and restore Elkhorn Slough and its watershed, Monterey Bay's premier estuarine wetland. |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 0 |
| IRS990/AllAffiliatesIncludedInd | 0 | false |
| IRS990/AllOtherContributionsAmt | 0 | 741326 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 0 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
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| IRS990/BackupWthldComplianceInd | 0 | true |
| IRS990/BenefitsToMembersGrp/TotalAmt | 0 | 0 |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | Mark Silberstein |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 8317285939 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 1698 Elkhorn Road |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | Watsonville |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 95076 |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 197796 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 216974 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 23335 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 23335 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 108891 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 155561 |
| IRS990/CompDisqualPersonsGrp/TotalAmt | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | true |
| IRS990/ConferencesMeetingsGrp/FundraisingAmt | 0 | 631 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 3851 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 28904 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 33386 |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | true |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 152944 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 312774 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | PO Box 92170 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 3074 GOLD CANAL DRIVE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | Elk Grove |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | RANCHO CORDOVA |
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| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 60009 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 95670 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | ESAPWA |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | DUCKS UNLIMITED |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | TIDAL MARSH RESTORAT |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | WHISTLESTOP CONSTRUC |
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| IRS990/CYProgramServiceRevenueAmt | 0 | 77396 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -259417 |
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| IRS990/CYTotalExpensesAmt | 0 | 2409420 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 185344 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 2150003 |
| IRS990/DAFExcessBusinessHoldingsInd | 0 | false |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
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| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 268333 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
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| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 89432 |
| IRS990/Desc | 0 | Land Stewardship Program- This program is responsible for the ongoing restoration, maintenance and management of nearly 4,000 acres of land in the Elkhorn Slough watershed. This past year, the Stewardship team again engaged dozens of community volunteers to assist with a wide array of conservation actions, including the removal of tons of trash and debris, control of exotic invasive weeds, monitoring key lands and species, mapping natural resources, collecting, germinating, growing and out-planting thousands of native plants. This program continues to transform hundreds of acres of degraded worn-out sand hills into vital, healthy habitat. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DistributionToDonorInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 28 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/EscrowAccountInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 623681 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditPerformedInd | 0 | true |
| IRS990/FederalGrantAuditRequiredInd | 0 | true |
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| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
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| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 18813 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 16769 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | Steve Green |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | Judith Connor |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | Kent Marshall |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | Tom Williams |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | Anne Secker |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | Anne Olsen |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MURRAY SCHEKMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | Mary Wright |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | Terry Eckhardt |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | Ed Boutonnet |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | Robert Hartmann |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | Michael Pinto |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | SANDY HALE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | Mark Silberstein |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | LORILI TOTH |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 130753 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 106455 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | Vice President |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | Secretary |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | Treasurer |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | Trustee |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | Executive Direc |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DEV. DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/Form990TFiledInd | 0 | false |
| IRS990/FormationYr | 0 | 1982 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GainOrLossGrp/OtherAmt | 0 | -509 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | -70738 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GovernmentGrantsAmt | 0 | 1086377 |
| IRS990/GrantAmt | 0 | 6500 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 6500 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 6500 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 0 |
| IRS990/GrantsToIndividualsInd | 0 | true |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 6347105 |
| IRS990/GrossReceiptsAmt | 0 | 8584278 |
| IRS990/GrossRentsGrp/RealAmt | 0 | 177507 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 33949 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 2 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 0 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 23140 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 2139 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 25279 |
| IRS990/IntangibleAssetsGrp/EOYAmt | 0 | 0 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 6534 |
| IRS990/InterestGrp/TotalAmt | 0 | 6534 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 13159 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 13527 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 115557 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 115557 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsProgramRelatedGrp/EOYAmt | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 6705415 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 6399771 |
| IRS990/InvestTaxExemptBondsInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 32 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 863819 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 23110095 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 23028946 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 23892765 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 509 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 6417843 |
| IRS990/LicensedMoreThanOneStateInd | 0 | false |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | The Elkhorn Slough Foundation's mission is to conserve and restore Elkhorn Slough and its watershed. The slough is California's largest tidal salt marsh outside of San Francisco Bay. Elkhorn Slough harbors extraordinary bio-diversity and encompasses a dynamic working landscape juxtaposed with rich natural habitats. Elkhorn Slough Foundation meets its mission by the direct acquisition and stewardship of key lands and by work with partner organizations and agencies to promote sound scientific research, dynamic education programs and community engagement. Elkhorn Slough Foundation is accredited through the Land Trust Alliance Accreditation Commission upholding the highest standards of the industry. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 30545865 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 30244132 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | -70738 |
| IRS990/NetGainOrLossInvestmentsGrp/RelatedOrExemptFuncIncomeAmt | 0 | -509 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | -71247 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 18026 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 18026 |
| IRS990/NetRentalIncomeOrLossGrp/ExclusionAmt | 0 | 177507 |
| IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 177507 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -42316 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 4873 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 4873 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 26703 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 14029 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 126442 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 167174 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OnBehalfOfIssuerInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OrgFiledInLieuOfForm1041Ind | 0 | false |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 364902 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 347509 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 16233 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 19831 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 112681 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 148745 |
| IRS990/OtherExpensesGrp/Desc | 0 | Other Expenses |
| IRS990/OtherExpensesGrp/Desc | 1 | Special events |
| IRS990/OtherExpensesGrp/Desc | 2 | Donor Cultivation |
| IRS990/OtherExpensesGrp/Desc | 3 | Building repairs and maintenan |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 676 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 715 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 2098 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1581 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 12375 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 4417 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 1033 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 14632 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 5132 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 2098 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 1033 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 167003 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 67003 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 541900 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | Other income |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 5061 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 5061 |
| IRS990/OtherRevenueTotalAmt | 0 | 5061 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 96166 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 138115 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 880973 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 1115254 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OthNotesLoansReceivableNetGrp/EOYAmt | 0 | 0 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PaymentsToAffiliatesGrp/TotalAmt | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 9214 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 12598 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 78140 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 99952 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 938 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 1781 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 5953 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 8672 |
| IRS990/PermanentlyRstrNetAssetsGrp/BOYAmt | 0 | 9502307 |
| IRS990/PermanentlyRstrNetAssetsGrp/EOYAmt | 0 | 9503307 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 935381 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 512029 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 29133 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 30540 |
| IRS990/PrincipalOfficerNm | 0 | Mark Silberstein |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 541700 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 1 | 531390 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | Class and Activity Fees |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | Conservation management |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 73270 |
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Displayed year
2015 • Form 990Detailed filing. Detailed filing data is available for this year.