Liabilities / Assets
32nd percentile
Higher debt load relative to assets than 32% of similar nonprofits.
EIN 52-2081073 • 501(c)3 • Avondale, PA
Profile
SEE BELOW
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
32nd percentile
Higher debt load relative to assets than 32% of similar nonprofits.
Liabilities / Revenue
58th percentile
Higher debt load relative to revenue than 58% of similar nonprofits.
Net Margin
40th percentile
Higher net margin than 40% of similar nonprofits.
Top Officer Pay
28th percentile
Higher top officer pay than 28% of similar nonprofits.
Top officer pay equals 2.0% of source-year revenue.
Asset Growth
25th percentile
Faster asset growth than 25% of similar nonprofits.
Revenue Growth
69th percentile
Faster revenue growth than 69% of similar nonprofits.
Assets
Down$59,112,612
Down $267,032 (-0.4%) from 2023
Liabilities
Down$5,520,442
Down $2,516,121 (-31%) from 2023
Net Assets
Up$53,592,170
Up $2,249,089 (+4.4%) from 2023
Revenue
Up$11,925,322
Up $1,821,269 (+18%) from 2023
Expenses
Up$11,744,025
Up $1,172,631 (+11%) from 2023
Net Income
Up$181,297
Up $648,638 (+139%) from 2023
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2022 below.
SEE BELOW
To advance knowledge of stream and river ecosystems through interdisciplinary research, to develop & communicate new ecological ideas, to provide solutions for water resource problems worldwide, and to promote public understanding of freshwater ecology through educational programs, watershed restoration, conservation leadership and professional service.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $26,284,240 | $22,402,521 | ▼ $3,881,719 |
| Land, Buildings, and Equipment, Net | $10,565,894 | $10,330,636 | ▼ $235,258 |
| Investments Other Securities | $11,536,418 | $9,068,820 | ▼ $2,467,598 |
| Pledges and Grants Receivable | $2,592,127 | $1,083,262 | ▼ $1,508,865 |
| Cash and Non-Interest-Bearing Accounts | $247,019 | $877,576 | ▲ $630,557 |
| Savings and Temporary Cash Investments | $11,498 | $211,526 | ▲ $200,028 |
| Prepaid Expenses and Deferred Charges | $60,952 | $49,825 | ▼ $11,127 |
| Accounts Receivable | $8,627 | $10,762 | ▲ $2,135 |
| Total Assets | $63,149,391 | $54,418,842 | ▼ $8,730,549 |
| Other Assets Total | $11,842,616 | $10,383,914 | ▼ $1,458,702 |
| Liabilities | |||
| Tax Exempt Bond Liabilities | $4,456,783 | $4,185,333 | ▼ $271,450 |
| Other Liabilities | $3,829,727 | $1,768,852 | ▼ $2,060,875 |
| Accounts Payable and Accrued Expenses | $435,398 | $587,450 | ▲ $152,052 |
| Unsecured Notes Loans Payable | $24,229 | $19,117 | ▼ $5,112 |
| Total Liabilities | $8,746,137 | $6,560,752 | ▼ $2,185,385 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $27,172,746 | $24,339,487 | ▼ $2,833,259 |
| Net Assets With Donor Restrictions | $27,230,508 | $23,518,603 | ▼ $3,711,905 |
| Total Net Assets Fund Balance | $54,403,254 | $47,858,090 | ▼ $6,545,164 |
| Total Liabilities and Net Assets / Fund Balance | $63,149,391 | $54,418,842 | ▼ $8,730,549 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Buildings | $7,671,770 | $5,424,479 | $13,096,249 |
| Equipment | $179,799 | $3,093,269 | $3,273,068 |
| Land | $2,357,839 | - | $2,357,839 |
| Other Land Buildings | $121,228 | $341,345 | $462,573 |
| Other Assets Org | $10,187 | - | - |
| Other Securities | $9,068,820 | - | - |
| Period | Beginning | Contrib. | Gain/Loss | Other Uses | End |
|---|---|---|---|---|---|
| 2022 | $49,663,274 | $867,145 | ▼ $7,011,123 | $1,674,228 | $41,845,068 |
| 2021 | $44,017,444 | $1,019,607 | ▲ $6,611,888 | $1,985,665 | $49,663,274 |
| 2020 | $39,291,322 | $1,364,307 | ▲ $3,797,605 | $435,790 | $44,017,444 |
| 2019 | $34,503,165 | $1,304,713 | ▲ $5,080,644 | $1,597,200 | $39,291,322 |
| 2018 | $36,776,998 | $1,945,661 | ▼ $2,739,357 | $1,480,137 | $34,503,165 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| David B Arscott Phd | President & Executive Director | FT | $177,650 | $40,486 | $218,136 |
| Nicole Wickenhauser | Director of Strategic Partnerships | FT | $167,200 | $38,105 | $205,305 |
| John Jackson | Senior Research Scientist | FT | $160,396 | $36,554 | $196,950 |
| Matthew Ehrhart | Director of Watershed Rese | FT | $142,295 | $32,429 | $174,724 |
| John Pepe | Treasurer & Controller | FT | $141,243 | $32,189 | $173,432 |
| Melinda Daniels | Associate Research Scienti | FT | $136,155 | $31,030 | $167,185 |
| Jinjun Kan | Associate Research Scienti | FT | $131,977 | $30,077 | $162,054 |
| Scott Ensign | Vice President | FT | $115,560 | $26,336 | $141,896 |
| Charles Dow | Director of Information Se | FT | $114,804 | $26,164 | $140,968 |
| Steven Kerlin | Director of Enviromental Education | FT | $109,978 | $25,063 | $135,041 |
| Susan Fitzpatrick | Secretary | FT | $53,299 | $12,146 | $65,445 |
| Name | Title |
|---|---|
| Bert Kerstetter | Director |
| Bryan Colket | Director |
| C Porter Schutt Iii | Director |
| Frances Abbott | Director |
| Holly Michael Ph D | Director |
| Josh Auld Phd | Director |
| Lan Chi Vo Md | Director |
| Lee Clark | Director |
| Margaretta Brokaw | Director |
| Michael Bucklin | Director |
| Peter Welling | Director |
| Richard a Hayne | Director |
| Robert F Johnston | Director |
| Robert M Difilippo Ph D | Director |
| Robert W Whetzel | Director |
| Rodman W Moorhead Iv | Director |
| Seetha Coleman-kammula Phd | Director |
| Tracey Nguyen | Director |
| Wb Dixon Stroud Jr | Director |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Dml Poured Walls INC | Independent Contractor | 3199 IRISHTOWN RD, Gordonville, PA 17529 | $292,240 |
| Teamag INC | Independent Contractor | 120 LAKE ST, Ephrata, PA 17522 | $183,769 |
| Gap Hill Carpentry LLC | Independent Contractor | 5632 UMBLETOWN RD, Gap, PA 17527 | $111,208 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $5,671,541 |
| Other Expenses | $3,788,252 |
| Total Fundraising Expense | $402,366 |
| Grants and Similar Amounts Paid | $87,641 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $2,699,427 | $759,898 | $290,112 | $3,749,437 |
| Fees for Services Other | $2,123,455 | $71,943 | - | $2,195,398 |
| Current Officers, Directors, Trustees, and Key Employees | $179,207 | $419,702 | - | $598,909 |
| Pension Plan Contributions | $390,896 | $115,667 | $42,890 | $549,453 |
| Depreciation Depletion | $97,822 | $376,294 | - | $474,116 |
| Other Employee Benefits | $334,801 | $94,626 | $36,973 | $466,400 |
| Payroll Taxes | $206,972 | $78,591 | $21,779 | $307,342 |
| Interest | - | $190,358 | - | $190,358 |
| Insurance | - | $118,006 | - | $118,006 |
| Travel | $91,908 | $1,403 | $5,994 | $99,305 |
| Fees for Service Investment Mgmnt Fees | - | $96,854 | - | $96,854 |
| Office Expenses | $21,494 | $63,124 | $4,436 | $89,054 |
| Foreign Grants | $87,641 | - | - | $87,641 |
| Occupancy | - | $57,535 | - | $57,535 |
| Information Technology | $23,486 | $29,072 | $182 | $52,740 |
| Fees for Services Accounting | - | $38,000 | - | $38,000 |
| Conferences and Meetings | $25,067 | $89 | - | $25,156 |
| Other Expenses | $3,495 | $6,309 | $0 | $9,804 |
| Advertising | $378 | - | - | $378 |
| Total Functional Expenses | $6,588,889 | $2,556,179 | $402,366 | $9,547,434 |
| Line Item | Amount |
|---|---|
| Total Expenses per Audited Statements | $9,555,786 |
| Total Expenses per Form 990 | $9,547,434 |
| Expenses per Audited Statements | $9,450,580 |
| Expenses Not Reported on Form 990 | $105,206 |
| Expenses Not Reported on Financial Statements | $96,854 |
| Region | Activity | Services | Offices | Employees | Spending |
|---|---|---|---|---|---|
| Central America and the Caribbean - Antigua & Barbuda, Aruba, Bahamas, | Program Services Located in the Region | - | 0 | 0 | $87,641 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $105,206 |
| Fundraising Gross Income | $66,395 |
| Professional Fundraising Fees | $0 |
| Event | Gross Receipts | Gross Revenue | Direct Expenses | Net Income |
|---|---|---|---|---|
| WATER'S EDGE EVENT | $189,345 | $31,845 | $14,311 | $17,534 |
| Golf Outing | $86,083 | $19,263 | $5,203 | $14,060 |
| Total Events | $306,721 | $66,395 | $105,206 | $-38,811 |
| Liability | Amount |
|---|---|
| Pension Benefit Obligation | $1,758,665 |
| Operating Lease Liability | $10,187 |
| Bond | Issuer | Issued | Issue Price | Purpose |
|---|---|---|---|---|
| A | Central and Western Chester County Industrial Authority | 2010-12-23 | $6,500,000 | The construction and equipping of a research facility |
| Bond | Total Proceeds | Spent | Retired | Issuance Costs |
|---|---|---|---|---|
| A | $6,500,000 | - | - | $44,375 |
“Director w.b. Dixon stroud, jr. And director michael bucklin have a family relationship.”
“The form 990 is completed by the corporation's auditors and is distributed to the corporation's treasurer for approval prior to filing.”
“Each director, principal officer, and member of a committee with governing board delegated powers shall annually sign a statement that affirms such person: a. Has received a copy of the conflict-of-interest policy, b. Has read and understands the policy, c. Has agreed to comply with the policy, and d. Understands the organization is charitable and in order to maintain its federal tax exemption it must engage primarily in activities that accomplish one or more of its tax-exempt purposes.”
“The compensation of the executive director, officers and highly compensated employees are determined by the board after preliminary work and corresponding analyses performed by the co-chairman of the board. The details are communicated during executive session of the board where staff is not present.”
“The corporation makes its governing documents, conflict of interest policy and financial statements available to the public upon request.”
“Outside services: program service expenses 268,200. Management and general expenses 71,943. Fundraising expenses 0. Total expenses 340,143. Direct project contract fees: program service expenses 1,855,255. Management and general expenses 0. Fundraising expenses 0. Total expenses 1,855,255.”
“Pension related changes other than net periodic pension costs 2,215,895.”
“The corporation's endowment consists of individual funds established for a variety of purposes. Its endowment includes both donor-restricted funds and funds designated by the board of directors to function as endowments. As required by generally accepted accounting principles, net assets associated with endowment funds, including funds designated by the board of directors to function as endowments, are classified and reported based on the existence or absence of donor-imposed restrictions.”
“The corporation complies with fasb asc 740 - accounting for uncertainty in income taxes. For the years ended december 31, 2022 and 2021, the corporation has determined it did not have a material tax liability for uncertain tax positions.”
“Pension changes excluding net periodic pension cost 2,215,895. Fundraising expenses netted with revenue 105,206.”
“Fundraising expenses netted with revenue 105,206.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 435398 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 587450 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 8627 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 10762 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO ADVANCE KNOWLEDGE OF STREAM AND RIVER ECOSYSTEMS THROUGH INTERDISCIPLINARY RESEARCH, TO DEVELOP & COMMUNICATE NEW ECOLOGICAL IDEAS, TO PROVIDE SOLUTIONS FOR WATER RESOURCE PROBLEMS WORLDWIDE, AND TO PROMOTE PUBLIC UNDERSTANDING OF FRESHWATER ECOLOGY THROUGH EDUCATIONAL PROGRAMS, WATERSHED RESTORATION, CONSERVATION LEADERSHIP AND PROFESSIONAL SERVICE. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 378 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 378 |
| IRS990/AllOtherContributionsAmt | 0 | 4804078 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | JOHN D PEPE |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6102682153 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 970 SPENCER ROAD |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | AVONDALE |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 193119514 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 247019 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 877576 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 3 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 419702 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 179207 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 598909 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 89 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 25067 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 25156 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 292240 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 1 | 183769 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 2 | 111208 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 3199 IRISHTOWN RD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 1 | 120 LAKE ST |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 2 | 5632 UMBLETOWN RD |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | GORDONVILLE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 1 | EPHRATA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 2 | GAP |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 1 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 2 | PA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 17529 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 1 | 17522 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 2 | 17527 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | DML POURED WALLS INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 1 | TEAMAG INC |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 2 | GAP HILL CARPENTRY LLC |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | INDEPENDENT CONTRACTOR |
| IRS990/ContractorCompensationGrp/ServicesDesc | 1 | INDEPENDENT CONTRACTOR |
| IRS990/ContractorCompensationGrp/ServicesDesc | 2 | INDEPENDENT CONTRACTOR |
| IRS990/ContriRptFundraisingEventAmt | 0 | 240326 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 7612967 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 87641 |
| IRS990/CYInvestmentIncomeAmt | 0 | 903510 |
| IRS990/CYOtherExpensesAmt | 0 | 3788252 |
| IRS990/CYOtherRevenueAmt | 0 | -38811 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 126488 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -943280 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 5671541 |
| IRS990/CYTotalExpensesAmt | 0 | 9547434 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 402366 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 8604154 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 376294 |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 97822 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 474116 |
| IRS990/Desc | 0 | TO ADVANCE KNOWLEDGE OF STREAM AND RIVER ECOSYSTEMS THROUGH INTERDISCIPLINARY RESEARCH, TO DEVELOP & COMMUNICATE NEW ECOLOGICAL IDEAS, TO PROVIDE SOLUTIONS FOR WATER RESOURCE PROBLEMS WORLDWIDE, AND TO PROMOTE PUBLIC UNDERSTANDING OF FRESHWATER ECOLOGY THROUGH EDUCATIONAL PROGRAMS, WATERSHED RESTORATION, CONSERVATION LEADERSHIP AND PROFESSIONAL SERVICE. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 27230508 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 23518603 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 1 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 87 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/EscrowAccountInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 6588889 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditPerformedInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 1 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 38000 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 38000 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 71943 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 2123455 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 2195398 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 96854 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 96854 |
| IRS990/ForeignActivitiesInd | 0 | 1 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignGrantsGrp/ProgramServicesAmt | 0 | 87641 |
| IRS990/ForeignGrantsGrp/TotalAmt | 0 | 87641 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 20 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 21 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 22 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 23 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 24 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 25 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 26 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 27 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 28 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 29 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 18 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 19 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/KeyEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 40486 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 20 | 32189 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 21 | 26336 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 22 | 12146 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 23 | 36554 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 24 | 38105 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 25 | 30077 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 26 | 32429 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 27 | 31030 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 28 | 26164 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 29 | 25063 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | C PORTER SCHUTT III |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DAVID B ARSCOTT PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | LEE CLARK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JOSH AULD PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MARGARETTA BROKAW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | MICHAEL BUCKLIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | RICHARD A HAYNE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | ROBERT M DIFILIPPO PH D |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | ROBERT W WHETZEL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | FRANCES ABBOTT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | WB DIXON STROUD JR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | ROBERT F JOHNSTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | BRYAN COLKET |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | SEETHA COLEMAN-KAMMULA PHD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | PETER WELLING |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | RODMAN W MOORHEAD IV |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | TRACEY NGUYEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | LAN CHI VO MD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | BERT KERSTETTER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | HOLLY MICHAEL PH D |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | JOHN PEPE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 21 | SCOTT ENSIGN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 22 | SUSAN FITZPATRICK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 23 | JOHN JACKSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 24 | NICOLE WICKENHAUSER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 25 | JINJUN KAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 26 | MATTHEW EHRHART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 27 | MELINDA DANIELS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 28 | CHARLES DOW |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 29 | STEVEN KERLIN |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 177650 |
| 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 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 20 | 141243 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 21 | 115560 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 22 | 53299 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 23 | 160396 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 24 | 167200 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 25 | 131977 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 26 | 142295 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 27 | 136155 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 28 | 114804 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 29 | 109978 |
| 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/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 20 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 21 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 22 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 23 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 24 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 25 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 26 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 27 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 28 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 29 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | PRESIDENT & EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 20 | TREASURER & CONTROLLER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 21 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 22 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 23 | SENIOR RESEARCH SCIENTIST |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 24 | DIRECTOR OF STRATEGIC PARTNERSHIPS |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 25 | ASSOCIATE RESEARCH SCIENTI |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 26 | DIRECTOR OF WATERSHED RESE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 27 | ASSOCIATE RESEARCH SCIENTI |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 28 | DIRECTOR OF INFORMATION SE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 29 | DIRECTOR OF ENVIROMENTAL EDUCATION |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1998 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 1 |
| IRS990/FundraisingAmt | 0 | 240326 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 105206 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 66395 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 312249 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 20 |
| IRS990/GovernmentGrantsAmt | 0 | 2568563 |
| IRS990/GrantAmt | 0 | 87641 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 6641025 |
| IRS990/GrossReceiptsAmt | 0 | 15038136 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 19 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 11 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 182 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 29072 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 23486 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 52740 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 118006 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 118006 |
| IRS990/InterestGrp/ManagementAndGeneralAmt | 0 | 190358 |
| IRS990/InterestGrp/TotalAmt | 0 | 190358 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 591261 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 591261 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsOtherSecuritiesGrp/BOYAmt | 0 | 11536418 |
| IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt | 0 | 9068820 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 26284240 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 22402521 |
| IRS990/InvestTaxExemptBondsInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 45 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 8859093 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 10565894 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 10330636 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 19189729 |
| IRS990/LegalDomicileStateCd | 0 | DE |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 6328776 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | TO ADVANCE KNOWLEDGE OF STREAM AND RIVER ECOSYSTEMS THROUGH INTERDISCIPLINARY RESEARCH, TO DEVELOP & COMMUNICATE NEW ECOLOGICAL IDEAS, TO PROVIDE SOLUTIONS FOR WATER RESOURCE PROBLEMS WORLDWIDE, AND TO PROMOTE PUBLIC UNDERSTANDING OF FRESHWATER ECOLOGY THROUGH EDUCATIONAL PROGRAMS, WATERSHED RESTORATION, CONSERVATION LEADERSHIP AND PROFESSIONAL SERVICE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 1 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 54403254 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 47858090 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 312249 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 312249 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -38811 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -38811 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | -7817779 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 27172746 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 24339487 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 57535 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 57535 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 4436 |
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