Liabilities / Assets
65th percentile
Higher debt load relative to assets than 65% of similar nonprofits.
EIN 52-1199044 • 501(c)3 • Ellicott City, MD
Profile
To preserve, protect, interpret and restore the environment, history and culture of the patapsco river valley.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
65th percentile
Higher debt load relative to assets than 65% of similar nonprofits.
Liabilities / Revenue
65th percentile
Higher debt load relative to revenue than 65% of similar nonprofits.
Net Margin
30th percentile
Higher net margin than 30% of similar nonprofits.
Top Officer Pay
88th percentile
Higher top officer pay than 88% of similar nonprofits.
Top officer pay equals 20.6% of source-year revenue.
Asset Growth
26th percentile
Faster asset growth than 26% of similar nonprofits.
Revenue Growth
25th percentile
Faster revenue growth than 25% of similar nonprofits.
Assets
Down$471,078
Down $31,019 (-6.2%) from 2024
Liabilities
Down$34,699
Down $4,096 (-11%) from 2024
Net Assets
Down$436,379
Down $26,923 (-5.8%) from 2024
Revenue
Down$522,036
Down $63,520 (-11%) from 2024
Expenses
Up$548,959
Up $15,405 (+2.9%) from 2024
Net Income
Down-$26,923
Down $78,925 (-152%) from 2024
Most recent year
2025 • Form 990Detailed filing. Detailed filing data is available for this year.
To preserve, protect, interpret and restore the environment, history and culture of the patapsco river valley.
Preserve, protect, interpret & restore the environment, history & culture of patapsco river valley.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Savings and Temporary Cash Investments | $300,870 | $407,813 | ▲ $106,943 |
| Cash and Non-Interest-Bearing Accounts | $180,766 | $42,909 | ▼ $137,857 |
| Pledges and Grants Receivable | $13,247 | $11,592 | ▼ $1,655 |
| Prepaid Expenses and Deferred Charges | $5,964 | $7,514 | ▲ $1,550 |
| Land, Buildings, and Equipment, Net | $0 | $0 | → $0 |
| Total Assets | $502,097 | $471,078 | ▼ $31,019 |
| Other Assets Total | $1,250 | $1,250 | → $0 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $38,795 | $34,699 | ▼ $4,096 |
| Total Liabilities | $38,795 | $34,699 | ▼ $4,096 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $271,828 | $303,551 | ▲ $31,723 |
| Net Assets With Donor Restrictions | $191,474 | $132,828 | ▼ $58,646 |
| Total Net Assets Fund Balance | $463,302 | $436,379 | ▼ $26,923 |
| Total Liabilities and Net Assets / Fund Balance | $502,097 | $471,078 | ▼ $31,019 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $0 | $16,813 | $16,813 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| Aaron Shapiro | Executive Director | FT | $102,358 | $5,118 | $107,476 |
| Name | Title |
|---|---|
| Mark Southerland | President |
| Angela Ober | Vice President |
| Daphne Daly | Vice President |
| Ray Haislip | Vice President |
| Alina Yohanan | Director |
| Chris Gallant | Director |
| John Heinrichs | Director |
| Justine Schaeffer | Director |
| Kevin Chin | Director |
| Lakshmi Rajkumar | Director |
| Lisa Jensen | Director |
| Marsha Mclaughlin | Director |
| Nancy Lawson | Director |
| Nancy Pickard | Director |
| Pam Johnson | Director |
| Rebecca Davis | Director |
| Tom Schueler | Director |
| Tom Somers | Director |
| Ken Boone | Secretary |
| Pete Lins | Treasurer |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $395,490 |
| Other Expenses | $127,504 |
| Grants and Similar Amounts Paid | $25,965 |
| Total Fundraising Expense | $4,582 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $213,147 | $38,062 | $2,537 | $253,746 |
| Current Officers, Directors, Trustees, and Key Employees | $89,805 | $16,036 | $1,069 | $106,910 |
| Payroll Taxes | $22,906 | $4,090 | $273 | $27,269 |
| Grants to Domestic Orgs | $25,965 | - | - | $25,965 |
| Office Expenses | $18,370 | $3,281 | $218 | $21,869 |
| Fees for Services Accounting | - | $20,826 | - | $20,826 |
| Occupancy | $14,150 | $2,527 | $168 | $16,845 |
| Advertising | $13,405 | $2,394 | $159 | $15,958 |
| Fees for Services Other | $14,451 | - | - | $14,451 |
| Pension Plan Contributions | $6,354 | $1,135 | $76 | $7,565 |
| Insurance | - | $6,647 | - | $6,647 |
| Travel | $5,473 | $977 | $65 | $6,515 |
| Information Technology | $1,477 | $264 | $17 | $1,758 |
| Other Expenses | $50 | $8 | - | $58 |
| Total Functional Expenses | $448,130 | $96,247 | $4,582 | $548,959 |
| Line Item | Amount |
|---|---|
| Fundraising Direct Expenses | $0 |
| Fundraising Gross Income | $0 |
| Professional Fundraising Fees | $0 |
“The organization's bylaws provide for three classes of membership: (1) general, (2) board of directors, (3) honorary.”
“Only qualified general members present at the annual meeting may vote for candidates for the board. No person shall cast more than one ballot, and proxies and absentee votes will not be recognized.”
“A draft of form 990 is emailed to all board members for review before filing of return.”
“Each officer, director and employee completes a questionaire to fully disclose any conflict or potential conflicts of interest. The disclosure statement is completed upon his or her initial association with the organization and is updated annually thereafter.”
“Compensation is determined by board review with use of industry specific publications which help guide the board in their compensation related decisions.”
“The organizations governing documents, conflict of interest policy, and financial statements are available upon request.”
“The organization has not changed its oversight or selection process from the prior year.”
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 | 1 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 38795 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 34699 |
| IRS990/AcctCompileOrReviewBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | PRESERVE, PROTECT, INTERPRET & RESTORE THE ENVIRONMENT, HISTORY & CULTURE OF PATAPSCO RIVER VALLEY. |
| IRS990/AdvertisingGrp/FundraisingAmt | 0 | 159 |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 2394 |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 13405 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 15958 |
| IRS990/AllOtherContributionsAmt | 0 | 100628 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | AARON SHAPIRO |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 4106961328 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 3748 OLD COLUMBIA PIKE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | ELLICOTT CITY |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 21043 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 180766 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 42909 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 1069 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 16036 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 89805 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 106910 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 1 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContriRptFundraisingEventAmt | 0 | 1190 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 510068 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 25965 |
| IRS990/CYInvestmentIncomeAmt | 0 | 11712 |
| IRS990/CYOtherExpensesAmt | 0 | 127504 |
| IRS990/CYOtherRevenueAmt | 0 | 256 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -26923 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 395490 |
| IRS990/CYTotalExpensesAmt | 0 | 548959 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 4582 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 522036 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | HERITAGE - HELPS PRESERVE AND PROTECT THE HISTORY AND CULTURE OF THE VALLEY THROUGH PUBLIC OUTREACH, EDUCATIONAL PROGRAMS AND PROVIDING MINI GRANTS TO HERITAGE AREA PARTNERS FOR HERITAGE RELATED ASSISTANCE AND SUPPORT. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DoingBusinessAsName/BusinessNameLine1Txt | 0 | PATAPSCO HERITAGE GREENWAY |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 191474 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 132828 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 12 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 286804 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 20826 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 20826 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 14451 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 14451 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 4.00 |
| 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/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/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| 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 | 5118 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | MARK SOUTHERLAND |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | DAPHNE DALY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | RAY HAISLIP |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | ANGELA OBER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | PETE LINS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | KEN BOONE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | KEVIN CHIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | REBECCA DAVIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | CHRIS GALLANT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | JOHN HEINRICHS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | LISA JENSEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | PAM JOHNSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | NANCY LAWSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | MARSHA MCLAUGHLIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | NANCY PICKARD |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | LAKSHMI RAJKUMAR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | JUSTINE SCHAEFFER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | TOM SOMERS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | TOM SCHUELER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | ALINA YOHANAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 20 | AARON SHAPIRO |
| 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 | 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 | 102358 |
| 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/TitleTxt | 0 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | SECRETARY |
| 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 | EXECUTIVE DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2000 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedInd | 0 | 0 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/FundraisingAmt | 0 | 1190 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 0 |
| IRS990/FundraisingGrossIncomeAmt | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 20 |
| IRS990/GovernmentGrantsAmt | 0 | 408250 |
| IRS990/GrantAmt | 0 | 25965 |
| IRS990/GrantsToDomesticOrgsGrp/ProgramServicesAmt | 0 | 25965 |
| IRS990/GrantsToDomesticOrgsGrp/TotalAmt | 0 | 25965 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 522036 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 20 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InfoInScheduleOPartXIIInd | 0 | X |
| IRS990/InformationTechnologyGrp/FundraisingAmt | 0 | 17 |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 264 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 1477 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 1758 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 6647 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 6647 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 11712 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 11712 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/IRPDocumentCnt | 0 | 2 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 16813 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 16813 |
| IRS990/LegalDomicileStateCd | 0 | MD |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | TO PRESERVE, PROTECT, INTERPRET AND RESTORE THE ENVIRONMENT, HISTORY AND CULTURE OF THE PATAPSCO RIVER VALLEY. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 463302 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 436379 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | 0 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 271828 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 303551 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 168 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 2527 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 14150 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 16845 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 218 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 3281 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 18370 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 21869 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 1250 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 1250 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | ENVIRONMENTAL PROGRAM S |
| IRS990/OtherExpensesGrp/Desc | 1 | EVENT MATERIALS & SUPPL |
| IRS990/OtherExpensesGrp/Desc | 2 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 8 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 13693 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 8884 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 50 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 13693 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 8884 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 58 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | MISCELLANEOUS INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 256 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 256 |
| IRS990/OtherRevenueTotalAmt | 0 | 256 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 2537 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 38062 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 213147 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 253746 |
| IRS990/OtherWebsiteInd | 0 | X |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 273 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 4090 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 22906 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 27269 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 76 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 1135 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 6354 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 7565 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 13247 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 11592 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 5964 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 7514 |
| IRS990/PrincipalOfficerNm | 0 | MARK SOUTHERLAND |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | ENVIRONMENT AND STREAMWATCH - RALLIES THOUSANDS OF VOLUNTEERS EACH YEAR TO CLEAN UP TRASH, REMOVE INVASIVE SPECIES, AND PLANT TREES IN SUPPORT OF ITS MISSION TO PRESERVE AND PROTECT THE NATURAL RESOURCES OF THE VALLEY. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 161326 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 578188 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 30084 |
| IRS990/PYInvestmentIncomeAmt | 0 | 7368 |
| IRS990/PYOtherExpensesAmt | 0 | 129283 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 52002 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 374187 |
| IRS990/PYTotalExpensesAmt | 0 | 533554 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 585556 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -26923 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 300870 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 407813 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 510068 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 578188 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 619855 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 515184 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 296396 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 2519691 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearAmt | 0 | 5000 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus1YearAmt | 0 | 5000 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 5000 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 5000 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 5000 |
| IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt | 0 | 25000 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 11712 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 7368 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 816 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 5 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 128 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 20029 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearAmt | 0 | 256 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 263 |
| IRS990ScheduleA/OtherIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 165 |
| IRS990ScheduleA/OtherIncome170Grp/TotalAmt | 0 | 684 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.99190 |
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