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      <LandBldgEquipCostOrOtherBssAmt>171720</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>85292</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>89824</BOYAmt>
        <EOYAmt>86428</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>700</BOYAmt>
        <EOYAmt>6700</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>871428</BOYAmt>
        <EOYAmt>1398703</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>12288</BOYAmt>
        <EOYAmt>8843</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>150000</BOYAmt>
        <EOYAmt>149193</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>29608</BOYAmt>
        <EOYAmt>35524</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>191896</BOYAmt>
        <EOYAmt>193560</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>310818</BOYAmt>
        <EOYAmt>351306</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>368714</BOYAmt>
        <EOYAmt>853837</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>679532</BOYAmt>
        <EOYAmt>1205143</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>871428</BOYAmt>
        <EOYAmt>1398703</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>525610</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>1</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>176384</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>445267</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>740262</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>881750</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>913030</CurrentTaxYearAmt>
        <TotalAmt>3156693</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>176384</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>445267</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>740262</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>881750</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>913030</CurrentTaxYearAmt>
        <TotalAmt>3156693</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>3156693</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>1293</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>3589</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3574</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>2505</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>6339</CurrentTaxYearAmt>
        <TotalAmt>17300</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>3173993</TotalSupportAmt>
      <PublicSupportCY170Pct>0.99450</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.99440</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1039900001">
      <PreservationPublicUseInd>X</PreservationPublicUseInd>
      <ProtectionNaturalHabitatInd>X</ProtectionNaturalHabitatInd>
      <PreservationOpenSpaceInd>X</PreservationOpenSpaceInd>
      <StatesEasementsHeldCnt>1</StatesEasementsHeldCnt>
      <WrittenPolicyMonitoringInd>1</WrittenPolicyMonitoringInd>
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>133965</BeginningYearBalanceAmt>
        <EndYearBalanceAmt>133965</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>132547</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>1418</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>133965</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>132405</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>141</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>132546</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>132174</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>232</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>132406</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>131594</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>580</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>132174</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>82000</OtherCostOrOtherBasisAmt>
        <BookValueAmt>82000</BookValueAmt>
      </LandGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>89720</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>85292</DepreciationAmt>
        <BookValueAmt>4428</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>86428</TotalBookValueLandBuildingsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>ACCRUED PAYROLL AND BENEFITS</Desc>
        <Amt>35524</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>35524</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 5:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION EASEMENT POLICIES ARE REFLECTED IN THEIR EASEMENT DOCUMENTS. THE MONITORING COMMITTEE AND BOARD OF DIRECTORS EVALUATE EACH PROPOSAL TO DETERMINE THE POTENTIAL IMPACT ON THE PROPERTY'S CONSERVATION VALUES. ALL PROSPECTIVE PARCELS ARE TRACKED AGAINST A PROJECT APPROVAL CHECKLIST TO ENSURE NO STEPS IN THE INVESTIGATION, ANALYSIS OR ACQUISITION ARE MISSED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>MERRIMACK RIVER WATERSHED COUNCIL, INC. DOES NOT REPORT CONSERVATION EASEMENTS ON ITS BALANCE SHEET. CONTRIBUTIONS FOR CONSERVTION EASEMENT PROJECTS ARE REPORTED AS INCOME AND THE COSTS ASSOCIATED WITH CONSERVATION EASEMENT PROJECTS ARE REPORTED AS EXPENSES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INTENDED USE FOR THE ENDOWMENT FUNDS IS TO HELP SUPPORT THE OPERATION OF THE ORGANIZATION AND ALSO AIDE IN PROTECTING THE MERRIMACK RIVER AND PROMOTE THE WISE USE OF ITS WATERSHED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE (THE "CODE"). THE ORGANIZATION IS NOT CLASSIFIED AS A PRIVATE FOUNDATION AND CONTRIBUTIONS MADE TO THE ORGANIZATION ARE DEDUCTIBLE BY DONORS AS PROVIDED IN SECTION 170 OF THE CODE. GENERALLY ACCEPTED ACCOUNTING PRINCIPLES IN THE UNITED STATES OF AMERICA PRESCRIBE THE THRESHOLD A TAX POSITION IS REQUIRED TO MEET BEFORE BEING RECOGNIZED AND RECORDED AS A COMPONENT OF CURRENT INCOME TAX EXPESE FOR DIFFERENCES BETWEEN FINANCIAL AND INCCOME TAX REPORTIG POSITIONS WHICH DO NOT MEET THIS THRESHOLD. ANY INTEREST AND PENALTIES RELATED TO UNCERTAIN TAX POSITIONS ARE RECORDED AS A COMPONENT OF INCOME TAX EXPENSE. THE ORGANIZATION HAS REVIEWED ITS TAX POSITIONS THAT REMAIN SUBJECT TO EXAMINATION BY TAX AUTHORITIES AND HAS NOT IDENTIFIED ANY MATERIAL UNCERTAIN TAX POSITIONS AND THUS HAS NOT RECORDED ANY LIABILITY AT JUNE 30, 2023. THE ORGANIZATION'S FEDERAL AND STATE TAX RETURNS ARE SUBJECT TO POSSIBLE EXAMINATION BY TAXING AUTHORITIES UNTIL THE EXPIRATION OF THE RELATED RETURNS STATUTES. IN GENERAL, THE FEDERAL AND STATE TAX RETURNS HAVE A THREE-YEAR STATUTE OF LIMITATION FROM THE DATE OF THE TAX RETURNS WERE DUE OR FILED, WHICHEVER IS LATER. THE ORGANIZATION IS NO LONGER SUBJECT TO EXAMINATIONS AS OF THE DATE OF THE FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL MEMBERS OF THE BOARD OF DIRECTORS ARE PROVIDED WITH A FULL COPY OF THE TAX RETURN FOR THEIR REVIEW AND A VOTE IS TAKEN FOR THE APPROVAL OF THE FORM 990 BEFORE BEING FILED WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION ANNUALLY REVIEWS THE CONFLICT OF INTEREST POLICY WITH OFFICERS; DIRECTORS AND KEY EMPLOYEES FOR COMPLETENESS AND CHANGES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S BOARD OF DIRECTORS REVIEWS AND VOTES ON THE COMPENSATION FOR THE EXECUTIVE DIRECTOR. THEY USE OUTSIDE SOURCES; OTHER SIMILAR ORGANIZATIONS; AND OTHER PUBLIC INFORMATION TO ENSURE THE LIMITS ARE IN LINE WITH INDUSTRY STANDARDS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL APPLICABLE GOVERNING DOCUMENTS; CONFLICT OF INTEREST POLICY; AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>ROUNDING 1.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>