| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | THE CHAUTAUQUA WATERSHED CONSERVANCY'S MISSION IS TO PRESERVE AND ENHANCE THE WATER QUALITY, SCENIC BEAUTY, AND ECOLOGICAL HEALTH OF THE LAKES, STREAMS, AND WATERSHEDS OF THE CHAUTAUQUA REGION. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 487 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 487 |
| IRS990/AllOtherContributionsAmt | 0 | 394135 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 2263 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 7194 |
| IRS990/AllOtherExpensesGrp/ProgramServicesAmt | 0 | 8129 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 17586 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | true |
| IRS990/AuditCommitteeInd | 0 | true |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | JOHN JABLONSKI |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 7166642166 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 413 NORTH MAIN STREET |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | JAMESTOWN |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | NY |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 14701 |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOfficerEntInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 43335 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 39437 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 21438 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 10737 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 43567 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 75742 |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | true |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | true |
| IRS990/ConservationEasementsInd | 0 | true |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/ContriRptFundraisingEventAmt | 0 | 37252 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 440122 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 2296 |
| IRS990/CYOtherExpensesAmt | 0 | 153555 |
| IRS990/CYOtherRevenueAmt | 0 | -8568 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 51978 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 213317 |
| IRS990/CYTotalExpensesAmt | 0 | 381872 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 68839 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 15000 |
| IRS990/CYTotalRevenueAmt | 0 | 433850 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | true |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 2269 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 2269 |
| IRS990/Desc | 0 | PUBLIC EDUCATION AND TECHNICAL ASSISTANCE - MAJOR ACCOMPLISHMENTS DURING 2017-18: - PUBLICATION AND DISTRIBUTION OF TWO ISSUES OF THE CONSERVANCY'S "THE SHED SHEET" NEWLETTER TO APPROXIMATELY 5,000 INDIVIDUALS, FAMILIES, AND BUSINESSES. - E-MAIL ANNOUNCEMENTS, FACEBOOK POSTS, WATERSHED EDUCATION PUBLIC SERVICE ANNOUNCEMENTS, AND DISPLAY MESSAGES. - MAINTENANCE OF AN EDUCATIONAL WEBSITE. - PUBLIC EDUCATION TOURS AT NATURE PRESERVES AND TARGETED CONSERVATION SITES. - MEETINGS WITH APPROXIMATELY FIFTEEN LANDOWNERS TO PROVIDE LANDSCAPING OR EROSION CONTROL TECHNICAL ASSISTANCE. - HELD THREE PUBLIC WATERSHED EDUCATION PROGRAMS AND A LANDSCAPING FOR WATER QUALITY TOUR, FOCUSING ON THE CAUSES OF HARMFUL ALGAE BLOOMS, EROSION AND SEDIMENTATION, AND THE POTENTIAL LINK TO LAWN FERTILIZATION. - ORGANIZED TEN EDUCATIONAL SUMMER "LAKE WALKS". - DELIVERED PUBLIC EDUCATION ON BEHALF OF THE CONSERVANCY AND PARTNER AGENCIES ON EIGHT STREAM EROSION CONTROL PROJECTS. - PRESENTED THE CHAUTAUQUA LAKE CURRICULUM PROGRAM TO 260 SCHOOL CHILDREN IN KINDERGARTEN THROUGH 5TH GRADES. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | true |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | true |
| IRS990/EmployeeCnt | 0 | 6 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | true |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 121217 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FederalGrantAuditRequiredInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 6684 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 6684 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 2252 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 25000 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 27252 |
| IRS990/FeesForServicesProfFundraising/FundraisingAmt | 0 | 15000 |
| IRS990/FeesForServicesProfFundraising/TotalAmt | 0 | 15000 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form1098CFiledInd | 0 | false |
| IRS990/Form8282PropertyDisposedOfInd | 0 | false |
| IRS990/Form8899Filedind | 0 | false |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 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/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/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 | 9215 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | LINDA BARBER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | THEODORE C FIRST |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | LYLE T HAJDU |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | MICHAEL E JABOT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | DONALD KIMMEL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | DOUGLAS LARSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MARY LAUMER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | KAREY M LAWTON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JUDITH F MASKREY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | REBECCA L NYSTROM |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ALBERTO REY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | CRAIG A SEGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | PAUL STAGE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | DEBORAH C TREFTS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | JEANNE WIEBENGA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | ROBERT F WOOLER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | JOHN JABLONSKI |
| 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 | 65155 |
| 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/TitleTxt | 0 | VP/PRESID (8 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | PRESIDENT TH |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR (TH |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR (TH |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | DIRECTOR (NE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | DIRECTOR/VP |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | DIRECTOR (NE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | EXECUTIVE DI |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | true |
| IRS990/Form990TFiledInd | 0 | true |
| IRS990/FormationYr | 0 | 1990 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | true |
| IRS990/FundraisingActivitiesInd | 0 | true |
| IRS990/FundraisingAmt | 0 | 37252 |
| IRS990/FundraisingDirectExpensesAmt | 0 | 12751 |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 13 |
| IRS990/GovernmentGrantsAmt | 0 | 8735 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 446601 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | true |
| IRS990/IndependentVotingMemberCnt | 0 | 13 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/FundraisingAmt | 0 | 576 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 731 |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 2103 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3410 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 1600 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 1450 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 2296 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 2296 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 7 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 21632 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 2209013 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 2252744 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 2274376 |
| IRS990/LegalDomicileStateCd | 0 | NY |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | THE CHAUTAUQUA WATERSHED CONSERVANCY'S MISSION IS TO PRESERVE AND ENHANCE THE WATER QUALITY, SCENIC BEAUTY, AND ECOLOGICAL HEALTH OF THE LAKES, STREAMS, AND WATERSHEDS OF THE CHAUTAUQUA REGION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2485702 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2541594 |
| IRS990/NetIncmFromFundraisingEvtGrp/ExclusionAmt | 0 | -12751 |
| IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt | 0 | -12751 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 333 |
| IRS990/NoncashContributionsAmt | 0 | 44500 |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/FundraisingAmt | 0 | 1549 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 1965 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 5657 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 9171 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 3178 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 33 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 23705 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 26916 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsSFAS117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 72727 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 76641 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 3914 |
| IRS990/OtherExpensesGrp/Desc | 0 | LAND & WATER CONSERVATION |
| IRS990/OtherExpensesGrp/Desc | 1 | TRAVEL & TRAINING |
| IRS990/OtherExpensesGrp/Desc | 2 | SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 3 | MISCELLANEOUS |
| IRS990/OtherExpensesGrp/FundraisingAmt | 0 | 3212 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 1 | 3878 |
| IRS990/OtherExpensesGrp/FundraisingAmt | 2 | 380 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1609 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 3765 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 2 | 1733 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 35049 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 6527 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 834 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 3 | 2793 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 35049 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 11348 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 8477 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 4906 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 1 | 900099 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | ANNUAL DINNER/SPECIAL EVENTS |
| IRS990/OtherRevenueMiscGrp/Desc | 1 | MISCELLANEOUS INCOME |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 0 | 3585 |
| IRS990/OtherRevenueMiscGrp/ExclusionAmt | 1 | 598 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 3585 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 1 | 598 |
| IRS990/OtherRevenueTotalAmt | 0 | 4183 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 12517 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 30323 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 76194 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 119034 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | false |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 2596 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 3292 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 9480 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 15368 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 906 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 2267 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 3173 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | LINDA BARBER |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgSrvcAccomActy2Grp/Desc | 0 | LAND CONSERVATION - MAJOR ACCOMPLISHMENT DURING 2017-18: - CONSERVED 230 FEET OF WETLAND LAKESHORE ON CHAUTAUQUA LAKE AND TWENTY ACRES OF FOREST AND WETLAND TRIBUTARY TO CHAUTAUQUA LAKE IN THE TOWN OF CHAUTAUQUA. - TOOK STEPS TOWARDS CONSERVING SEVENTY-SEVEN ACRES OF FOREST AND WETLAND WILDLIFE HABITAT ON CASSADAGA LAKE AND EIGHTY ACRES OF LAND ON PRENDERGAST AND CHENEY CREEKS. - FUNDED EROSION CONTROL CONSERVATION PRACTICES ON TWO CHAUTAUQUA LAKE TRIBUTARIES. - PARTNERED WITH AGENCIES TO INSTALL CONSERVATION PRACTICES AT SEVEN TRIBUTARY SITES OF CHAUTAUQUA LAKE. - CONTINUED DEVELOPEMENT OF PARKING, TRAILS, SIGNAGE, ETC. TO ENHANCE ITS NATURE PRESERVES FOR PUBLIC USE. - UNDERTOOK EROSION CONTROL AND PLANTINGS TO ENHANCE THE HYDROLOGY AND ECOLOGY OF ITS PRESERVES. |
| IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt | 0 | 112349 |
| IRS990/ProgSrvcAccomActy3Grp/Desc | 0 | MUNICIPAL TECHNICAL ASSISTANCE - CWC DIRECTORS AND STAFF PROVIDED SCIENTIFIC TECHNICAL ASSISTANCE FOR THE DEVELOPMENT AND IMPLEMENTATION OF EFFECTIVE WATERSHED POLLUTION CONTROL AND LAKE MANAGEMENT PROGRAMS AND GUIDED PUBLIC INVESTMENT OF CHAUTAUQUA COUNTY WATERWAY ENHANCEMENT FUNDS, INCLUDING PROJECTS IMPLEMENTING THE CHAUTAUQUA LAKE WATERSHED MANAGEMENT PLAN AND THE COMPLETION OF STORMWATER MANAGEMENT PLANS FOR THE BUSTI/LAKEWOOD AND CHAUTAUQUA/MAYVILLE AREAS, AS WELL AS PROVIDING TECHNICAL ASSISTANCE THROUGH THE CHAUTAUQUA COUNTY WATER QUALITY TASK FORCE. |
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| IRS990/PYTotalRevenueAmt | 0 | 571202 |
| IRS990/QuidProQuoContributionsInd | 0 | true |
| IRS990/QuidProQuoContriDisclInd | 0 | true |
| IRS990/RcvFndsToPayPrsnlBnftCntrctInd | 0 | false |
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| IRS990/RegularMonitoringEnfrcInd | 0 | true |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
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| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | false |
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| IRS990ScheduleA/Form990ScheduleAPartVIGrp/ExplanationTxt | 0 | ANNUAL DINNER AND OTHER EVENTS 20,970 GOLF TOURNAMENT NET INCOME (2013-14) 52,547 OTHER INCOME 11,243 |
| IRS990ScheduleA/Form990ScheduleAPartVIGrp/FormAndLineReferenceDesc | 0 | PART II, LINE 10 |
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| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 260822 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 271245 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 2017930 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 2110923 |
| IRS990/ScheduleBRequiredInd | 0 | true |
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| IRS990ScheduleD/DonatedServicesUseFcltsAmt | 0 | 10796 |
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| IRS990ScheduleD/EquipmentGrp/DepreciationAmt | 0 | 21632 |
| IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt | 0 | 27247 |
| IRS990ScheduleD/ExpensesIncurredEnforcementAmt | 0 | 124 |
| IRS990ScheduleD/ExpensesNotReportedAmt | 0 | 23547 |
| IRS990ScheduleD/ExpensesSubtotalAmt | 0 | 381872 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 2247129 |
| IRS990ScheduleD/LandGrp/OtherCostOrOtherBasisAmt | 0 | 2247129 |
| IRS990ScheduleD/OtherExpensesIncludedAmt | 0 | 12751 |
| IRS990ScheduleD/OtherRevenueAmt | 0 | 16665 |
| IRS990ScheduleD/PreservationOpenSpaceInd | 0 | X |
| IRS990ScheduleD/ProtectionNaturalHabitatInd | 0 | X |
| IRS990ScheduleD/RevenueNotReportedAmt | 0 | 27461 |
| IRS990ScheduleD/RevenueSubtotalAmt | 0 | 433850 |
| IRS990ScheduleD/Section170hRqrStsfdInd | 0 | false |
| IRS990ScheduleD/StaffHoursSpentEnforcementCnt | 0 | 5.00 |