Civic Intelligence

Willow Waterhole Greenspace Conservancy Inc.

990 • Fiscal year 2024 • EIN 76-0685448

Jan 01, 2024 to Dec 31, 2024 • Filed on Nov 15, 2025

5600 S Willow Drive 113Houston, TX 77035

(281) 990-1459

Siviq Scores

Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.

Liabilities / Assets

20th percentile

0.00x

Higher debt load relative to assets than 20% of similar nonprofits.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2024

Liabilities / Revenue

20th percentile

0.00x

Higher debt load relative to revenue than 20% of similar nonprofits.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2024

Net Margin

2nd percentile

-188%

Higher net margin than 2% of similar nonprofits.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2024

Top Officer Pay

46th percentile

$42,692

Higher top officer pay than 46% of similar nonprofits.

Top officer pay equals 2.7% of source-year revenue.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2024

Asset Growth

2nd percentile

-46%

Faster asset growth than 2% of similar nonprofits.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Revenue Growth

45th percentile

5.2%

Faster revenue growth than 45% of similar nonprofits.

2024 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Assets

Down

$3,596,696

Down $3,008,646 (-46%) from 2023

Net Assets

Down

$3,595,479

Down $3,009,863 (-46%) from 2023

Liabilities

Up

$1,217

Up $1,217 from 2023

Revenue

Up

$1,603,461

Up $79,587 (+5.2%) from 2023

Expenses

Up

$4,613,324

Up $2,768,187 (+150%) from 2023

Net Income

Down

-$3,009,863

Down $2,688,600 (-837%) from 2023

Historical Trend

Balance Sheet Trend

The highlighted filing sits inside the broader history for assets, liabilities, and net assets.

$8.0M$6.0M$4.0M$2.0M$0Assets 2011: $43,175Liabilities 2011: $02011Assets 2012: $49,471Liabilities 2012: $02012Assets 2013: $32,286Net Assets 2013: $32,2862013Assets 2015: $25,615Liabilities 2015: $0Net Assets 2015: $25,6152015Assets 2018: $58,335Liabilities 2018: $0Net Assets 2018: $58,3352018Assets 2019: $59,693Liabilities 2019: $0Net Assets 2019: $59,6932019Assets 2020: $95,949Liabilities 2020: $0Net Assets 2020: $95,9492020Assets 2021: $2,113,019Liabilities 2021: $0Net Assets 2021: $2,113,0192021Assets 2022: $6,926,605Liabilities 2022: $0Net Assets 2022: $6,926,6052022Assets 2023: $6,605,342Liabilities 2023: $0Net Assets 2023: $6,605,3422023Assets 2024: $3,596,696Liabilities 2024: $1,217Net Assets 2024: $3,595,4792024

Highlighted filing

2024

Assets$3,596,696
Liabilities$1,217
Net Assets$3,595,479

Operations Trend

Revenue, expenses, and net income across loaded years, with this filing highlighted.

$10M$5.0M$0-$5.0MRevenue 2011: $6,914Expenses 2011: $3,827Net Income 2011: $3,0872011Revenue 2012: $11,605Expenses 2012: $5,309Net Income 2012: $6,2962012Revenue 2013: $31,979Expenses 2013: $49,164Net Income 2013: -$17,1852013Revenue 2015: $47,596Expenses 2015: $67,964Net Income 2015: -$20,3682015Revenue 2018: $48,476Expenses 2018: $33,824Net Income 2018: $14,6522018Revenue 2019: $36,434Expenses 2019: $35,959Net Income 2019: $4752019Revenue 2020: $56,002Expenses 2020: $19,746Net Income 2020: $36,2562020Revenue 2021: $2,057,125Expenses 2021: $41,055Net Income 2021: $2,016,0702021Revenue 2022: $5,291,403Expenses 2022: $477,817Net Income 2022: $4,813,5862022Revenue 2023: $1,523,874Expenses 2023: $1,845,137Net Income 2023: -$321,2632023Revenue 2024: $1,603,461Expenses 2024: $4,613,324Net Income 2024: -$3,009,8632024

Highlighted filing

2024

Revenue$1,603,461
Expenses$4,613,324
Net Income-$3,009,863
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 15, 2025
Return Version
2024v5.2
Gross Receipts
$1,603,461
Mission and Program Overview

Mission

Focus Areas Educate the community about environmental economic benefits of flood mitigation.Support the use of urban parks and embrace green.Advocate The power rests in your hands people to put a world-class park at your fingertips.Values Leadership / Stewardship/ Vision

Protect and restore Willow Waterhole to reduce flooding and connect people with nature.

Balance Sheet Detail
LineBeginningEndChange
Assets
Savings and Temporary Cash Investments$5,842,089$3,029,054▼ $2,813,035
Cash and Non-Interest-Bearing Accounts$763,253$483,066▼ $280,187
Land, Buildings, and Equipment, Net$0$83,276▲ $83,276
Prepaid Expenses and Deferred Charges-$1,300-
Total Assets$6,605,342$3,596,696▼ $3,008,646
Liabilities
Accounts Payable and Accrued Expenses-$1,217-
Total Liabilities$0$1,217▲ $1,217
Net Assets / Fund Balance
Net Assets With Donor Restrictions$6,200,556$2,924,309▼ $3,276,247
Net Assets Without Donor Restrictions$404,786$671,170▲ $266,384
Total Net Assets Fund Balance$6,605,342$3,595,479▼ $3,009,863
Total Liabilities and Net Assets / Fund Balance$6,605,342$3,596,696▼ $3,008,646

Asset Categories

AssetBook ValueDepreciationBasis
Equipment$78,713$5,702$84,415
Leasehold Improvements$4,563$736$5,299
Compensation and Service Providers

Employees

NameTitleFull / Part TimeBaseTotal
Katherine NewtonExecutive DirectorFT$42,692$42,692

Board Members and Trustees

Revenue and Support

Revenue Composition

Contributions and Grants
$1,416,493
Program Service Revenue
$0
Investment Income
$186,968
Other Revenue
$0
All Other Contributions
$408,443
Change in Net Assets
$-3,009,863
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$4,528,366
Total Fundraising Expense$61,979
Salaries, Compensation, and Employee Benefits$45,958
Professional Fundraising Fees$39,000
Grants and Similar Amounts Paid$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Current Officers, Directors, Trustees, and Key Employees$17,077$4,269$21,346$42,692
Fees for Services Professional Fundraising--$39,000$39,000
Office Expenses$23,901$5,777-$29,678
Occupancy$17,662$8,135-$25,797
Insurance$9,191$2,834-$12,025
Fees for Services Accounting-$8,975-$8,975
Depreciation Depletion-$6,438-$6,438
Other Expenses$2,715$1,150-$3,865
Information Technology$1,962$1,609-$3,571
Payroll Taxes$1,306$327$1,633$3,266
All Other Expenses$1,830$319-$2,149
Advertising$932$290-$1,222
Fees for Services Other$100$402-$502
Total Functional Expenses$4,508,106$43,239$61,979$4,613,324
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
Yes

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$39,000
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
Backup withholding compliance
Yes
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
Yes
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section B, line 11B

A preliminary draft of the Form 990 is prepared by independent CPA. This draft is reviewed by the Finance Committee Chair and all necessary changes are then made. A review draft is distributed to all members of the Board of Directors with a three (3) day review period. A majority of Board members must vote to approve and submit.

Form 990, Part VI, Section B, line 12C

All budgeted transactions are reviewed by the Board President and Treasurer for potential conflicts of interest. If a conflict is identified in a policy matter, that Board member would be directed to abstain from voting.

Form 990, Part VI, Section B, line 15A

The Executive Director's compensation is established at levels comparable to similar organizations in the Houston area and is subject to review and approval by the Board of Directors.

Form 990, Part VI, Section C, line 19

The organization's audited financial statements are made publicly available on its website.

Filing and Contact Details

Filer

Filer Name
Willow Waterhole Greenspace Conservancy
EIN
76-0685448
Phone
2819901459
Address
5600 S Willow Drive 113, Houston, TX 77035

Signing Officer

Name
David Naff
Title
President
Phone
2819901459
Signed
2025-11-15
Discuss with paid preparer
Yes

Organization Details

Principal Officer
David Naff
Formed
2001
Legal Domicile
TX
Voting Board Members
15
Independent Board Members
15
Employees
1
Volunteers
120

Preparer

Firm
Blazek & Vetterling
Address
2900 Weslayan Suite 200, Houston, TX 77027
Preparer
Barbara Murphy
Phone
7134395739
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IRS990/Desc0Conservation and Maintenance: Willow Waterhole Greenspace Conservancy encompasses six interconnected lakes surrounded by trails, gardens, and wildlife habitats. With over eight miles of accessible walking paths, clear wayfinding, and numerous amenities, it offers a one-of-a-kind outdoor experience in Houston. Designed to manage stormwater while sustaining native ecosystems, the Greenway blends conservation, recreation, and discovery. The detention basin's six lakes capture and temporarily store excess water from Willow Waterhole Bayou, reducing flooding in the Brays Bayou watershed before gradually releasing the water back once levels recede.
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IRS990/MissionDesc0The Willow Waterhole Greenspace Conservancy ("Willow Waterhole") serves as the leading advocate for public greenspace improvements and nature preservation at the 291-acre Willow Waterhole Greenway. (See Schedule O)Willow Waterhole partners with community residents, governmental entities, and environmental organizations to develop amenities for hiking, biking, picnicking, bird watching, fishing, and canoeing/kayaking and to preserve native prairies, forests, and wetlands.
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IRS990/OrganizationFollowsFASB117Ind0X
IRS990/OtherChangesInNetAssetsAmt00
IRS990/OtherExpensesGrp/Desc0Capital improvements
IRS990/OtherExpensesGrp/Desc1Signs
IRS990/OtherExpensesGrp/Desc2Park improvements
IRS990/OtherExpensesGrp/Desc3Artwork
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt02714
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt11150
IRS990/OtherExpensesGrp/ProgramServicesAmt04096098
IRS990/OtherExpensesGrp/ProgramServicesAmt1185302
IRS990/OtherExpensesGrp/ProgramServicesAmt2150030
IRS990/OtherExpensesGrp/ProgramServicesAmt32715
IRS990/OtherExpensesGrp/TotalAmt04096098
IRS990/OtherExpensesGrp/TotalAmt1188016
IRS990/OtherExpensesGrp/TotalAmt2150030
IRS990/OtherExpensesGrp/TotalAmt33865
IRS990/OwnWebsiteInd0X
IRS990/PartialLiquidationInd00
IRS990/PayPremiumsPrsnlBnftCntrctInd00
IRS990/PayrollTaxesGrp/FundraisingAmt01633
IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt0327
IRS990/PayrollTaxesGrp/ProgramServicesAmt01306
IRS990/PayrollTaxesGrp/TotalAmt03266
IRS990/PoliticalCampaignActyInd00
IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt01300
IRS990/PrincipalOfficerNm0David Naff
IRS990/ProfessionalFundraisingInd01
IRS990/ProgSrvcAccomActy2Grp/Desc0Capital Improvements: Capital improvements for the Willow Waterhole Greenspace Conservancy include projects that enhance both conservation and public access across the park's six lakes and surrounding habitats. These efforts encompass the construction of new paved walking and biking trails that connect key areas of the greenway, along with the addition of amenities such as parking lots, picnic areas, fishing piers, way-finding signage, benches, and trailheads to support visitor use and enjoyment. They also include land acquisition and expansion of the greenway to protect natural habitats, increase flood control capacity, and preserve native prairie reserves. These infrastructure improvements restore and sustain the ecological health of environment while providing meaningful public access to nature.
IRS990/ProgSrvcAccomActy2Grp/ExpenseAmt04097404
IRS990/ProhibitedTaxShelterTransInd00
IRS990/PYBenefitsPaidToMembersAmt00
IRS990/PYContributionsGrantsAmt01190959
IRS990/PYExcessBenefitTransInd00
IRS990/PYGrantsAndSimilarPaidAmt00
IRS990/PYInvestmentIncomeAmt0327228
IRS990/PYOtherExpensesAmt01796637
IRS990/PYOtherRevenueAmt05687
IRS990/PYProgramServiceRevenueAmt00
IRS990/PYRevenuesLessExpensesAmt0-321263
IRS990/PYSalariesCompEmpBnftPaidAmt00
IRS990/PYTotalExpensesAmt01845137
IRS990/PYTotalProfFndrsngExpnsAmt048500
IRS990/PYTotalRevenueAmt01523874
IRS990/QuidProQuoContributionsInd01
IRS990/QuidProQuoContriDisclInd01
IRS990/RcvFndsToPayPrsnlBnftCntrctInd00
IRS990/ReconcilationRevenueExpnssAmt0-3009863
IRS990/RegularMonitoringEnfrcInd01
IRS990/RelatedEntityInd00
IRS990/RelatedOrganizationCtrlEntInd00
IRS990/ReportInvestmentsOtherSecInd00
IRS990/ReportLandBuildingEquipmentInd01
IRS990/ReportOtherAssetsInd00
IRS990/ReportOtherLiabilitiesInd00
IRS990/ReportProgramRelatedInvstInd00
IRS990/SavingsAndTempCashInvstGrp/BOYAmt05842089
IRS990/SavingsAndTempCashInvstGrp/EOYAmt03029054
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt01409493
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt01230843
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt05347095
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt02073389
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt059772
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt010120592
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt0186968
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt0327228
IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt0514196
IRS990ScheduleA/PublicOrganization170Ind0X
IRS990ScheduleA/PublicSupportCY170Pct00.54780
IRS990ScheduleA/PublicSupportPY170Pct00.87790
IRS990ScheduleA/PublicSupportTotal170Amt05832777
IRS990ScheduleA/SubstantialContributorsTotAmt04287815
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind0X
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt01409493
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt01230843
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt05347095
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt02073389
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt059772
IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt010120592
IRS990ScheduleA/TotalSupportAmt010646806
IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/CurrentTaxYearAmt06331
IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/CurrentTaxYearMinus1YearAmt05687
IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/TotalAmt012018
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt0RESTRICTED
IRS990/ScheduleBRequiredInd01
IRS990ScheduleD/EquipmentGrp/BookValueAmt078713
IRS990ScheduleD/EquipmentGrp/DepreciationAmt05702
IRS990ScheduleD/EquipmentGrp/OtherCostOrOtherBasisAmt084415
IRS990ScheduleD/LeaseholdImprovementsGrp/BookValueAmt04563
IRS990ScheduleD/LeaseholdImprovementsGrp/DepreciationAmt0736
IRS990ScheduleD/LeaseholdImprovementsGrp/OtherCostOrOtherBasisAmt05299
IRS990ScheduleD/TotalBookValueLandBuildingsAmt083276
IRS990ScheduleG/AgrmtProfFundraisingActyInd01
IRS990ScheduleG/EmailSolicitationsInd0X
IRS990ScheduleG/FundraiserActivityInfoGrp/ActivityTxt0Grant advisory and writing
IRS990ScheduleG/FundraiserActivityInfoGrp/FundraiserControlOfFundsInd00
IRS990ScheduleG/FundraiserActivityInfoGrp/GrossReceiptsAmt0385000
IRS990ScheduleG/FundraiserActivityInfoGrp/NetToOrganizationAmt0346000
IRS990ScheduleG/FundraiserActivityInfoGrp/OrganizationBusinessName/BusinessNameLine1Txt0Dawn Blitz Consulting
IRS990ScheduleG/FundraiserActivityInfoGrp/RetainedByContractorAmt039000
IRS990ScheduleG/FundraiserActivityInfoGrp/USAddress/AddressLine1Txt0430 Cortland St
IRS990ScheduleG/FundraiserActivityInfoGrp/USAddress/CityNm0Houston
IRS990ScheduleG/FundraiserActivityInfoGrp/USAddress/StateAbbreviationCd0TX
IRS990ScheduleG/FundraiserActivityInfoGrp/USAddress/ZIPCd077007
IRS990ScheduleG/InPersonSolicitationsInd0X
IRS990ScheduleG/LicensedStatesCd0TX
IRS990ScheduleG/SolicitationOfNonGovtGrantsInd0X
IRS990ScheduleG/TotalGrossReceiptsAmt0385000
IRS990ScheduleG/TotalNetToOrganizationAmt0346000
IRS990ScheduleG/TotalRetainedByContractorsAmt039000
IRS990/ScheduleJRequiredInd00
IRS990/ScheduleORequiredInd01
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0A preliminary draft of the Form 990 is prepared by independent CPA. This draft is reviewed by the Finance Committee Chair and all necessary changes are then made. A review draft is distributed to all members of the Board of Directors with a three (3) day review period. A majority of Board members must vote to approve and submit.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1All budgeted transactions are reviewed by the Board President and Treasurer for potential conflicts of interest. If a conflict is identified in a policy matter, that Board member would be directed to abstain from voting.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2The Executive Director's compensation is established at levels comparable to similar organizations in the Houston area and is subject to review and approval by the Board of Directors.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3The organization's audited financial statements are made publicly available on its website.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0Form 990, Part VI, Section B, line 11b
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1Form 990, Part VI, Section B, line 12c
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2Form 990, Part VI, Section B, line 15a
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3Form 990, Part VI, Section C, line 19
IRS990/SchoolOperatingInd00
IRS990/SignificantChangeInd00
IRS990/SignificantNewProgramSrvcInd00
IRS990/SubjectToExcsTaxNetInvstIncInd00
IRS990/SubjectToProxyTaxInd00
IRS990/SubjToTaxRmnrtnExPrchtPymtInd00
IRS990/TaxablePartyNotificationInd00
IRS990/TaxExemptBondsInd00
IRS990/TerminateOperationsInd00
IRS990/TotalAssetsBOYAmt06605342
IRS990/TotalAssetsEOYAmt03596696

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