Civic Intelligence

National Hydrologic Warning Council Inc

EIN 20-5867107 • 501(c)3 • Denver, CO

Profile

The national hydrologic warning council (nhwc), with membership across the united states and around the world, is a non-profit organization dedicated to assisting emergency and environmental management officials by providing expert advice on the use of real-time, high quality hydrologic information from automated remote data systems, with the goals of protecting lives, property, and the environment.

2480 W 26th Avenue 156-bDenver, CO 80211-5304

www.hydrologicwarning.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

60th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2024

Liabilities / Revenue

62nd percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2024

Net Margin

10th percentile

-100%

Higher net margin than 10% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Top Officer Pay

81st percentile

$0

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2024

Asset Growth

29th percentile

-26%

Faster asset growth than 29% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

Revenue Growth

9th percentile

-80%

Faster revenue growth than 9% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets60th percentile

Assets

Down

$91,738

Down $32,070 (-26%) from 2023

Liabilities

Flat

$0

Flat from 2023

Net Assets

Down

$91,738

Down $32,070 (-26%) from 2023

Operations
Liabilities / Revenue62nd percentileNet Margin10th percentile

Revenue

Down

$32,079

Down $129,673 (-80%) from 2023

Expenses

Down

$64,149

Down $85,748 (-57%) from 2023

Net Income

Down

-$32,070

Down $43,925 (-371%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth29th percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$150K$100K$50K$0Assets 2014: $45,108Liabilities 2014: $02014Assets 2015: $43,995Liabilities 2015: $02015Assets 2016: $46,739Net Assets 2016: $46,7392016Assets 2017: $69,629Liabilities 2017: $02017Assets 2018: $93,410Liabilities 2018: $0Net Assets 2018: $93,4102018Assets 2019: $94,124Liabilities 2019: $0Net Assets 2019: $94,1242019Assets 2022: $111,953Liabilities 2022: $0Net Assets 2022: $111,9532022Assets 2023: $123,808Liabilities 2023: $0Net Assets 2023: $123,8082023Assets 2024: $91,738Liabilities 2024: $0Net Assets 2024: $91,7382024

Highlighted filing

2024

Assets$91,738
Liabilities$0
Net Assets$91,738
Open 2024 Filing

Operations Trend

Revenue Growth9th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$200K$150K$100K$50K$0-$50KRevenue 2014: $4,871Expenses 2014: $3,515Net Income 2014: $1,3562014Revenue 2015: $31,384Expenses 2015: $32,497Net Income 2015: -$1,1132015Revenue 2016: $9,208Expenses 2016: $6,464Net Income 2016: $2,7442016Revenue 2017: $34,028Expenses 2017: $11,138Net Income 2017: $22,8902017Revenue 2018: $54,866Expenses 2018: $31,085Net Income 2018: $23,7812018Revenue 2019: $160,240Expenses 2019: $159,526Net Income 2019: $7142019Revenue 2022: $51,062Expenses 2022: $54,584Net Income 2022: -$3,5222022Revenue 2023: $161,752Expenses 2023: $149,897Net Income 2023: $11,8552023Revenue 2024: $32,079Expenses 2024: $64,149Net Income 2024: -$32,0702024

Highlighted filing

2024

Revenue$32,079
Expenses$64,149
Net Income-$32,070
Open 2024 Filing

Filings

Most recent year

2024 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$91,738
Liabilities
$0
Net assets
$91,738
Revenue
$32,079
Expenses
$64,149
Net income
-$32,070
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$0.92$0.00$0.92$0.32$0.64$0.32
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.24$0.00$1.24$1.62$1.50$0.12
2022XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.12$0.00$1.12$0.51$0.55$0.04
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.94$0.00$0.94$1.60$1.60$0.01
2018Detailed filing. Detailed filing data is available for this year.$0.93$0.00$0.93$0.55$0.31$0.24
2017Summary only. Only limited summary data is available for this year.$0.70$0.00$0.34$0.11$0.23
2016XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.47$0.47$0.09$0.06$0.03
2015Summary only. Only limited summary data is available for this year.$0.44$0.00$0.31$0.32$0.01
2014Summary only. Only limited summary data is available for this year.$0.45$0.00$0.05$0.04$0.01
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Jul 23, 2025
Return Version
2024v5.2
Gross Receipts
$32,079
Mission and Program Overview

Mission

See attached description on Schedule O.

The national hydrologic warning council (nhwc), with membership across the united states and around the world, is a non-profit organization dedicated to assisting emergency and environmental management officials by providing expert advice on the use of real-time, high quality hydrologic information from automated remote data systems, with the goals of protecting lives, property, and the environment.

Program Services

DescriptionGrantsExpenses
NATIONAL CONFERENCE - NHWC CONFERENCES ARE HELD ON A BIENNIAL BASIS (EVERY TWO YEARS), ALTERNATING WITH THE ALERT USER'S GROUP (AUG) CONFERENCE. THEY ARE LOOSELY ON A EAST - CENTRAL - WEST ROTATION. THE NHWC HOSTS THIS CONFERENCE TO ASSIST LOCAL WATER RESOURCE MANAGERS AND EMERGENCY MANAGEMENT OFFICIALS IN THE COLLECTION, EVALUATION, AND DISSEMINATION OF REAL-TIME HYDROLOGIC DATA TO PROTECT LIVES AND PROPERTY.$0$35,107
TEXAS WORKSHOP - THIS ANNUAL 2-DAY INTERACTIVE WORKSHOP WILL FOCUS ON RECENT FLOODING IN THE STATE OF TEXAS, RECOVERY EFFORTS, AND NEW INITIATIVES SINCE HURRICANE HARVEY, AS WELL AS FLOOD WARNING SYSTEM PERFORMANCE AND MAINTENANCE, PUBLIC COMMUNICATION DURING DISASTERS, DAM SAFETY, RESERVOIR OPERATIONS, AND FLOOD FORECASTING. OTHER TOPICS INCLUDE NOAA ATLAS 14 AND ALERT2 IMPROVEMENTS AND UPDATES.$0$17,443
Compensation and Service Providers
Top Officer Pay81st percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
BRUCE RINDAHLVice President-$0--
BRAD HEILWAGENPresident-$0--
FRITZ LAWDirector West Region-$0--
JAMES STUARTDirector At Large-$0--
MARK MOORETreasurer-$0--
JUNE WOLFE IIISecretary-$0--
ROB HARTMANDirector At Large-$0--
MATT FRIEDBERGDirector Southwest Region-$0--
ANDREW TETERDirector East Region-$0--
Filing and Contact Details

Filer

Filer Name
National Hydrologic Warning Council Inc
EIN
20-5867107
Phone
3034556277
Address
2480 W 26TH AVENUE 156-B, DENVER, CO 80211-5304

Signing Officer

Name
Mark Moore
Title
Treasurer
Phone
3034556277
Signed
2025-07-23
Discuss with paid preparer
Yes

Preparer

Firm
Trout CPA
Address
1705 OREGON PIKE, LANCASTER, PA 17601
Preparer
Ann Shenk
Phone
7175692900
Supplemental Narrative

Additional Explanations

Form 990-ez, Part I, Line 4 - Other Investment Income

“Description: interest. Amount: 5.”

Form 990-ez, Part I, Line 16 - Other Expenses

“Description: merchant and bank fees. Amount: 1,571. Description: conference expenses. Amount: 35,107. Description: workshop expenses. Amount: 17,443. Description: insurance. Amount: 1,122. Description: meetings. Amount: 3,413. Description: professional fees. Amount: 3,300. Description: office supplies. Amount: 500. Total to form 990-ez, line 16: 62,456.”

Raw XML Appendix207 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

Path#Value
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt10
IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt20
IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt30
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt50
IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt60
IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt70
IRS990EZ/OfficerDirectorTrusteeEmplGrp/ExpenseAccountOtherAllwncAmt80
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm0BRUCE RINDAHL
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm1BRAD HEILWAGEN
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm2FRITZ LAW
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm3JAMES STUART
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm4MARK MOORE
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm5JUNE WOLFE III
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm6ROB HARTMAN
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm7MATT FRIEDBERG
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm8ANDREW TETER
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt0VICE PRESIDENT
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt1PRESIDENT
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt2DIRECTOR WEST REGION
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt3DIRECTOR AT LARGE
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt4TREASURER
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt5SECRETARY
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt6DIRECTOR AT LARGE
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt7DIRECTOR SOUTHWEST REGION
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt8DIRECTOR EAST REGION
IRS990EZ/OperateHospitalInd00
IRS990EZ/Organization501c3Ind0X
IRS990EZ/OrganizationDissolvedEtcInd00
IRS990EZ/OrganizationHadUBIInd00
IRS990EZ/OtherChangesInNetAssetsAmt00
IRS990EZ/OtherExpensesTotalAmt062456
IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt0NONE
IRS990EZ/PartVIOfCompOfHghstPdEmplTxt0NONE
IRS990EZ/PoliticalCampaignActyInd00
IRS990EZ/PrimaryExemptPurposeTxt0THE NATIONAL HYDROLOGIC WARNING COUNCIL (NHWC), WITH MEMBERSHIP ACROSS THE UNITED STATES AND AROUND THE WORLD, IS A NON-PROFIT ORGANIZATION DEDICATED TO ASSISTING EMERGENCY AND ENVIRONMENTAL MANAGEMENT OFFICIALS BY PROVIDING EXPERT ADVICE ON THE USE OF REAL-TIME, HIGH QUALITY HYDROLOGIC INFORMATION FROM AUTOMATED REMOTE DATA SYSTEMS, WITH THE GOALS OF PROTECTING LIVES, PROPERTY, AND THE ENVIRONMENT.
IRS990EZ/ProgramServiceRevenueAmt019794
IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt0NATIONAL CONFERENCE - NHWC CONFERENCES ARE HELD ON A BIENNIAL BASIS (EVERY TWO YEARS), ALTERNATING WITH THE ALERT USER'S GROUP (AUG) CONFERENCE. THEY ARE LOOSELY ON A EAST - CENTRAL - WEST ROTATION. THE NHWC HOSTS THIS CONFERENCE TO ASSIST LOCAL WATER RESOURCE MANAGERS AND EMERGENCY MANAGEMENT OFFICIALS IN THE COLLECTION, EVALUATION, AND DISSEMINATION OF REAL-TIME HYDROLOGIC DATA TO PROTECT LIVES AND PROPERTY.
IRS990EZ/ProgramSrvcAccomplishmentGrp/DescriptionProgramSrvcAccomTxt1TEXAS WORKSHOP - THIS ANNUAL 2-DAY INTERACTIVE WORKSHOP WILL FOCUS ON RECENT FLOODING IN THE STATE OF TEXAS, RECOVERY EFFORTS, AND NEW INITIATIVES SINCE HURRICANE HARVEY, AS WELL AS FLOOD WARNING SYSTEM PERFORMANCE AND MAINTENANCE, PUBLIC COMMUNICATION DURING DISASTERS, DAM SAFETY, RESERVOIR OPERATIONS, AND FLOOD FORECASTING. OTHER TOPICS INCLUDE NOAA ATLAS 14 AND ALERT2 IMPROVEMENTS AND UPDATES.
IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt00
IRS990EZ/ProgramSrvcAccomplishmentGrp/GrantsAndAllocationsAmt10
IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt035107
IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt117443
IRS990EZ/ProhibitedTaxShelterTransInd00
IRS990EZ/RelatedOrganizationCtrlEntInd00
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IRS990EZ/SchoolOperatingInd00
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IRS990EZ/TanningServicesProvidedInd00
IRS990EZ/TaxImposedOnOrganizationMgrAmt00
IRS990EZ/TaxImposedUnderIRC4911Amt00
IRS990EZ/TaxImposedUnderIRC4912Amt00
IRS990EZ/TaxImposedUnderIRC4955Amt00
IRS990EZ/TaxReimbursedByOrganizationAmt00
IRS990EZ/TotalExpensesAmt064149
IRS990EZ/TotalProgramServiceExpensesAmt052550
IRS990EZ/TotalRevenueAmt032079
IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd00
IRS990EZ/TypeOfOrganizationCorpInd0X
IRS990EZ/WebsiteAddressTxt0WWW.HYDROLOGICWARNING.ORG
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IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt013900
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IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt015557
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IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt013622
IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt0210160
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IRS990ScheduleA/InvestmentIncomePYPct00.00030
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0DESCRIPTION: INTEREST. AMOUNT: 5.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1DESCRIPTION: MERCHANT AND BANK FEES. AMOUNT: 1,571. DESCRIPTION: CONFERENCE EXPENSES. AMOUNT: 35,107. DESCRIPTION: WORKSHOP EXPENSES. AMOUNT: 17,443. DESCRIPTION: INSURANCE. AMOUNT: 1,122. DESCRIPTION: MEETINGS. AMOUNT: 3,413. DESCRIPTION: PROFESSIONAL FEES. AMOUNT: 3,300. DESCRIPTION: OFFICE SUPPLIES. AMOUNT: 500. TOTAL TO FORM 990-EZ, LINE 16: 62,456.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990-EZ, PART I, LINE 4 - OTHER INVESTMENT INCOME
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990-EZ, PART I, LINE 16 - OTHER EXPENSES
TransferPrsnlBnftContractsDecl/DeclarationDesc0THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0MARK MOORE
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0TREASURER
ReturnHeader/BusinessOfficerGrp/PhoneNum03034556277
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-07-23
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0NATIONAL HYDROLOGIC WARNING COUNCIL INC
ReturnHeader/Filer/BusinessNameControlTxt0NATI
ReturnHeader/Filer/EIN0205867107
ReturnHeader/Filer/PhoneNum03034556277
ReturnHeader/Filer/USAddress/AddressLine1Txt02480 W 26TH AVENUE 156-B
ReturnHeader/Filer/USAddress/CityNm0DENVER
ReturnHeader/Filer/USAddress/StateAbbreviationCd0CO
ReturnHeader/Filer/USAddress/ZIPCd0802115304
ReturnHeader/IRSResponsiblePrtyInfoCurrInd01
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0231551315
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0TROUT CPA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt01705 OREGON PIKE
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0LANCASTER
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0PA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd017601
ReturnHeader/PreparerPersonGrp/PhoneNum07175692900
ReturnHeader/PreparerPersonGrp/PreparationDt02025-07-23
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0ANN SHENK
ReturnHeader/ReturnTs02025-08-01T11:02:06-05:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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