Flood & stormwater engineering

Floodplain & StormwaterEngineering.Direct Access to Your Engineer.

HEC-RAS modeling, drainage studies, floodplain analysis, FEMA map revision support, and stormwater design for civil engineering firms, developers, property owners, and public-sector clients.

Your inquiry goes directly to the engineer.

Illustrative example—not a site-specific engineering result.

STA 0+00The disciplines

Four disciplines.One water problem.

Open any of them for the work, the deliverables and the tools behind them.

Floodplain EngineeringCLOMR · LOMR · No-rise · Floodway

Hydrologic and hydraulic analysis, FEMA map revisions and regulatory compliance for projects in and around Special Flood Hazard Areas. From initial screening through the agreed analysis and review scope.

Explore floodplain engineering

HEC-RAS · HEC-HMS · ArcGIS

FEMA floodplain analysisFlood zone limits and base flood elevations to FEMA standards.
CLOMRs & LOMRsMap revision packages, prepared and submitted.
No-rise certificationsModel comparison to determine whether no-rise certification is supported.
Floodway & storageEncroachment reviews and compensating storage.
Stormwater & DrainageStudies · Ponds · Culverts

Drainage studies, stormwater management reports, detention and retention pond design, and culvert and channel hydraulics, from early feasibility through final permit.

Explore stormwater & drainage

HEC-HMS · TR-55 · Rational method · HEC-RAS

Hydrologic analysisPeak flows and runoff volumes for design storms.
Stormwater reportsPre and post development, documented for permits.
Pond designDetention and retention sizing and routing.
Culverts & channelsCapacity, tailwater and downstream impact.
Development SupportFeasibility · Due diligence · Entitlement

Early engineering on floodplain and drainage constraints, to identify constraints and permitting considerations. Early analysis helps inform project decisions.

Explore development support

Screening · Assessment · Agency coordination

Feasibility & due diligenceFlood zone and drainage risk before you invest.
Site floodplain assessmentZones, BFEs and floodway limits on your parcel.
Entitlement supportStudies for rezoning and entitlement submittals.
Agency coordinationReview responses within the agreed scope.
Municipal SupportMaster plans · Complaints · Grants

An on-call floodplain and stormwater engineer for cities, counties and public works departments that don’t carry one on staff.

Explore municipal support

Capacity analysis · CIP planning · FEMA mitigation grants

Floodplain managementMap revisions, ordinance and NFIP support.
Drainage master planningWatershed studies and prioritized capital plans.
Flooding complaintsField assessment, analysis and documented findings.
Grant exhibitsTechnical support for FEMA mitigation funding.

Water follows the math. We do the math first.

Matthew Creel, Principal Engineer
STA 0+00Your engineer

Direct access.Clear communication.

Matthew Creel, P.E.
Principal Engineer
Texas-licensed professional engineer

I’m Matthew Creel, the engineer behind Creel Flood & Stormwater Engineering. My work focuses on hydrology, hydraulics, floodplain analysis, and stormwater design.

When you contact Creel, you speak directly with the engineer doing the work.

Meet Matthew

STA 0+00How a project moves

Five sheets.A clear process.

  1. 01

    Flood zones, soils, outfalls and the rules that apply, during initial screening.

  2. 02

    Rainfall to runoff to water surface, in HEC-HMS and HEC-RAS.

  3. 03

    Ponds, pipes and grading that make the numbers work.

  4. 04

    A sealed report written for the reviewer who has to approve it.

  5. 05

    Agency coordination and review responses are provided as defined in the agreed scope.

Illustrative example—not a site-specific engineering result.

EXISTING ROAD · 60′ R.O.W.25252525303035262728PARCEL ±7.6 ACZONE AE1% ANNUAL CHANCEFLOODWAYZONE XFLOWN050100200FTELEV. FT NAVD88 · 1 FT CONTOURS5+0010+0015+0035075012001600HEC-RAS · XS BY RIVER STATION (FT)FFE 39.5FFE 39.5FFE 38.0FFE 36.0FFE 35.5WET DETENTION1.6 AC-FTNWL 27.5TOB 31.5 · DHW 30.524″ RCPOCS · WEIR 27.536″ RCPHEADWALLINV 19.8DRAINAGE REPORTPRE / POST · 25-YR 24-HR STORM10203010111213141516HRCFSPRE 18.0POST IN 25.6POST ROUTED 16.9 CFS ≤ PRECREELSEALED · P.E.REVIEW COMMENT 3 · TAILWATER AT OUTFALLRESPONSE: ROUTED WITH 1% WSEL 26.8 AT RS 930.PEAK 16.9 CFS ≤ PRE 18.0 CFS. CLOSED.REVIEWED
ProjectExample site · illustrative
SheetC-01
DatumNAVD88
StageScreen
Understanding flood probability

The “100-year flood”isn’t once a century.

It’s a flood with a 1% chance of happening in any given year. Pick a storm and watch the water find its level.

26%The chance a 1% flood (100-year) happens at least once over a 30-year mortgage.
Illustrative example—not a site-specific engineering result.Looking downstream
Pick a storm
Chance in any year1%
Floodplain width0 ft
Finished floor+1.0 ft
Depths are examples for teaching. Real answers come from a model of your site.
STA 0+00Questions

Straightanswers.

What should I send to get started?

Send the project location, a brief description, and any important deadline. Mention any surveys, plans, reports, or agency comments you already have. You do not need a complete package to make an initial inquiry.

Can Creel support our civil engineering team?

Creel provides specialized hydrologic and hydraulic support that can be scoped around your team’s project requirements and deliverables.

How are fees and schedules established?

Each assignment is evaluated individually. The proposal establishes the scope, deliverables, schedule, fees, and payment terms.

Does submitting an inquiry start an engineering engagement?

No. An inquiry starts a conversation. Engineering services begin under a separate written agreement.

STA 0+00Project inquiry

Tell Me AboutYour Project

Send the project location, a brief description, and any important deadline. I’ll review the information and contact you to discuss the scope and next steps.

Direct contactYour inquiry goes directly to the engineer.

Fields marked * are required.

Supporting plans, surveys, and reports can be requested after the initial inquiry.

Please do not include confidential case materials. By submitting, you acknowledge the privacy notice. An inquiry does not establish an engineering engagement.

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