Water Resources

Halff’s holistic water resources philosophy combines environmental sensitivity with innovative technical expertise to preserve and often control and contain the valuable resource that is water. The ability to protect this resource while managing its potentially devastating effects requires an ingenuity that can only be cultivated through years of study and experience. Halff’s team of highly skilled, tenured professionals offers a wide range of time-tested solutions – from managing the flow of water to protecting the quality of this precious commodity.

Contact

Info-Water@Halff.com

 

Services

STORMWATER

  • Stormwater drainage master plans
    Integrated stormwater management plans
  • Drainage and watershed feasibility studies
  • Development criteria and regulation
  • Low impact development standards
  • Drainage criteria manuals and guidance documents
  • Land use and storm water fee studies
  • Emergency response for storm damage estimating

 

FLOODPLAIN MANAGEMENT, STUDIES, AND MAPPING

  • Floodplain reclamation
  • FEMA Map Revisions (LOMC including CLOMR, LOMR, and LOMA)
  • Countywide/basin watershed planning
  • FEMA Flood Insurance Studies (FIS)
  • FEMA Flood Insurance Rate Maps (FIRMs)
  • FEMA Risk MAP products
  • Cooperating Technical Partner (CTP) programs
  • FEMA Community Rating System (CRS) applications/cycle visit assistance
  • FEMA Community Assistance Visit (CAV) assistance
  • Floodplain study reviews
  • Public outreach support

 

FLOOD CONTROL PLANNING AND DESIGN

  • Complex storm drainage systems
  • Storm sewer rehabilitation designs
  • Capital Improvement Programs (CIP)
  • Channel improvements
    • USACE Section 404 Permitting
    • Stream stability analysis
    • Natural Channel Designs (NCD)
  • Detention/retention ponds
    • Multi-use facilities
    • Regional planning
    • Regional Stormwater Management Plans (RSMP)
  • Levee systems
    • Breach simulations
    • USACE 408 Permitting
    • FEMA accreditation
    • Emergency Action Plans (EAP) and evacuation routing
    • Design and rehabilitation
    • Interior drainage/sump analysis
    • Stormwater pump station design
  • Reservoirs, dams and spillways
    • System operations
    • Breach analysis
    • TCEQ permitting
    • Emergency Action Plans (EAP)
    • Rehabilitation
  • Flood Warning Systems (FWS)
    • Remote sensing
    • Real-time modeling and mapping
    • Web map user interfaces
  • Acquisitions and relocations
  • Operation and maintenance plans
  • Grants
    • TWDB Flood Protection Planning Grants (FPP)
    • Hazard Mitigation Grants Program (HMGP)
    • Severe Repetitive Loss Grants (SRL)
    • Flood Mitigation Assistance (FMA)
    • Community Development Block Grant (CDBG)

 

STREAM RESTORATION PLANNING AND DESIGN

  • Stream stability assessments
  • Natural channel design methods
  • Stream bank stabilization designs
  • Fluvial geomorphology studies
  • Sediment transport studies
  • Modeling – RiverMorph, River Flo-2D, FLOWSED/PWERSED, SWAT-Deg
  • USACE Section 404 Permitting

WATER QUALITY PLANNING AND DESIGN

  • Low Impact Development (LID)
  • Green Infrastructure (GI)
  • Permanent Best Management Practices (BMP)
  • Municipal Separate Storm Sewer System (MS4) permitting
  • TxPDES and NPDES permitting
  • TCEQ Water Pollution Abatement Plan (WPAP) permitting
  • USACE permitting
  • Modeling – HSPF, EPA WASP, EPDRiv1, EPA SWMM, FDEP WMM, BASINS, WinSLAMM, QUAL2E, SWAT, HAWQS, QUALTX

 

HYDROLOGIC, HYDRAULIC, AND FLOOD RISK MODELING

  • HEC-HMS, HEC-RAS, HEC-ResSim, HEC-DSSVue, HEC-SSP, HEC-CWMS
    • HEC-GeoHMS, HEC-GeoRAS
  • EPA-SWMM, XPSWMM (1D & 2D)
  • InfoWorks SD, RS, & ICM
  • MIKE 11, MIKE 11 HD, MIKE Flood HD
  • FLO-2D
  • StormCAD, GeoPAK Drainage
  • HEC-FDA, BCA
  • HAZUS

 

TRAINING DEVELOPMENT AND DELIVERY

  • HEC-HMS (basic & advanced)
  • HEC-RAS (basic, advanced, unsteady)
  • HEC-RAS 2D
  • HEC-GeoRAS, HEC-GeoHMS, and terrain development
  • FEMA Risk MAP non-regulatory products
  • FEMA CTP training
  • Certified Floodplain Manager’s training
  • Ethics in floodplain management
  • Customized training development for communities

 

INNOVATIONS AND TECHNOLOGY

  • Web map application development and hosting
  • Halff TrackIT (web-based project and infrastructure trackers)
  • Halff GIS iOS App for iPhones/iPads (Mobile GIS)
  • Risk MAP tools (CSLF Processor and DAGs Generator)
  • Halff real-time survey and GIS integration
  • Rainfall generator and storm centering tool
  • Flood forecasting and automated warning systems
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