Hydrologic and Hydraulic Engineering

Hydrologic and Hydraulic Engineering

RIZZO’s Engineers offer an extensive knowledge of hydrologic and hydraulic engineering analysis and design. Our team specializes in complex projects, particularly projects requiring strict Quality Assurance/Quality Control or adherence to complex regulatory requirements, including nuclear quality assurance requirements, as well as state, county, and local government requirements.

RIZZO offers a wide variety of services related to hydrology, hydraulics, and coastal engineering, including risk analysis. Our engineers work with clients to develop effective work plans, schedules, and budgets within the regulatory framework of water-related development projects. We formulate the most effective and cost appropriate engineering solutions, drawing from extensive modeling capabilities and 30+ years of engineering experience.

In order to provide the most appropriate modeling solutions, RIZZO's engineers remain current on the state-of-practice numerical models for hydrologic, hydraulic, and coastal modeling. These computer models include 1D, 2D, and 3D models (e.g., HEC-RAS, FLO-2D, and Delft3D) to provide appropriate detail for engineering problems of varying complexity. When appropriate, RIZZO’s engineers code project-specific computer scripts to streamline problem solving and increase efficiency.RIZZO's capabilities regarding coastal engineering include:

  • Storm Surge Analysis
  • Tsunami Analysis
  • Wave Climate Characterization
  • Wave Run-Up Analysis
  • Recirculation Studies
  • Coastal Geomorphology
  • Paleoflood Studies
  • Analysis of Seiches and Resonance

RIZZO’s engineers are well established in the engineering community, including participation in committees such as the American Nuclear Society committee for updating the ANS-2.8 standard for Probabilistic Flooding Hazard Assessments (PFHAs) and the United States Society on Dams (USSD) committee on hydraulics of dams. RIZZO has also drafted guidance for PFHA internationally, as well as contributing publications and conference presentations within the technical community. RIZZO's capabilities regarding Probabilistic Flooding Hazard Analysis (PFHA) include:

  • Probabilistic Regional Precipitation Hazard Assessments
  • Probabilistic River Flooding Analysis
  • Probabilistic Storm Surge Hazard Analysis (PSSHA)
  • Probabilistic Tsunami Hazard Analysis (PTHA)
  • Joint Probability Analysis: Monte Carlo Simulation (MCS) Techniques
  • Evaluation of Epistemic and Aleatory

Additional Hydrologic and Hydraulic Engineering services include:

  • Dam Break Analysis
  • Modeling of Local Rainfall Runoff
  • Paleoflood Hydrology
  • Probable Maximum Flood (PMF)
  • Probable Maximum Precipitation (PMP)
  • River Flood Modeling (1D, 2D & 3D)