Hydrologic and Hydraulic Analysis
Whittemore and Haigh Engineering, Inc. has extensive experience in surface water hydrology and engineering to support a wide range of water resource projects including river reach analyses, regional watershed master planning, design of stormwater flow control and treatment facilities, stormwater planning and design for low impact development projects, wetland studies, flood frequency analyses, and flood risk assessments. We use continuous simulation hydrologic modeling techniques for small- and large-scale catchments.
Whittemore and Haigh Engineering, Inc. was contracted by a local municipality to conduct a hydrologic and hydraulic analysis of a large watershed contributing to stream flow constricted by three culverts placed in series. The project was initiated due to on-going maintenance and deterioration of the three culverts and due to significant flooding along the stream reach. Whittemore and Haigh Engineering, Inc. conducted a hydrologic analysis of the contributing watershed using continuous simulation hydrologic modeling. The hydrologic analysis determined the stream flow for the 2-year through 100-year storm events. A hydraulic analysis of the stream channel and culverts was conducted using the HEC-RAS River Analysis Software. The hydraulic analysis determined in-stream flow capacity and locations of out-of-bank flows and depths. Using both the hydrologic and hydraulic models Whittemore and Haigh Engineering, Inc. was then able to present viable options for the replacement of the three deteriorating existing culverts.