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10555 Westoffice Drive
Houston, Texas 77042

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Hydrology & Hydraulics

EHRA is experienced in the hydrologic and hydraulic analysis for small or large-scale land developments, floodplain analysis and mapping, public works drainage and flood reduction projects. Our staff uses HEC-HMS, HEC-RAS, HEC-GeoRAS, ICPR, SWMM, GIS and other software to perform drainage impact studies, regional stormwater detention plans, and prepare FEMA Letters of Map Change (CLOMR, LOMR, LOMR-F). EHRA has been at the forefront of analyzing and integrating Low Impact Development techniques to improve stormwater quality and reduce runoff in the Houston area. EHRA also excels at integrating hike and bike trails, landscaping, and athletic and recreational facilities with drainage and detention facilities to add value to the overall project.

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10555 Westoffice Drive
Houston, TX 77042
An engineering legacy of providing personal, innovative, and professional solutions since 1936.