Dam Safety Engineering

TRC provides our clients with a range of dam safety engineering services. For existing structures services include on-site inspections and assessments, hydrologic routings for required design floods, spillway adequacy analysis, breach analysis, inundation mapping, emergency action plans, stability analysis and seepage control, determination of downstream hazard classification and development of Emergency Action Plans and operation and maintenance manuals.

For dams where safety issues have been identified, TRC offers design services for rehabilitation or decommissioning of the structure and construction phase services. Typical issues include hydraulic inadequa-cy, changes in hazard classification due to downstream development, seepage, slides, sloughs, sinkholes, wave action erosion of upstream slopes, scouring of spillway facili-ties, and cracks or unusual movement of structural members.

Our specialties include:

Evaluation• Inspection & Assessment• Updating Hydrologic Analysis• Spillway Adequacy Analysis• Breach Analysis/Inundation Mapping• Stability Analysis/Seepage Control• Hazard Classification Determination

Design – Plans and Specifications• - Rehabilitation• - Decommissioning• - New Construction• - Construction Phase Services• Operations• Gate Operations• Operation and Maintenance Manuals• Emergency Action Plans

Additional Services• Permitting (Federal, State, & Local)• Data Collection and Mapping (CAD/GIS/

GPS)• Public Involvement & Education

Because of the harsh environment, dams require regular attention to assure the structure and its appurtenances are functioning properly.

TRC’s experts are prepared to address a host of challenges related to dams and dam safety. The following is a partial list of tools utilized to evaluate a structure and its potential impact on the public:• HEC-1• HEC-HMS• SITES• HMR52• HEC-2• HEC-RAS• TR-20 & TR-55• NWS DAMBRK• NWS DWOPER

ENVIRONMENTAL

Why TRC?

• TRC’s understanding of the unique challenges associated with dam projects, and our full service engineering and environmental capabilities to address all phases of a successful transportation project.

• Assurance that each task, regardless of size or complexity, is completed with full appreciation of market, regulatory, engineering, construction, and operating requirements

TRC performed a dam safety inspection on the Manadas Creek Lake Dam in Laredo, Texas and completed rehabilitation designs.

TRC has performed inspections of numerous dams like this recreational dam in Fort Worth, Texas.

TRC designed this weir for the Rio Grande River near Brownsville, Texas.

TRC performed an H&Hanalysis of Lake Sheridan Dam and determinedexpensive modifications were not needed.

For more information, please contact:Mark Robbins, Practice Leader512.343.1070 or mrobbins@trcsolutions.com www.trcsolutions.com

About TRC

A pioneer in groundbreaking scientific and engineering developments since the 1960s, TRC is a national engineering, consulting and construction management firm providing integrated services to the power, oil and gas, environmental and infrastructure markets. We serve a broad range of clients in government and industry, implementing complex projects from initial concept to operations. TRC delivers results that enable clients to achieve success in a complex and changing world.

TRC includes over 4,000 technical professionals and support personnel in more than 120 offices throughout the U.S. Our clients depend on TRC’s multidisciplinary teams to design solutions to their toughest business challenges.

TRC’s Water Resource experts provide a variety of services for energy, transportation, infrastructure, and state and local development projects. Our diverse knowledge and experience allows us to successfully and efficiently achieve our client’s goals. In addition, TRC’s staff of accomplished scientists and technicians enables us to provide a unique blend of water resource services to a broad range of clients across the nation.

Representative Clients

• Boot Ranch

• Brownsville Public Utility Board

• Falls County Water Control and Improvement District

• Lavaca Navidad River Authority

• Texas Commission on Environmental Quality

• Texas Water Development Board

• The Cascades Golf and Lakeshore Community

• The City of Seguin, TX

• Upper Trinity Regional Water District

6-12-2017