(412) 856-9440

Dams and Waterways

D’Appolonia’s dam and waterway experience includes:

Services Provided:

Site Selection and Feasibility Evaluation
New Dam Design and Permitting
Dam and Spillway Rehabilitation
Potential Failure Modes and Risk Analyses
Dam Inspections
Dam Breach Analyses and Flood Routing Studies
Design of Anchor Systems
Design of Shoreline and Channel Protection Systems
Emergency Action Plans
Seepage and Geotechnical Analyses
Hydrologic and Hydraulic Evaluations
FERC Part 12
Construction Monitoring and Certification

We have worked for private industry and federal, state and local governments on dam projects ranging from performing safety inspections to embankment and hydraulic structure design and related construction monitoring. We have designed earth embankment dams and related hydraulic structures, and we have prepared designs for rehabilitation of existing dams.

Typical dam rehabilitation projects have included repair of downstream slope failures, redesign of spillways to increase capacity, raising of dam crests to increase storage and discharge capacity, repair of damage to spillways from undercutting and spalling, repair of structural elements associated with spillway gates, armoring of dam faces to allow for additional storage capacity under extreme flows, and design of shore and channel protection systems.

Inspections are an important component of most D’Appolonia projects related to dams. In addition to performing inspections for state and local agencies, D’Appolonia performs inspections of privately-owned dams licensed by the Federal Energy Regulatory Commission (FERC).

Monitoring of structure performance through design, installation and observation of instrumentation systems is an important part of D’Appolonia projects related to geotechnical engineering.