Dam Safety & Design Services

About Woidt Engineering and Consulting, PC

Specializing in:

  • Dam Break Modeling
  • Dam Break Inundation Mapping
  • Dam Safety Inspections
  • Dam Hydraulic Assessments
  • Dam Inspection & Maintenance Plans
  • Emergency Action Plan Preparation
  • Dam Repair and Design
  • Spillway Capacity Improvements
  • Dam Break Modeling
  • Dam Break Inundation Mapping
  • Dam Safety Inspections
  • Dam Hydraulic Assessments
  • Dam Inspection & Maintenance Plans
  • Emergency Action Plan Preparation
  • Dam Repair and Design
  • Spillway Capacity Improvements


There are some 78,000 dams nationwide and roughly 8,000 in Pennsylvania and New York. Many of these are small, privately owned dams. The Association of State Dam Safety Officials estimates that approximately 40% of non-federally owned dams are in need of rehabilitation. Even dams with relatively small storage volumes and low dam heights could cause extensive downstream damage and loss of life in case of an abrupt dam failure.

Dam failures can occur from a wide variety of reasons including inadequate spillway capacity (overtopping), poor design, seepage and piping, structural failure, geotechnical conditions, seismic activity and even sabotage. WEC has the experience and training to identify potential trouble spots and recommend remedial solutions to repair deficiencies before a problem occurs. We provide dam inspection services, hydrologic and hydraulic modeling, dam break and inundation mapping, preparation of emergency action plans (EAP) and design of dam improvements. Our dam projects have ranged in size from large “farm ponds” to high hazard dams that impound over 10,000 acre-feet of water.

WEC Dam Safety Projects By Type

Representative Projects


Broome County Dams, Town of Union, NY

Broome County Dams, Town of Union, NY

This project involved assessing spillway capacity improvements for three county owned, high hazard earth embankment dams. The project study investigated low cost retrofit measures to control emergency spillway release rates from the dams such that downstream peak flows and flooding from major storm events could be reduced. Work included development of probable maximum flood hydrographs, spillway capacity analysis, and unsteady flow dam break modeling.


Village of Oxford & Town of New Berlin Dams, Chenango County, NY

Village of Oxford & Town of New Berlin Dams, Chenango County, NY

This project involved preparation of inundation maps and emergency action plans, inspection & maintenance plans, complete NYSDEC visual inspections, hydrologic and hydraulic assessments, stability assessments, dam break analysis and completion of detailed engineering assessment reports (for 2 of the 3 dams) for three county owned, high hazard earth embankment dams located in Chenango County. The dams are flood control structures, originally designed by the Soil Conservation Service, now the Natural Resource Conservation Service.


Alexander Lake Dam, Newark Valley, NY

Alexander Lake Dam Newark Valley, NY

This project consisted of providing dam inspection services, engineering investigations and design of remedial spillway improvements for a small, high hazard earth embankment dam. Work included preparation of an inspection report, hydrologic and hydraulic assessment, spillway capacity analysis, dam break analysis, inundation mapping, dam hazard class verification, design of a new primary spillway and outlet works, preparation of design plans, permits and coordination with NYSDEC Dam Safety.


Beaver Pond Dam, Town of Lisle, NY

Beaver Pond Dam Town of Lisle, NY

This project consisted of providing dam inspection services, engineering investigations and design of spillway and embankment improvements for a small, intermediate hazard earth embankment dam. Work included hydrologic and hydraulic assessment, spillway capacity analysis, dam hazard class verification, inundation mapping, EAP preparation, design of a new primary and emergency spillway and outlet works, design of a raised earth embankment dam, preparation of design plans, permits, and coordination with NYSDEC Dam Safety.