As consultants to federal, state, and local government, our environmental engineers and scientists marry the principles of engineering, biology, hydrogeology, and earth sciences to develop environmentally sensitive project designs.

We have long considered it important to not only understand, but also respect the local, state, and federal environmental regulations that govern this work. 

How can we help?

We understand that a design is only good if it can be permitted and built. Therefore, embedded within our multi-disciplinary team is extensive expertise in environmental permitting, supporting our project teams throughout SLR to develop designs that improve the management of water resources and preserve our natural environment. 

Supported by our thorough knowledge of surface water management, our work seeks to integrate water and nature through our understanding of art and science, within the communities where we live, work, and play. 


The water resources team provides the following technical services:

  • Fluvial geomorphology
  • Hydrology & hydraulic analysis & design
  • FEMA LOMR & CLOMR applications
  • Flood assessment & mitigation design
  • River & stream restoration design
  • Streambank stabilisation assessment & design
  • Dam stability analysis, repair & removal design
  • Fish passage design
  • Aquatic organism passage assessment & design
  • Coastal resiliency design
  • Scour analysis
  • Sediment characterisation & transport analysis
  • Watershed management & planning
  • Stormwater management
  • Lake & pond restoration

Our team includes

  • Andrew Greene Manager of Water Resource Engineering
    Andrew Greene

    From an early age, Andie was drawn to engineering and construction due to the influence of his father and uncle, which translated to summer employment building houses while still in high school. He has a broad range of engineering experience that spans from urban infrastructure design to general civil site development. As Manager of Natural Resources Engineering, Andie leads the design efforts for river restoration, dam removal, and fish passage projects. He also brings a wealth of experience in hydrology, hydraulics, and dam engineering. 

  • Roy Schiff Principal Water Resource Engineer
    Roy Schiff

    Roy is a Water Resource Scientist and Engineer whose practice focuses on hydrology, hydraulics, sediment transport, floodplains, channel restoration, and transportation resilience. He has been involved in several research projects across Vermont and the region, evaluating the economic impacts of living in floodplains, drafting best engineering practices to reduce future flood risks, improving protocols for habitat assessment, and creating guidelines for channel restoration. Roy was drawn to this industry because of an early and continued love of fishing and being by the river, and in his role he most values the opportunity to help communities in tough situations solve problems. 

  • Jessica Louisos Senior Water Resources Engineer
    Jessica Louisos

    Jessica is a Senior Water Resources Engineer specialising in geomorphological and bio-engineering designs for riverine systems and watersheds. She has designed numerous river restoration, dam removal, storm water mitigation and green infrastructure, flood mitigation and recovery, bank and gully stabilisation, culvert, bridge scour, and aquatic organism passage projects. She has managed projects and performed tasks at all project stages including project scoping, field data collection, modelling, design, permitting, cost estimating, and construction oversight for many projects. Jessica has broad field experience in geomorphic and habitat assessment, stormwater master planning, and construction observation. She has advanced river and watershed modelling experience including multiple hydrology models and one- and two-dimensional hydraulic modelling to inform flood mitigation, bridge scour and design, and restoration projects. Jessica was awarded the 2013 Vermont State Young Engineer of the Year Award.

  • Mark Carabetta Principal Environmental Scientist
    Mark Carabetta

    Mark has been working in the field of environmental science, conservation and ecological restoration for over 25 years, specialising in the science of wetlands and rivers. His expertise is in wetland and river evaluation, geomorphic assessment, ecological restoration, regulatory permitting, natural community classification, and hydrology. He is a Professional Wetland Scientist and Certified Floodplain Manager. Mark lives with his family in New York’s Hudson River Valley.