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Integrated Environmental & Stormwater Solutions

Riparia delivers specialized stormwater, environmental, and construction services across the Pacific Northwest—protecting water quality, restoring natural systems, and keeping infrastructure compliant and functional. We work alongside developers, property owners, municipalities, HOAs, industrial facilities, and conservation organizations. As a subsidiary of MacKay, we combine certified field professionals, experienced environmental scientists, and licensed engineers under one roof—giving clients a single, accountable team for the full scope of their environmental and stormwater needs.

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Solving Problems Is in Our Nature

Riparia’s services span the full range of stormwater, environmental, and construction challenges facing property owners, developers, and land managers in the Pacific Northwest.

  • Stylized shield-shaped landscape with a winding blue river, evergreen forest, mountains, rainy sky, and an orange setting sun.

    Stormwater Management

    Riparia maintains green and gray infrastructure, performs inspections and compliance monitoring, navigates enforcement actions, and delivers construction and design solutions through our partnership with MacKay.

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  • Stylized shield-shaped badge showing a heron silhouette flying over a blue lake with reeds in the foreground, green hills and an orange sun in the background.

    Natural Resource Management

    From wetland delineation and permitting to restoration, mitigation, and long-term monitoring, Riparia manages natural resources across the full project lifecycle—blending science, restoration, and construction expertise.

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  • Shield-shaped emblem showing a winding path through green fields with yellow wildflowers and blue mountains in background

    Invasive Species & Vegetation Management

    Riparia provides licensed invasive species control including Japanese knotweed removal, blackberry clearing, and noxious weed management. Our WSDA-licensed staff and purpose-built equipment handle infestations of any size.

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  • Yellow bulldozer with driver on a riverside construction site with mountains and water in the background

    Field & Construction Services

    Hydro-excavation, dewatering, pipeline jetting, erosion control, pond dredging, tank cleaning, and bulk material transport—all performed by one experienced crew with a modern fleet ready for whatever your site demands.

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  • Stylized badge showing a sunrise over rolling green hills and a lake, framed by evergreen trees and a dark border with a yellow banner area at the bottom

    Environmental Planning & Permitting

    Riparia guides clients from wetland delineation and critical areas compliance through federal and state permit applications and SWPPP development, identifying environmental impacts early in collaboration with MacKay’s engineering team.

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Why Choose Riparia Environmental

  • Science & Construction Under One Roof: Most environmental firms advise, most construction crews build—Riparia does both, guiding projects from assessment through implementation without losing continuity or accountability.
  • Engineering Depth When It Matters: As a MacKay subsidiary, Riparia has direct access to licensed engineers and technical specialists who design and maintain many of the systems we work on.
  • Regulatory Knowledge That Works in Your Favor: Our management team has spent decades alongside the regulators, inspectors, and agencies governing environmental and stormwater compliance in the Pacific Northwest.
  • Honest, Long-Term Relationships: Riparia is built around repeat clients and partnerships built on trust—we tell clients what they need to hear and measure success by impact and outcome.
Marshy pond edge with tall green and brown reeds, cattails, and floating duckweed on the water surface

Ready To Get Started?

Whatever your environmental or stormwater challenge, Riparia has the expertise, equipment, and relationships to help you move forward. Contact us today and let’s figure out the right solution for your project.

Contact the Riparia Team

Or call us directly: (360) 693-4555