Hydrasurvey provides independent sludge and sediment surveys to help reduce dredging costs by up to 50%.

We Measure Sludge.

We don’t move it, treat it, or dispose of it.

We deliver the data you need to make informed maintenance and budgeting decisions.

Focused on Quality

Hydrasurvey is committed to accuracy, reliability, and innovation, delivering precise, independent sludge and sediment assessments with industry leading technology.

Sludge Survey at a remote fly-in First Nation

We are an experienced team with a safety first approach. We support dredging, bioaugmentation and wastewater management across North America.

Determining treatment capacity loss in a wastewater lagoon with a whaled lagoon liner.

Our Valued Partners

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Our Services

Hydrographic Sludge and 
Sediment Surveys

Our sludge and sediment surveys provide sludge volume, composition and 3D maps.

Dredge Monitoring & Bioaugmentation Assessments

Independent performance monitoring services providing actionable data to ensure your project is completed on time and within budget.

Sludge Survey Liner Mapping

Across North America, Close to You

Hydrasurvey proudly serves clients across Canada and the United States, with offices in Alberta, Ontario, and Texas. Our portable bathymetric surveying equipment enables us to reach coast-to-coast—including remote locations that are often inaccessible by road, ensuring that no matter where your project is, we can provide the precise data you need.

Hydrasurvey Surveys North America

Choose Hydrasurvey

We deliver precise and reliable bathymetric surveys using cutting-edge technology and a highly skilled team. With Hydrasurvery you can count on accurate sludge and sediment measurements every time.

Precision and Unbiased Data

We provide independent sludge and sediment surveys that accurately measure volume, composition, and disposal options ensuring your project is planned and executed with confidence.

Industry Leading Expertise & Technology

With over 700 surveys completed, Hydrasurvey is the industry leader in quantifying sludge and sediment in engineered bodies of water, using innovative, mobile technologies that can reach anywhere.

Safety & Compliance First

As a COR-certified company with rigorous safety standards and ongoing training, we prioritize the well-being of our team ensuring compliance with industry regulations.

Hear what our customers have to say.

  • "MPE Engineering Ltd highly values Hydrasurvey’s third party sludge and sediment surveys. Their report provided us with accurate data that we relied on when budgeting, planning, and monitoring, the progress of our clients' wastewater bioaugmentation project. By establishing an accurate baseline sludge volume and profile, we will be able to track the sludge reduction performance of a bioaugmentation product using a third-party."

    Ryan F. | Wastewater Engineering and Product Manager | MPE Engineering Ltd.

  • “We've relied on Hydrasurvey for sludge depth, quality testing, lagoon maintenance and aeration line repairs for our wastewater lagoon system. They have gone above and beyond with customer communication, efficiency, in depth report quality and general expertise in wastewater treatment and control. It has allowed us to budget and plan more effectively for projects within our lagoon systems.”

    Shelley G. | Utilities Manager | Town of Drayton Valley, Alberta

  • “We challenged Hydrasurvey to survey our naturally lined lagoons in order to identify the most appropriate desludging option. At first we were skeptical that they would not be able to identify the natural terrain liner and accurately show the sludge distribution throughout the lagoon. Their technical expertise and methodology surpassed our expectations: they not only mapped the liner of each cell, they also were able to clearly show sludge accumulation throughout the lagoon. We are impressed with their report and feel confident we now know our best desludging option. We recommend Hydrasurvey and look forward to using them in future projects.”

    Derek F | Superintendent of Utilities | Town of Perth, Ontario

  • “We heard about Hydrasurvey at a wastewater webinar where we learned they could help us determine if our sewage lagoon bioaugmentation product was working. They surveyed two cells at our lagoon in Spencerville, Ontario. We are very happy with their final sludge survey report, their professionalism and customer service. We will use them again to determine how much sludge accumulates year-over-year to assess the effectiveness of the product we're dosing.”

    Eric W | Chief Water Sewer Operator | Town of Edwardsburg Cardinal, Ontario

  • “Hydrasurvey's sludge survey provided us with clear 3D sludge maps, showing where and how much sludge had accumulated throughout the lagoons. The report also determined that spot dredging would be a cost-effective solution, saving us time and money on dredging. Hydrasurvey is solution-focused, and we recommend them to other municipalities.”

    Todd T | Superintendent of Public Works | Town of Carlyle, Saskatchewan

  • “The Town of Athabasca is very impressed with Hydrasurvey's work ethic, positive attitude, professionalism, quality of work and dedication. We look forward to working again with Hydrasurvey in the future.”

    Terry K. | Utility Supervisor | Town of Athabasca, Alberta

  • “Provided great service with an excellent final report.”

    Rene H. | Municipal Engineer | City of Yellowknife, Northwest Territories

  • “We knew our lagoons had high amounts of sludge build-up so we knew dredging was likely required; however, we hadn't planned to dredge right away. Once we completed the sludge survey and were informed dredging was necessary but it did not have to be done this year, we were very relieved! This now allows us time to plan and budget for dredging in the future.”

    Doug V. ❘ Water Treatment Manager | Town of Gull Lake, Saskatchewan

  • “In 2023, we had Hydrasurvey complete a Comprehensive Sludge Survey to determine the effectiveness of a bioaugmentation product we started using. The detailed report provided us with the insights we needed to make informed decisions. We were very impressed with the professionalism and accuracy of the first survey, so we've contracted Hydrasurvey for a follow-up survey and to conduct surveys on our other lagoons. Hydrasurvey's mapping and quantifying of sludge has become an essential part of our wastewater lagoon monitoring strategy.”

    Don R. | Water Wastewater Utilities Project Manager | Town of Gananoque, Ontario