We measure sludge & sediment in lagoons & ponds to reduce dredging costs by up to 50% 

Hydrasurvey provides independent sludge and sediment surveys.

We are not a dredging contractor! We provide unbiased bathymetric sludge and sediment surveys required to accurately plan and budget for desludging or bioaugmentation projects.

Hydrasurvey’s bathymetric surveys:

  • are precise and unbiased of dredging contractors or bioaugmentation providers

  • profile and measure how much sludge or sediment is in your lagoon or pond

  • quantify how much sludge / sediment needs to be dredged

  • determine sludge or sediment composition and provide disposal options for dredging

  • expose potential infrastructure risks with 3D sludge maps

  • confirm that the contractor completed desludging as agreed in the project plan

  • can be completed across North America even in remote locations not accessible by road

Bathymetric Sludge Map from a Wastewater Lagoon

Ready to know what’s in your lagoon?

Services

Trusted services that precisely evaluate what is in your lagoon or pond

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 provide actionable data to ensure your project is completed on time and within budget.

Industry Leading Technology, Experienced Team and Safety First Approach

Hydrasurvey performing dredging sludge survey analysis

By adopting advanced technology and investing in our growing team, we have established ourselves as the leading bathymetric survey provider across North America.

Hydrasurvey works alongside engineers, wastewater managers and dredge consultants to provide insight into their sludge and sediment management needs.

Holding a COR certification and completing ongoing training, safety is a guiding principle and is integrated into all operations.

Where we work

Hydrasurvey proudly serves all of Canada and the United States, with offices in Calgary, Alberta and Toronto, Ontario.

Our bathymetric surveying equipment is portable allowing us to serve customers coast to coast, even those in remote locations not accessible by road.

Our valued clients

EPCOR a Hydrasurvey Client
WSP a Hydrasurvey Client
MPE a Hydrasurvey Client
Stantec a Hydrasurvey Client
ISL a Hydrasurvey client
City of Calgary a Hydrasurvey Client
RMWB a Hydrasurvey client
City of Fort Saskatchewan a Hydrasurvey Client

  • Ryan F. | Wastewater Engineer and Project Manager | MPE Engineering Ltd.

    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 client's 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.

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

    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.

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

    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.

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

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

    Hydrasurvey's Comprehensive Sludge Survey provided our town with clear 3D sludge maps showing where and how much sludge had accumulated throughout the lagoon. Their report also determined that spot dredging was a good solution which will save us time and money on dredging. Hydrasurvey is solution focused, we recommend them to other municipalities.

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

    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.

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

    Provided great service with an excellent final report.

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

    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.

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

    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.