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Reservoir Hydrographic Surveys - Ref: QQ2019/05

Expressions of Interest (Quick Quote)


The Manx Utilities Authority is a statutory authority providing electricity, wholesale natural gas, clean water and processes waste water on the Isle of Man. This means that Manx Utilities is a wholly owned statutory authority of the Isle of Man Government, which has an AA+ credit rating.

Manx Utilities wishes to procure the services of suitably competent hydrographic and bathymetric surveying specialist. The understanding of depth and morphology of the reservoirs is based on surveys that are suspected to be obsolete.   It is prudent we gain an up to date and better understanding of size, shape, and volume of our assets. We also need to determine the extent of sediment accumulation within the reservoirs.  Thus, we require volumetric calculations and sediment profiling for seven of our reservoir assets as below:


Four reservoirs are currently operational providing raw water to the island’s 2 water treatment works. Cringle and Ballure Reservoirs have been decommissioned and Block Eary Reservoir supplies water for hydroelectric power generation. 

Should you wish to participate in this request for quotation exercise please register your organisation on the Isle of Man Government’s Procurement Portal at the following website

Please select ‘Register’ from the menu on the left side of the Home Page. 

Once you have registered your organisation you should select this ‘Quick Quote’ from the list of ‘Current Tenders’ and ‘View Details’ then click ‘Express an Interest’ at the bottom of the page.

Once you have expressed an interest a new tab called ‘Quote Documents’ will become available where you can download all the necessary information.

The closing date for questions and clarifications to be submitted through the Portal is 12 noon on Thursday 14th March 2019.

Should you have any difficulty in using the website or registering your interest in this way, please e-mail.

The closing date for the return of your quotation through the Portal is 12 noon on Thursday 21st March 2019.

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