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Acoustic Doppler Current Profilers
K3E34-200089/A Courteau, Robert Telephone No. - (343) 550-1614
Background Water Survey of Canada (WSC) a division of Environment and Climate Change Canada (ECCC) is responsible for monitoring over 2000 river discharge and water level sites in Canada. WSC collects information on water parameters such as water velocity, water temperature, river cross sectional dimensions etc. performing quality assurance checks in real time and in post processing.
Water Survey field personnel use Acoustic Doppler Current Profilers (ADCP) to carry out normal water data acquisition duties and specialized surveys of rivers. The locations of the data collection sites vary from remote locations where access is only available by chartered air transport with limited hauling capacity, to road-accessed sites. The ideal solutions would minimize the need to estimate data through extrapolation or interpolation of measured portions. The WSC also uses Acoustic Doppler Current Profilers to measure discharge under ice following established mid-section methods and procedures specific to deployment of acoustic profilers under ice.
The rivers at which measurements are taken vary greatly in environmental conditions, in width, in depth and flow range. They range in size from shallow and narrow creeks that have a very low flow to large, 15+ meter deep rivers as well as rivers that have water velocities up to 5 meters per second. Many of the rivers may have moving beds or conditions such as aquatic vegetation that make hydroacoustic discharge measurements difficult. Not all rivers may present conditions appropriate to hydroacoustic measurements and as such, the systems adopted must provide means to inform the operator when conditions are either marginal or inadequate for such measurement methods. In order to achieve specified accuracies under the wide range of open water and under ice conditions, two categories of ADCP will be required to fulfill WSC requirements 1) a shallow water ADCP and 2) a mid/deep water ADCP.
Both the shallow water and mid/deep water ADCP types will be deployed in tethered boats or remote controlled boats. They may also be used for under ice measurements using the mid-section method. It is likely only the mid/deep water ADCP will be used in a manned boat context.
The Water Survey of Canada requires ADCPs that measure varying flow velocities and depths. The instrument must adapt to these variations during a continuous transect. An instrument that must be stopped and reconfigured to measure normally expected variations in depths encountered during transects is not acceptable.
Delivery Date: Above-mentioned
The Crown retains the right to negotiate with suppliers on any procurement.
Documents may be submitted in either official language of Canada.
Not stated in the notice: procurement type, procurement method, selection criteria, region of delivery, region of opportunity, expected contract period, end user
The source reports 3 amendments. CanPursue observed 1 of them with dates.
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