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Provincial Groundwater Monitoring Network

In partnership with the Ministry of Environment (MOE), CLOCA operates and maintains a network of 16 groundwater monitoring wells located throughout the watershed.

Map of Provincial Groundwater Monitoring Network Wells (PDF - 499 K)

At each site, a Levelogger automatically records water levels and temperature in monitoring wells. Each levelogger consists of a sensor, battery, and a datalogger, all housed within a sealed stainless steel housing. The logger uses infra-red data transfer through direct read cables. The levelogger measure absolute pressure (water pressure + atmospheric pressure) expressed in centimeters of water column.

Provincial Groundwater Monitoring Network
Pump equipment Photo: CLOCA

The monitoring wells are equipped in two ways, telemetry sites and manual download sites. The telemetry sites are equipped with a cell phone, modem, and battery. The MOE computer downloads the water level data from the Levelogger every second week. CLOCA also has the ability to dial these sites to collect data or check equipment operation. The manual download sites are equipped with only the direct read cable, which is connected to a portable computer. The data is downloaded and sent electronically to the MOE database.

Provincial Groundwater Monitoring Network
Heber Photo: CLOCA

Provincial Groundwater Monitoring Network
Hampton Photo: CLOCA


  • A water monitoring network should relate to both meteorological and hydrologic data while addressing spatial concerns related to ensuring adequate coverage.

  • A network of stream gauges should be designed to provide coverage across all sub-watersheds where flow data is required. The information/data generated should reflect the needs of the users (eg. flood forecasting/model, design, modelling, land use planning, erosion control, water taking/water budgets, etc.)

  • A network of precipitation stations should be designed to provide coverage across all sub-watersheds where flow data is required.

  • A network of groundwater wells should be designed for long term monitoring where the groundwater resource is considered to be vulnerable, a source aquifer supplying a community or selected as a baseline monitor.

  • A network of snow courses should provide coverage across all sub-watersheds where flow data is required.

  • A network of surface water quality sampling sites should be established to fulfill data requirements for CLOCA programs including watershed planning, watershed health monitoring, and coastal wetland monitoring.


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