High lineament density bedrock aquifer

Aquifer

Project
Okanagan Valley

Datasets

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High lineament density bedrock aquifer unit description

Update:2014-03-10
The high lineament density bedrock unit is the only unit that is located on the eastern side of the Okanagan Valley Fault. It consists of mudstone, siltstone and breccia associated with White Lake Formation in the east and Cenozoic andesite in the western part of the unit. The bedrock is mainly covered by alluvial and glaciolacustrine sediments. Along Okanagan Lake some bedrock outcrops may be observed. The bedrock aquifer is mostly under confined conditions. The bedrock has moderate hydraulic conductivity. This unit has the lowest recharge rates for the Okanagan area. Groundwater flows to Okanagan Lake.
Physiography
Hydrogeological regionCordillera
Hydrogeological context
ReliefElevation varies between 300-900 m. It decreases from east to west, from inland to Okanagan Lake. Steep slopes are found along Okanagan Lake.
Area462.00 km2
Lithology
DescriptionThe high lineament density bedrock unit is the only unit that is located on the eastern side of the Okanagan Valley Fault. It consists of mudstone, siltstone and breccia associated with White Lake Formation in the east and Cenozoic andesite in the western part of the unit. The bedrock is mainly covered by alluvial and glaciolacustrine sediments. Along Okanagan Lake some bedrock outcrops may be observed.
Source
Aquifer
AquifersList of aquifer High Lineament Density Aquifer

Unit properties

Surficial aquifer media
Typical value:porous
Description Bedrock is mainly covered by alluvial and glaciolacustrine sediments.
Source Surficial geology, Kelowna, British Columbia
Bedrock aquifer media
Typical value:fractured
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Confinement
Typical value:confined
Source Surficial geology, Kelowna, British Columbia
Surficial sediment thickness
Range: [50 to 700] m
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Bedrock hydraulic conductivity
0.0000016 m/s
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Regional precipitation
381 mm/y
Description Average annual precipitation for Kelowna is 381 mm
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Regional recharge
Range: [4 to 8] mm/y
Description Recharge rates are low since the aquifer is covered by thick sediments.
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Regional discharge
Description Okanagan Lake
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC