High lineament density bedrock aquifer

Aquifer

Version	Metadata
	81418c9a-c16e-47cd-8fc9-f738c32d76d5

Project
Okanagan Valley

Update:2014-03-10

Physiography
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.
Hydrogeological region	Cordillera
Hydrogeological context
Relief	Elevation varies between 300-900 m. It decreases from east to west, from inland to Okanagan Lake. Steep slopes are found along Okanagan Lake.
Area	462.00 km2
Lithology
Description	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.
Source
Aquifer
Aquifers	List of aquifer High Lineament Density Aquifer

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