Moderate lineament density bedrock aquifer

Aquifer

Version Metadata
81418c9a-c16e-47cd-8fc9-f738c32d76d5
Project
Okanagan Valley

Datasets

Download

Moderate lineament density bedrock aquifer unit description

Update:2014-03-10
The hydrogeological unit is mainly composed of Okanagan gneiss. Some isolated sections present plateau basalts and interfoliated schist and paragneiss. The bedrock outcrops only in some locations, it is mainly covered by a till unit. Along the river, there are scree deposits and the Mission Creek Valley Fill aquifer is present. The bedrock has moderate hydraulic conductivity. This unit has low recharge rates for the Okanagan area. The recharge rates decrease from east to west. Shallow bedrock groundwater of the south-eastern part of the unit flows toward Mission Creek Valley Fill aquifer. Other shallow and deep bedrock groundwater flows toward Okanagan Lake. The deep bedrock groundwater flow is less important than the shallow one because the permeability of the bedrock decreases exponentially with increased depth in the Okanagan Highlands.
Physiography
Hydrogeological regionCordillera
Hydrogeological context
ReliefThe elevations range between 1500 and 600 m. The elevation decreases from east to west towards Okanagan Lake. The highest elevations are found inland and the lowest along the river.
Area446.00 km2
Lithology
DescriptionThe hydrogeological unit is mainly composed of Okanagan gneiss. Some isolated sections present plateau basalts and interfoliated schist and paragneiss. The bedrock outcrops only in some locations, but it is mainly covered by a till unit. Along the river, there are scree deposits and the Mission Creek Valley Fill aquifer is present.
Source
Aquifer
AquifersList of aquifer Moderate Lineament Density bedrock aquifer

Unit properties

Surficial aquifer media
Typical value:porous
Description In the center of the unit, alluvial sediments and Mission Creek Valley Fill aquifer recovered bedrock aquifer.
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
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
Description The bedrock aquifer is confined by the till unit or clay (average thickness 15 m).
Source Surficial geology, Kelowna, British Columbia
Surficial sediment thickness
Range: [0 to 100] m
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Well depth
80 m Range: [18 to 171] m
Description Data representing only a part of the aquifer (BC aquifer 473).
Source Aquifer Information Table - Aquifer 473 (Moderate lineament density aquifer)
Groundwater depth
26 m Range: [1 to 157] m
Description Data representing only a part of the aquifer. (BC aquifer 473).
Source Aquifer Information Table - Aquifer 473 (Moderate lineament density aquifer)
Bedrock hydraulic conductivity
2.8E-7 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: [8 to 15] mm/y
Description Recharge rates decrease from east to west.
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Regional discharge
Description Shallow bedrock groundwater of the south-eastern part of the unit flows toward Mission Creek Valley Fill aquifer. Other shallow and deep bedrock groundwater flows toward Okanagan Lake. The deep bedrock groundwater flow is less important than the shallow one because the permeability of the bedrock decreases exponentially with increased depth in the Okanagan Highlands.
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Hydrogeological unit yield
Description 0.6 l/s (range: 0.01 l/s to 6 l/s) Data representing only a part of the aquifer (BC aquifer 473).
Source Aquifer Information Table - Aquifer 473 (Moderate lineament density aquifer)
Hydrogeological unit potential
Typical value:low
Source Aquifer Classification Database
Groundwater usage
Typical value:domestic
Description Domestic and municipal (low demand)
Source Aquifer Classification Database
Aquifer vulnerability
Typical value:low
Source Aquifer Classification Database
Groundwater Quality
Typical value:fresh
Description No concern about water quality
Source Aquifer Classification Database