Sand and gravel aquifer (No.463)

Aquifer

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

Datasets

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Sand and gravel aquifer (No.463) unit description

Update:2014-03-11
The sand and gravel aquifer 463 consists of proglacial subaerial-subaqueous fan sediments. The deposits are covered by glaciolacustrine clay of 1-99 m (average 22 m) which confined the aquifer. The latter has a low vulnerability to surface contamination. The aquifer has a good hydraulic conductivity and a moderate productivity. It is exploited for domestic uses. There is a high demand for groundwater exploitation. Groundwater quality is good.
Physiography
Hydrogeological regionCordillera
Hydrogeological context
ReliefThe topography of the hydrogeological unit is flat and has none significant slope. Located in vicinity of Okanagan Lake, the unit has low elevations, ranging from 400 to 500 m.
Area57.00 km2
Lithology
DescriptionThe sand and gravel aquifer 463 consists of proglacial subaerial-subaqueous fan sediments. The thickness of these sediments is estimated at 25 m. The deposits are covered by glaciolacustrine clay of 1-99 m (average 22 m). The unit overlies Okanagan Valley Fill sediments and the high lineament density bedrock. The bedrock doesn't directly underlie the sand and gravel aquifer.
Source
Aquifer
AquifersList of aquifer Sand and gravel aquifer (No. 463)

Unit properties

Surficial aquifer media
Typical value:porous
Description sand and gravel
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Bedrock aquifer media
Typical value:fractured
Description Underlying the sand and gravel aquifer (No. 463) is the high lineament density rock aquifer.
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Confinement
Typical value:confined
Description Confined by glaciolacustrine clay or till, thickness from 1 m to 99 m (average of 22 m). (Note that the prime difference between aquifer 463 and 464 is that the confining layer for 463 is on average 7 m thicker than 64)
Source Aquifer Information Table - Aquifer 463 (Sand and gravel aquifer)
Surficial sediment thickness
Range: [20 to 200] m
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Well depth
44 m Range: [6 to 155] m
Source Aquifer Information Table - Aquifer 463 (Sand and gravel aquifer)
Groundwater depth
19 m Range: [ to 91] m
Description There are some artesian wells.
Source Aquifer Information Table - Aquifer 463 (Sand and gravel aquifer)
Surficial unit hydraulic conductivity
0.0022 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 37] mm/y
Source Regional-Scale Groundwater Flow Model of the Kelowna Area and the Mission Creek Watershed, Central Okanagan, BC
Hydrogeological unit yield
Description 8 l/s (range: 0.06 l/s to 63 l/s)
Source Aquifer Information Table - Aquifer 463 (Sand and gravel aquifer)
Hydrogeological unit potential
Typical value:medium
Source Aquifer Classification Database
Groundwater usage
Typical value:domestic
Description High demand for groundwater
Source Aquifer Classification Database
Aquifer vulnerability
Typical value:low
Source Aquifer Classification Database
Groundwater Quality
Typical value:saline
Source Aquifer Classification Database