Salinity Distribution within the County of Lethbridge

 
 
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 The County has 726 saline seeps which occupy a total of 6 238 ha (15 415 ac). The visibly saline areas have such high salinity levels that annual crops cannot be grown and forage crops have significantly reduced yields. Often the lands surrounding the visibly saline areas are also weakly saline, resulting in reduced yields especially for salt-sensitive crops.
.
Salinity Type
Number
of Seeps
Area (ha)
Percent (%)
of Total Saline Area
Contact/slope change salinity
245
2 698.61
43.3
Outcrop salinity
13
27.45
0.4
Depression bottom
41
704.28
11.3
Coulee bottom salinity
7
32.98
0.5
Slough ring salinity
7
154.55
2.5
Irrigation canal seepage salinity
162
1 655.74
26.5
Natural/irrigation salinity
251
964.52
15.5
Total
726
6 238.13
100.00

Contact/slope change salinity is the most common type (43.3% of the total saline area), followed by irrigation canal seepage salinity (26.5%), natural/irrigation salinity (15.5%), depression bottom salinity (11.3%), slough ring salinity (2.5%), coulee bottom salinity (0.5%), and outcrop salinity (0.4%).

Total saline area by type

Please refer to Salinity Classification, Mapping and Management in Alberta for more information.

 
 
 
 
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For more information about the content of this document, contact Karen Raven.
This document is maintained by Laura Thygesen.
This information published to the web on February 12, 2004.
Last Reviewed/Revised on November 17, 2015.