Groundwater—Surface Water Interactions in a Mountain-to-Coast Watershed: Effects of Climate Change and Human Stressors

Table 3

Saturated zone initial hydraulic properties.

HSU^1	Material	Unit type	Horizontal extent (km^2)	Initial (m/s)	Initial (m/s)	Specific yield	Specific storage (m^−1)
178	Sand and gravel	Surficial confined	19.0	6.37E-04	6.37E-05	0.2	9.33E-05
179	Gravel and sand	Surficial unconfined	7.6	1.00E-03	1.00E-04	0.2	2.00E-01
180	Sand and gravel	Surficial confined	8.4	7.06E-06	7.06E-07	0.2	1.00E-04
182	Shale	Bedrock	31.6	1.97E-06	1.97E-07	0.2	1.40E-03
183	Sand and gravel	Surficial confined	6.3	1.00E-03	1.00E-04	0.2	5.00E-04
185	Sand and gravel	Surficial confined	14.9	1.00E-03	1.00E-04	0.2	5.00E-04
186	Sand and gravel	Surficial unconfined	17.0	2.27E-02	2.27E-03	0.2	7.10E-04
189	Gravel and sand	Surficial unconfined	10.5	8.68E-04	8.68E-05	0.2	4.46E-03
190	Sand and gravel	Surficial unconfined	1.9	1.39E-04	1.39E-05	0.2	3.89E-04
191	Sand and gravel	Surficial unconfined	3.2	1.00E-03	1.00E-04	0.2	2.00E-01
Alluvial	Alluvium	Unmapped aquifer	287.0	1.00E-05	1.00E-06	0.3	1.00E-04
Bedrock	Bedrock	Base unit	980.0	1.00E-07	1.00E-08	0.05	1.00E-06
Aquitard	Clay Till	Confining unit	46.2	3.17E-10	3.17E-11	0.02	1.00E-03

HGUs numbered using the BC Aquifer Classification System numbering.
Values in bold represent the geometric mean from pumping test data [44].