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

Table 2

van Genuchten parameters for unsaturated zone materials.

Model classification (drainage ability)	Residual saturation ()	Saturated moisture content ()	(cm^−1)		(cm/d)	Bulk^1 density (kg/m^3)	Texture class
(1) V. poor	0.1	0.38	0.027	1.23	2.88	1280	Sandy clay
(2) Poor to v. poor	0.095	0.41	0.019	1.31	6.24	1280	Clay loam
(3) Imperfect	0.034	0.46	0.016	1.37	6	1280	Silt
(4) Mod. well to imperfect	0.067	0.45	0.02	1.41	10.8	1280	Silt loam
(5) Mod. well	0.078	0.43	0.036	1.56	24.96	1360	Loam
(6) Well to mod. well	0.1	0.39	0.059	1.48	31.44	1280	Sandy clay loam
(7) Well	0.065	0.41	0.075	1.89	106.08	1440	Sandy loam
(8) Rapid to well	0.045	0.43	0.145	2.68	712.8	1520	Sand
(9) Rapid	0.045	0.43	0.145	2.68	712.8	1520	Sand
Alluvial^2	0.034	0.46	0.016	1.37	6	1280	—
Bedrock^2	0.068	0.38	0.008	1.09	4.8	2400	—

Bulk density from Linsley et al. [43], ²initial estimates.