Temporal and Spatial Variability of Water Surplus in Ontario, Canada

Table 3

Number of years that measured precipitation (𝑃) and DRAINMOD estimated deep drainage (DD) and runoff (RO) exceeded the specified limits at 12 Ontario sites for the local and sandy (Pontypool sand) soil types for the 1954 to 2001 (48 years) period.

Site	Deep drainage				Runoff				Precipitation
	Local soil		Pontypool; sand		Local soil		Pontypool sand
	300 mm	400 mm	300 mm	400 mm	150 mm	200 mm	150 mm	200 mm	<800 mm	>1000 mm
Emo	2	1	4	2	0	0	0	0	37	1
Guelph	15	8	17	11	1	0	1	0	14	8
Harrow	0	0	1	0	11	4	1	0	14	11
Kapuskasing	0	0	37	25	44	35	0	0	17	5
London	0	0	21	11	23	14	2	0	5	16
Mount Forest	25	8	38	23	5	3	0	0	4	19
Ottawa	0	0	19	6	39	24	2	2	15	7
Peterborough	0	0	8	2	10	4	3	1	29	3
Renfrew	0	0	5	1	41	29	6	2	21	2
Smithfield	26	13	26	13	0	0	0	0	4	14
Vineland	0	0	2	1	7	3	1	0	21	6
Wiarton	0	0	33	12	25	15	0	0	2	23