Ground-Water Flow Model for the Spokane Valley-Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho

Scientific Investigations Report 2007–5044

U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5044

Table 3. Average volumetric rate of recharge and average recharge flux from precipitation, Spokane Valley-Rathdrum Prairie aquifer, Washington and Idaho, October 1990 through September 2005.

[Volumetric rate of recharge: PS, recharge from precipitation on permeable surface; IS, Recharge from precipitation runoff from impermeable surface to recharge well, infiltration basin, or adjacent permeable surface; Abbreviations: ft³/s, cubic foot per second; mi², square mile; in/yr, inch per year; ft/d, foot per day]

Region	Volumetric rate of recharge (ft³/s)			Surface area (mi²)	Recharge flux
Region	PS	IS	Total	Surface area (mi²)	(in/yr)	(ft/d)
Idaho side	133	22	155	211	10.0	0.0023
Washington side	43	30	73	115	8.6	.0020
Entire model	176	52	228	326	9.5	.0022

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